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django/tests/model_formsets/tests.py

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import datetime
import re
from datetime import date
from decimal import Decimal
from django import forms
from django.core.exceptions import ImproperlyConfigured
from django.db import models
from django.forms.formsets import formset_factory
from django.forms.models import (
BaseModelFormSet,
ModelForm,
_get_foreign_key,
inlineformset_factory,
modelformset_factory,
)
from django.forms.renderers import DjangoTemplates
from django.http import QueryDict
from django.test import TestCase, skipUnlessDBFeature
from .models import (
AlternateBook,
Author,
AuthorMeeting,
BetterAuthor,
Book,
BookWithCustomPK,
BookWithOptionalAltEditor,
ClassyMexicanRestaurant,
CustomPrimaryKey,
Location,
Membership,
MexicanRestaurant,
Owner,
OwnerProfile,
Person,
Place,
Player,
Poem,
Poet,
Post,
Price,
Product,
Repository,
Restaurant,
Revision,
Team,
)
class DeletionTests(TestCase):
def test_deletion(self):
PoetFormSet = modelformset_factory(Poet, fields="__all__", can_delete=True)
poet = Poet.objects.create(name="test")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(poet.pk),
"form-0-name": "test",
"form-0-DELETE": "on",
}
formset = PoetFormSet(data, queryset=Poet.objects.all())
formset.save(commit=False)
self.assertEqual(Poet.objects.count(), 1)
formset.save()
self.assertTrue(formset.is_valid())
self.assertEqual(Poet.objects.count(), 0)
def test_add_form_deletion_when_invalid(self):
"""
Make sure that an add form that is filled out, but marked for deletion
doesn't cause validation errors.
"""
PoetFormSet = modelformset_factory(Poet, fields="__all__", can_delete=True)
poet = Poet.objects.create(name="test")
# One existing untouched and two new unvalid forms
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(poet.id),
"form-0-name": "test",
"form-1-id": "",
"form-1-name": "x" * 1000, # Too long
"form-2-id": str(poet.id), # Violate unique constraint
"form-2-name": "test2",
}
formset = PoetFormSet(data, queryset=Poet.objects.all())
# Make sure this form doesn't pass validation.
self.assertIs(formset.is_valid(), False)
self.assertEqual(Poet.objects.count(), 1)
# Then make sure that it *does* pass validation and delete the object,
# even though the data in new forms aren't actually valid.
data["form-0-DELETE"] = "on"
data["form-1-DELETE"] = "on"
data["form-2-DELETE"] = "on"
formset = PoetFormSet(data, queryset=Poet.objects.all())
self.assertIs(formset.is_valid(), True)
formset.save()
self.assertEqual(Poet.objects.count(), 0)
def test_change_form_deletion_when_invalid(self):
"""
Make sure that a change form that is filled out, but marked for deletion
doesn't cause validation errors.
"""
PoetFormSet = modelformset_factory(Poet, fields="__all__", can_delete=True)
poet = Poet.objects.create(name="test")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(poet.id),
"form-0-name": "x" * 1000,
}
formset = PoetFormSet(data, queryset=Poet.objects.all())
# Make sure this form doesn't pass validation.
self.assertIs(formset.is_valid(), False)
self.assertEqual(Poet.objects.count(), 1)
# Then make sure that it *does* pass validation and delete the object,
# even though the data isn't actually valid.
data["form-0-DELETE"] = "on"
formset = PoetFormSet(data, queryset=Poet.objects.all())
self.assertIs(formset.is_valid(), True)
formset.save()
self.assertEqual(Poet.objects.count(), 0)
def test_outdated_deletion(self):
poet = Poet.objects.create(name="test")
poem = Poem.objects.create(name="Brevity is the soul of wit", poet=poet)
PoemFormSet = inlineformset_factory(
Poet, Poem, fields="__all__", can_delete=True
)
# Simulate deletion of an object that doesn't exist in the database
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "2",
"form-0-id": str(poem.pk),
"form-0-name": "foo",
"form-1-id": str(poem.pk + 1), # doesn't exist
"form-1-name": "bar",
"form-1-DELETE": "on",
}
formset = PoemFormSet(data, instance=poet, prefix="form")
# The formset is valid even though poem.pk + 1 doesn't exist,
# because it's marked for deletion anyway
self.assertTrue(formset.is_valid())
formset.save()
# Make sure the save went through correctly
self.assertEqual(Poem.objects.get(pk=poem.pk).name, "foo")
self.assertEqual(poet.poem_set.count(), 1)
self.assertFalse(Poem.objects.filter(pk=poem.pk + 1).exists())
class ModelFormsetTest(TestCase):
def test_modelformset_factory_without_fields(self):
"""Regression for #19733"""
message = (
"Calling modelformset_factory without defining 'fields' or 'exclude' "
"explicitly is prohibited."
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
modelformset_factory(Author)
def test_simple_save(self):
qs = Author.objects.all()
AuthorFormSet = modelformset_factory(Author, fields="__all__", extra=3)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 3)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_form-0-name">Name:</label>'
'<input id="id_form-0-name" type="text" name="form-0-name" maxlength="100">'
'<input type="hidden" name="form-0-id" id="id_form-0-id"></p>',
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_form-1-name">Name:</label>'
'<input id="id_form-1-name" type="text" name="form-1-name" maxlength="100">'
'<input type="hidden" name="form-1-id" id="id_form-1-id"></p>',
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_form-2-name">Name:</label>'
'<input id="id_form-2-name" type="text" name="form-2-name" maxlength="100">'
'<input type="hidden" name="form-2-id" id="id_form-2-id"></p>',
)
data = {
"form-TOTAL_FORMS": "3", # the number of forms rendered
"form-INITIAL_FORMS": "0", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-name": "Charles Baudelaire",
"form-1-name": "Arthur Rimbaud",
"form-2-name": "",
}
formset = AuthorFormSet(data=data, queryset=qs)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 2)
author1, author2 = saved
self.assertEqual(author1, Author.objects.get(name="Charles Baudelaire"))
self.assertEqual(author2, Author.objects.get(name="Arthur Rimbaud"))
authors = list(Author.objects.order_by("name"))
self.assertEqual(authors, [author2, author1])
# Gah! We forgot Paul Verlaine. Let's create a formset to edit the
# existing authors with an extra form to add him. We *could* pass in a
# queryset to restrict the Author objects we edit, but in this case
# we'll use it to display them in alphabetical order by name.
qs = Author.objects.order_by("name")
AuthorFormSet = modelformset_factory(
Author, fields="__all__", extra=1, can_delete=False
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 3)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_form-0-name">Name:</label>'
'<input id="id_form-0-name" type="text" name="form-0-name" '
'value="Arthur Rimbaud" maxlength="100">'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id"></p>'
% author2.id,
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_form-1-name">Name:</label>'
'<input id="id_form-1-name" type="text" name="form-1-name" '
'value="Charles Baudelaire" maxlength="100">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id"></p>'
% author1.id,
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_form-2-name">Name:</label>'
'<input id="id_form-2-name" type="text" name="form-2-name" maxlength="100">'
'<input type="hidden" name="form-2-id" id="id_form-2-id"></p>',
)
data = {
"form-TOTAL_FORMS": "3", # the number of forms rendered
"form-INITIAL_FORMS": "2", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-id": str(author2.id),
"form-0-name": "Arthur Rimbaud",
"form-1-id": str(author1.id),
"form-1-name": "Charles Baudelaire",
"form-2-name": "Paul Verlaine",
}
formset = AuthorFormSet(data=data, queryset=qs)
self.assertTrue(formset.is_valid())
# Only changed or new objects are returned from formset.save()
saved = formset.save()
self.assertEqual(len(saved), 1)
author3 = saved[0]
self.assertEqual(author3, Author.objects.get(name="Paul Verlaine"))
authors = list(Author.objects.order_by("name"))
self.assertEqual(authors, [author2, author1, author3])
# This probably shouldn't happen, but it will. If an add form was
# marked for deletion, make sure we don't save that form.
qs = Author.objects.order_by("name")
AuthorFormSet = modelformset_factory(
Author, fields="__all__", extra=1, can_delete=True
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 4)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_form-0-name">Name:</label>'
'<input id="id_form-0-name" type="text" name="form-0-name" '
'value="Arthur Rimbaud" maxlength="100"></p>'
'<p><label for="id_form-0-DELETE">Delete:</label>'
'<input type="checkbox" name="form-0-DELETE" id="id_form-0-DELETE">'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id"></p>'
% author2.id,
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_form-1-name">Name:</label>'
'<input id="id_form-1-name" type="text" name="form-1-name" '
'value="Charles Baudelaire" maxlength="100"></p>'
'<p><label for="id_form-1-DELETE">Delete:</label>'
'<input type="checkbox" name="form-1-DELETE" id="id_form-1-DELETE">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id"></p>'
% author1.id,
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_form-2-name">Name:</label>'
'<input id="id_form-2-name" type="text" name="form-2-name" '
'value="Paul Verlaine" maxlength="100"></p>'
'<p><label for="id_form-2-DELETE">Delete:</label>'
'<input type="checkbox" name="form-2-DELETE" id="id_form-2-DELETE">'
'<input type="hidden" name="form-2-id" value="%d" id="id_form-2-id"></p>'
% author3.id,
)
self.assertHTMLEqual(
formset.forms[3].as_p(),
'<p><label for="id_form-3-name">Name:</label>'
'<input id="id_form-3-name" type="text" name="form-3-name" maxlength="100">'
'</p><p><label for="id_form-3-DELETE">Delete:</label>'
'<input type="checkbox" name="form-3-DELETE" id="id_form-3-DELETE">'
'<input type="hidden" name="form-3-id" id="id_form-3-id"></p>',
)
data = {
"form-TOTAL_FORMS": "4", # the number of forms rendered
"form-INITIAL_FORMS": "3", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-id": str(author2.id),
"form-0-name": "Arthur Rimbaud",
"form-1-id": str(author1.id),
"form-1-name": "Charles Baudelaire",
"form-2-id": str(author3.id),
"form-2-name": "Paul Verlaine",
"form-3-name": "Walt Whitman",
"form-3-DELETE": "on",
}
formset = AuthorFormSet(data=data, queryset=qs)
self.assertTrue(formset.is_valid())
# No objects were changed or saved so nothing will come back.
self.assertEqual(formset.save(), [])
authors = list(Author.objects.order_by("name"))
self.assertEqual(authors, [author2, author1, author3])
# Let's edit a record to ensure save only returns that one record.
data = {
"form-TOTAL_FORMS": "4", # the number of forms rendered
"form-INITIAL_FORMS": "3", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-id": str(author2.id),
"form-0-name": "Walt Whitman",
"form-1-id": str(author1.id),
"form-1-name": "Charles Baudelaire",
"form-2-id": str(author3.id),
"form-2-name": "Paul Verlaine",
"form-3-name": "",
"form-3-DELETE": "",
}
formset = AuthorFormSet(data=data, queryset=qs)
self.assertTrue(formset.is_valid())
# One record has changed.
saved = formset.save()
self.assertEqual(len(saved), 1)
self.assertEqual(saved[0], Author.objects.get(name="Walt Whitman"))
def test_commit_false(self):
# Test the behavior of commit=False and save_m2m
author1 = Author.objects.create(name="Charles Baudelaire")
author2 = Author.objects.create(name="Paul Verlaine")
author3 = Author.objects.create(name="Walt Whitman")
meeting = AuthorMeeting.objects.create(created=date.today())
meeting.authors.set(Author.objects.all())
# create an Author instance to add to the meeting.
author4 = Author.objects.create(name="John Steinbeck")
AuthorMeetingFormSet = modelformset_factory(
AuthorMeeting, fields="__all__", extra=1, can_delete=True
)
data = {
"form-TOTAL_FORMS": "2", # the number of forms rendered
"form-INITIAL_FORMS": "1", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-id": str(meeting.id),
"form-0-name": "2nd Tuesday of the Week Meeting",
"form-0-authors": [author2.id, author1.id, author3.id, author4.id],
"form-1-name": "",
"form-1-authors": "",
"form-1-DELETE": "",
}
formset = AuthorMeetingFormSet(data=data, queryset=AuthorMeeting.objects.all())
self.assertTrue(formset.is_valid())
instances = formset.save(commit=False)
for instance in instances:
instance.created = date.today()
instance.save()
formset.save_m2m()
self.assertSequenceEqual(
instances[0].authors.all(),
[author1, author4, author2, author3],
)
def test_max_num(self):
# Test the behavior of max_num with model formsets. It should allow
# all existing related objects/inlines for a given object to be
# displayed, but not allow the creation of new inlines beyond max_num.
a1 = Author.objects.create(name="Charles Baudelaire")
a2 = Author.objects.create(name="Paul Verlaine")
a3 = Author.objects.create(name="Walt Whitman")
qs = Author.objects.order_by("name")
AuthorFormSet = modelformset_factory(
Author, fields="__all__", max_num=None, extra=3
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 6)
self.assertEqual(len(formset.extra_forms), 3)
AuthorFormSet = modelformset_factory(
Author, fields="__all__", max_num=4, extra=3
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 4)
self.assertEqual(len(formset.extra_forms), 1)
AuthorFormSet = modelformset_factory(
Author, fields="__all__", max_num=0, extra=3
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 3)
self.assertEqual(len(formset.extra_forms), 0)
AuthorFormSet = modelformset_factory(Author, fields="__all__", max_num=None)
formset = AuthorFormSet(queryset=qs)
self.assertSequenceEqual(formset.get_queryset(), [a1, a2, a3])
AuthorFormSet = modelformset_factory(Author, fields="__all__", max_num=0)
formset = AuthorFormSet(queryset=qs)
self.assertSequenceEqual(formset.get_queryset(), [a1, a2, a3])
AuthorFormSet = modelformset_factory(Author, fields="__all__", max_num=4)
formset = AuthorFormSet(queryset=qs)
self.assertSequenceEqual(formset.get_queryset(), [a1, a2, a3])
def test_min_num(self):
# Test the behavior of min_num with model formsets. It should be
# added to extra.
qs = Author.objects.none()
AuthorFormSet = modelformset_factory(Author, fields="__all__", extra=0)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 0)
AuthorFormSet = modelformset_factory(
Author, fields="__all__", min_num=1, extra=0
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 1)
AuthorFormSet = modelformset_factory(
Author, fields="__all__", min_num=1, extra=1
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 2)
def test_min_num_with_existing(self):
# Test the behavior of min_num with existing objects.
Author.objects.create(name="Charles Baudelaire")
qs = Author.objects.all()
AuthorFormSet = modelformset_factory(
Author, fields="__all__", extra=0, min_num=1
)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 1)
def test_custom_save_method(self):
class PoetForm(forms.ModelForm):
def save(self, commit=True):
# change the name to "Vladimir Mayakovsky" just to be a jerk.
author = super().save(commit=False)
author.name = "Vladimir Mayakovsky"
if commit:
author.save()
return author
PoetFormSet = modelformset_factory(Poet, fields="__all__", form=PoetForm)
data = {
"form-TOTAL_FORMS": "3", # the number of forms rendered
"form-INITIAL_FORMS": "0", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-name": "Walt Whitman",
"form-1-name": "Charles Baudelaire",
"form-2-name": "",
}
qs = Poet.objects.all()
formset = PoetFormSet(data=data, queryset=qs)
self.assertTrue(formset.is_valid())
poets = formset.save()
self.assertEqual(len(poets), 2)
poet1, poet2 = poets
self.assertEqual(poet1.name, "Vladimir Mayakovsky")
self.assertEqual(poet2.name, "Vladimir Mayakovsky")
def test_custom_form(self):
"""
model_formset_factory() respects fields and exclude parameters of a
custom form.
"""
class PostForm1(forms.ModelForm):
class Meta:
model = Post
fields = ("title", "posted")
class PostForm2(forms.ModelForm):
class Meta:
model = Post
exclude = ("subtitle",)
PostFormSet = modelformset_factory(Post, form=PostForm1)
formset = PostFormSet()
self.assertNotIn("subtitle", formset.forms[0].fields)
PostFormSet = modelformset_factory(Post, form=PostForm2)
formset = PostFormSet()
self.assertNotIn("subtitle", formset.forms[0].fields)
def test_custom_queryset_init(self):
"""
A queryset can be overridden in the formset's __init__() method.
"""
Author.objects.create(name="Charles Baudelaire")
Author.objects.create(name="Paul Verlaine")
class BaseAuthorFormSet(BaseModelFormSet):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.queryset = Author.objects.filter(name__startswith="Charles")
AuthorFormSet = modelformset_factory(
Author, fields="__all__", formset=BaseAuthorFormSet
)
formset = AuthorFormSet()
self.assertEqual(len(formset.get_queryset()), 1)
def test_model_inheritance(self):
BetterAuthorFormSet = modelformset_factory(BetterAuthor, fields="__all__")
formset = BetterAuthorFormSet()
self.assertEqual(len(formset.forms), 1)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_form-0-name">Name:</label>'
'<input id="id_form-0-name" type="text" name="form-0-name" maxlength="100">'
'</p><p><label for="id_form-0-write_speed">Write speed:</label>'
'<input type="number" name="form-0-write_speed" id="id_form-0-write_speed">'
'<input type="hidden" name="form-0-author_ptr" id="id_form-0-author_ptr">'
"</p>",
)
data = {
"form-TOTAL_FORMS": "1", # the number of forms rendered
"form-INITIAL_FORMS": "0", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-author_ptr": "",
"form-0-name": "Ernest Hemingway",
"form-0-write_speed": "10",
}
formset = BetterAuthorFormSet(data)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(author1,) = saved
self.assertEqual(author1, BetterAuthor.objects.get(name="Ernest Hemingway"))
hemingway_id = BetterAuthor.objects.get(name="Ernest Hemingway").pk
formset = BetterAuthorFormSet()
self.assertEqual(len(formset.forms), 2)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_form-0-name">Name:</label>'
'<input id="id_form-0-name" type="text" name="form-0-name" '
'value="Ernest Hemingway" maxlength="100"></p>'
'<p><label for="id_form-0-write_speed">Write speed:</label>'
'<input type="number" name="form-0-write_speed" value="10" '
'id="id_form-0-write_speed">'
'<input type="hidden" name="form-0-author_ptr" value="%d" '
'id="id_form-0-author_ptr"></p>' % hemingway_id,
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_form-1-name">Name:</label>'
'<input id="id_form-1-name" type="text" name="form-1-name" maxlength="100">'
'</p><p><label for="id_form-1-write_speed">Write speed:</label>'
'<input type="number" name="form-1-write_speed" id="id_form-1-write_speed">'
'<input type="hidden" name="form-1-author_ptr" id="id_form-1-author_ptr">'
"</p>",
)
data = {
"form-TOTAL_FORMS": "2", # the number of forms rendered
"form-INITIAL_FORMS": "1", # the number of forms with initial data
"form-MAX_NUM_FORMS": "", # the max number of forms
"form-0-author_ptr": hemingway_id,
"form-0-name": "Ernest Hemingway",
"form-0-write_speed": "10",
"form-1-author_ptr": "",
"form-1-name": "",
"form-1-write_speed": "",
}
formset = BetterAuthorFormSet(data)
self.assertTrue(formset.is_valid())
self.assertEqual(formset.save(), [])
def test_inline_formsets(self):
# We can also create a formset that is tied to a parent model. This is
# how the admin system's edit inline functionality works.
AuthorBooksFormSet = inlineformset_factory(
Author, Book, can_delete=False, extra=3, fields="__all__"
)
author = Author.objects.create(name="Charles Baudelaire")
formset = AuthorBooksFormSet(instance=author)
self.assertEqual(len(formset.forms), 3)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_book_set-0-title">Title:</label>'
'<input id="id_book_set-0-title" type="text" name="book_set-0-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-0-author" value="%d" '
'id="id_book_set-0-author">'
'<input type="hidden" name="book_set-0-id" id="id_book_set-0-id">'
"</p>" % author.id,
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_book_set-1-title">Title:</label>'
'<input id="id_book_set-1-title" type="text" name="book_set-1-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-1-author" value="%d" '
'id="id_book_set-1-author">'
'<input type="hidden" name="book_set-1-id" id="id_book_set-1-id"></p>'
% author.id,
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_book_set-2-title">Title:</label>'
'<input id="id_book_set-2-title" type="text" name="book_set-2-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-2-author" value="%d" '
'id="id_book_set-2-author">'
'<input type="hidden" name="book_set-2-id" id="id_book_set-2-id"></p>'
% author.id,
)
data = {
"book_set-TOTAL_FORMS": "3", # the number of forms rendered
"book_set-INITIAL_FORMS": "0", # the number of forms with initial data
"book_set-MAX_NUM_FORMS": "", # the max number of forms
"book_set-0-title": "Les Fleurs du Mal",
"book_set-1-title": "",
"book_set-2-title": "",
}
formset = AuthorBooksFormSet(data, instance=author)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(book1,) = saved
self.assertEqual(book1, Book.objects.get(title="Les Fleurs du Mal"))
self.assertSequenceEqual(author.book_set.all(), [book1])
# Now that we've added a book to Charles Baudelaire, let's try adding
# another one. This time though, an edit form will be available for
# every existing book.
AuthorBooksFormSet = inlineformset_factory(
Author, Book, can_delete=False, extra=2, fields="__all__"
)
author = Author.objects.get(name="Charles Baudelaire")
formset = AuthorBooksFormSet(instance=author)
self.assertEqual(len(formset.forms), 3)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_book_set-0-title">Title:</label>'
'<input id="id_book_set-0-title" type="text" name="book_set-0-title" '
'value="Les Fleurs du Mal" maxlength="100">'
'<input type="hidden" name="book_set-0-author" value="%d" '
'id="id_book_set-0-author">'
'<input type="hidden" name="book_set-0-id" value="%d" '
'id="id_book_set-0-id"></p>'
% (
author.id,
book1.id,
),
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_book_set-1-title">Title:</label>'
'<input id="id_book_set-1-title" type="text" name="book_set-1-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-1-author" value="%d" '
'id="id_book_set-1-author">'
'<input type="hidden" name="book_set-1-id" id="id_book_set-1-id"></p>'
% author.id,
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_book_set-2-title">Title:</label>'
'<input id="id_book_set-2-title" type="text" name="book_set-2-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-2-author" value="%d" '
'id="id_book_set-2-author">'
'<input type="hidden" name="book_set-2-id" id="id_book_set-2-id"></p>'
% author.id,
)
data = {
"book_set-TOTAL_FORMS": "3", # the number of forms rendered
"book_set-INITIAL_FORMS": "1", # the number of forms with initial data
"book_set-MAX_NUM_FORMS": "", # the max number of forms
"book_set-0-id": str(book1.id),
"book_set-0-title": "Les Fleurs du Mal",
"book_set-1-title": "Les Paradis Artificiels",
"book_set-2-title": "",
}
formset = AuthorBooksFormSet(data, instance=author)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(book2,) = saved
self.assertEqual(book2, Book.objects.get(title="Les Paradis Artificiels"))
# As you can see, 'Les Paradis Artificiels' is now a book belonging to
# Charles Baudelaire.
self.assertSequenceEqual(author.book_set.order_by("title"), [book1, book2])
def test_inline_formsets_save_as_new(self):
# The save_as_new parameter lets you re-associate the data to a new
# instance. This is used in the admin for save_as functionality.
AuthorBooksFormSet = inlineformset_factory(
Author, Book, can_delete=False, extra=2, fields="__all__"
)
Author.objects.create(name="Charles Baudelaire")
# An immutable QueryDict simulates request.POST.
data = QueryDict(mutable=True)
data.update(
{
"book_set-TOTAL_FORMS": "3", # the number of forms rendered
"book_set-INITIAL_FORMS": "2", # the number of forms with initial data
"book_set-MAX_NUM_FORMS": "", # the max number of forms
"book_set-0-id": "1",
"book_set-0-title": "Les Fleurs du Mal",
"book_set-1-id": "2",
"book_set-1-title": "Les Paradis Artificiels",
"book_set-2-title": "",
}
)
data._mutable = False
formset = AuthorBooksFormSet(data, instance=Author(), save_as_new=True)
self.assertTrue(formset.is_valid())
self.assertIs(data._mutable, False)
new_author = Author.objects.create(name="Charles Baudelaire")
formset = AuthorBooksFormSet(data, instance=new_author, save_as_new=True)
saved = formset.save()
self.assertEqual(len(saved), 2)
book1, book2 = saved
self.assertEqual(book1.title, "Les Fleurs du Mal")
self.assertEqual(book2.title, "Les Paradis Artificiels")
# Test using a custom prefix on an inline formset.
formset = AuthorBooksFormSet(prefix="test")
self.assertEqual(len(formset.forms), 2)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_test-0-title">Title:</label>'
'<input id="id_test-0-title" type="text" name="test-0-title" '
'maxlength="100">'
'<input type="hidden" name="test-0-author" id="id_test-0-author">'
'<input type="hidden" name="test-0-id" id="id_test-0-id"></p>',
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_test-1-title">Title:</label>'
'<input id="id_test-1-title" type="text" name="test-1-title" '
'maxlength="100">'
'<input type="hidden" name="test-1-author" id="id_test-1-author">'
'<input type="hidden" name="test-1-id" id="id_test-1-id"></p>',
)
def test_inline_formsets_with_custom_pk(self):
# Test inline formsets where the inline-edited object has a custom
# primary key that is not the fk to the parent object.
self.maxDiff = 1024
AuthorBooksFormSet2 = inlineformset_factory(
Author, BookWithCustomPK, can_delete=False, extra=1, fields="__all__"
)
author = Author.objects.create(pk=1, name="Charles Baudelaire")
formset = AuthorBooksFormSet2(instance=author)
self.assertEqual(len(formset.forms), 1)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_bookwithcustompk_set-0-my_pk">My pk:</label>'
'<input id="id_bookwithcustompk_set-0-my_pk" type="number" '
'name="bookwithcustompk_set-0-my_pk" step="1"></p>'
'<p><label for="id_bookwithcustompk_set-0-title">Title:</label>'
'<input id="id_bookwithcustompk_set-0-title" type="text" '
'name="bookwithcustompk_set-0-title" maxlength="100">'
'<input type="hidden" name="bookwithcustompk_set-0-author" '
'value="1" id="id_bookwithcustompk_set-0-author"></p>',
)
data = {
# The number of forms rendered.
"bookwithcustompk_set-TOTAL_FORMS": "1",
# The number of forms with initial data.
"bookwithcustompk_set-INITIAL_FORMS": "0",
# The max number of forms.
"bookwithcustompk_set-MAX_NUM_FORMS": "",
"bookwithcustompk_set-0-my_pk": "77777",
"bookwithcustompk_set-0-title": "Les Fleurs du Mal",
}
formset = AuthorBooksFormSet2(data, instance=author)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(book1,) = saved
self.assertEqual(book1.pk, 77777)
book1 = author.bookwithcustompk_set.get()
self.assertEqual(book1.title, "Les Fleurs du Mal")
def test_inline_formsets_with_multi_table_inheritance(self):
# Test inline formsets where the inline-edited object uses multi-table
# inheritance, thus has a non AutoField yet auto-created primary key.
AuthorBooksFormSet3 = inlineformset_factory(
Author, AlternateBook, can_delete=False, extra=1, fields="__all__"
)
author = Author.objects.create(pk=1, name="Charles Baudelaire")
formset = AuthorBooksFormSet3(instance=author)
self.assertEqual(len(formset.forms), 1)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_alternatebook_set-0-title">Title:</label>'
'<input id="id_alternatebook_set-0-title" type="text" '
'name="alternatebook_set-0-title" maxlength="100"></p>'
'<p><label for="id_alternatebook_set-0-notes">Notes:</label>'
'<input id="id_alternatebook_set-0-notes" type="text" '
'name="alternatebook_set-0-notes" maxlength="100">'
'<input type="hidden" name="alternatebook_set-0-author" value="1" '
'id="id_alternatebook_set-0-author">'
'<input type="hidden" name="alternatebook_set-0-book_ptr" '
'id="id_alternatebook_set-0-book_ptr"></p>',
)
data = {
# The number of forms rendered.
"alternatebook_set-TOTAL_FORMS": "1",
# The number of forms with initial data.
"alternatebook_set-INITIAL_FORMS": "0",
# The max number of forms.
"alternatebook_set-MAX_NUM_FORMS": "",
"alternatebook_set-0-title": "Flowers of Evil",
"alternatebook_set-0-notes": "English translation of Les Fleurs du Mal",
}
formset = AuthorBooksFormSet3(data, instance=author)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(book1,) = saved
self.assertEqual(book1.title, "Flowers of Evil")
self.assertEqual(book1.notes, "English translation of Les Fleurs du Mal")
@skipUnlessDBFeature("supports_partially_nullable_unique_constraints")
def test_inline_formsets_with_nullable_unique_together(self):
# Test inline formsets where the inline-edited object has a
# unique_together constraint with a nullable member
AuthorBooksFormSet4 = inlineformset_factory(
Author,
BookWithOptionalAltEditor,
can_delete=False,
extra=2,
fields="__all__",
)
author = Author.objects.create(pk=1, name="Charles Baudelaire")
data = {
# The number of forms rendered.
"bookwithoptionalalteditor_set-TOTAL_FORMS": "2",
# The number of forms with initial data.
"bookwithoptionalalteditor_set-INITIAL_FORMS": "0",
# The max number of forms.
"bookwithoptionalalteditor_set-MAX_NUM_FORMS": "",
"bookwithoptionalalteditor_set-0-author": "1",
"bookwithoptionalalteditor_set-0-title": "Les Fleurs du Mal",
"bookwithoptionalalteditor_set-1-author": "1",
"bookwithoptionalalteditor_set-1-title": "Les Fleurs du Mal",
}
formset = AuthorBooksFormSet4(data, instance=author)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 2)
book1, book2 = saved
self.assertEqual(book1.author_id, 1)
self.assertEqual(book1.title, "Les Fleurs du Mal")
self.assertEqual(book2.author_id, 1)
self.assertEqual(book2.title, "Les Fleurs du Mal")
def test_inline_formsets_with_custom_save_method(self):
AuthorBooksFormSet = inlineformset_factory(
Author, Book, can_delete=False, extra=2, fields="__all__"
)
author = Author.objects.create(pk=1, name="Charles Baudelaire")
book1 = Book.objects.create(
pk=1, author=author, title="Les Paradis Artificiels"
)
book2 = Book.objects.create(pk=2, author=author, title="Les Fleurs du Mal")
book3 = Book.objects.create(pk=3, author=author, title="Flowers of Evil")
class PoemForm(forms.ModelForm):
def save(self, commit=True):
# change the name to "Brooklyn Bridge" just to be a jerk.
poem = super().save(commit=False)
poem.name = "Brooklyn Bridge"
if commit:
poem.save()
return poem
PoemFormSet = inlineformset_factory(Poet, Poem, form=PoemForm, fields="__all__")
data = {
"poem_set-TOTAL_FORMS": "3", # the number of forms rendered
"poem_set-INITIAL_FORMS": "0", # the number of forms with initial data
"poem_set-MAX_NUM_FORMS": "", # the max number of forms
"poem_set-0-name": "The Cloud in Trousers",
"poem_set-1-name": "I",
"poem_set-2-name": "",
}
poet = Poet.objects.create(name="Vladimir Mayakovsky")
formset = PoemFormSet(data=data, instance=poet)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 2)
poem1, poem2 = saved
self.assertEqual(poem1.name, "Brooklyn Bridge")
self.assertEqual(poem2.name, "Brooklyn Bridge")
# We can provide a custom queryset to our InlineFormSet:
custom_qs = Book.objects.order_by("-title")
formset = AuthorBooksFormSet(instance=author, queryset=custom_qs)
self.assertEqual(len(formset.forms), 5)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_book_set-0-title">Title:</label>'
'<input id="id_book_set-0-title" type="text" name="book_set-0-title" '
'value="Les Paradis Artificiels" maxlength="100">'
'<input type="hidden" name="book_set-0-author" value="1" '
'id="id_book_set-0-author">'
'<input type="hidden" name="book_set-0-id" value="1" id="id_book_set-0-id">'
"</p>",
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_book_set-1-title">Title:</label>'
'<input id="id_book_set-1-title" type="text" name="book_set-1-title" '
'value="Les Fleurs du Mal" maxlength="100">'
'<input type="hidden" name="book_set-1-author" value="1" '
'id="id_book_set-1-author">'
'<input type="hidden" name="book_set-1-id" value="2" id="id_book_set-1-id">'
"</p>",
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_book_set-2-title">Title:</label>'
'<input id="id_book_set-2-title" type="text" name="book_set-2-title" '
'value="Flowers of Evil" maxlength="100">'
'<input type="hidden" name="book_set-2-author" value="1" '
'id="id_book_set-2-author">'
'<input type="hidden" name="book_set-2-id" value="3" '
'id="id_book_set-2-id"></p>',
)
self.assertHTMLEqual(
formset.forms[3].as_p(),
'<p><label for="id_book_set-3-title">Title:</label>'
'<input id="id_book_set-3-title" type="text" name="book_set-3-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-3-author" value="1" '
'id="id_book_set-3-author">'
'<input type="hidden" name="book_set-3-id" id="id_book_set-3-id"></p>',
)
self.assertHTMLEqual(
formset.forms[4].as_p(),
'<p><label for="id_book_set-4-title">Title:</label>'
'<input id="id_book_set-4-title" type="text" name="book_set-4-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-4-author" value="1" '
'id="id_book_set-4-author">'
'<input type="hidden" name="book_set-4-id" id="id_book_set-4-id"></p>',
)
data = {
"book_set-TOTAL_FORMS": "5", # the number of forms rendered
"book_set-INITIAL_FORMS": "3", # the number of forms with initial data
"book_set-MAX_NUM_FORMS": "", # the max number of forms
"book_set-0-id": str(book1.id),
"book_set-0-title": "Les Paradis Artificiels",
"book_set-1-id": str(book2.id),
"book_set-1-title": "Les Fleurs du Mal",
"book_set-2-id": str(book3.id),
"book_set-2-title": "Flowers of Evil",
"book_set-3-title": "Revue des deux mondes",
"book_set-4-title": "",
}
formset = AuthorBooksFormSet(data, instance=author, queryset=custom_qs)
self.assertTrue(formset.is_valid())
custom_qs = Book.objects.filter(title__startswith="F")
formset = AuthorBooksFormSet(instance=author, queryset=custom_qs)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_book_set-0-title">Title:</label>'
'<input id="id_book_set-0-title" type="text" name="book_set-0-title" '
'value="Flowers of Evil" maxlength="100">'
'<input type="hidden" name="book_set-0-author" value="1" '
'id="id_book_set-0-author">'
'<input type="hidden" name="book_set-0-id" value="3" '
'id="id_book_set-0-id"></p>',
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_book_set-1-title">Title:</label>'
'<input id="id_book_set-1-title" type="text" name="book_set-1-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-1-author" value="1" '
'id="id_book_set-1-author">'
'<input type="hidden" name="book_set-1-id" id="id_book_set-1-id"></p>',
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_book_set-2-title">Title:</label>'
'<input id="id_book_set-2-title" type="text" name="book_set-2-title" '
'maxlength="100">'
'<input type="hidden" name="book_set-2-author" value="1" '
'id="id_book_set-2-author">'
'<input type="hidden" name="book_set-2-id" id="id_book_set-2-id"></p>',
)
data = {
"book_set-TOTAL_FORMS": "3", # the number of forms rendered
"book_set-INITIAL_FORMS": "1", # the number of forms with initial data
"book_set-MAX_NUM_FORMS": "", # the max number of forms
"book_set-0-id": str(book3.id),
"book_set-0-title": "Flowers of Evil",
"book_set-1-title": "Revue des deux mondes",
"book_set-2-title": "",
}
formset = AuthorBooksFormSet(data, instance=author, queryset=custom_qs)
self.assertTrue(formset.is_valid())
def test_inline_formsets_with_custom_save_method_related_instance(self):
"""
The ModelForm.save() method should be able to access the related object
if it exists in the database (#24395).
"""
class PoemForm2(forms.ModelForm):
def save(self, commit=True):
poem = super().save(commit=False)
poem.name = "%s by %s" % (poem.name, poem.poet.name)
if commit:
poem.save()
return poem
PoemFormSet = inlineformset_factory(
Poet, Poem, form=PoemForm2, fields="__all__"
)
data = {
"poem_set-TOTAL_FORMS": "1",
"poem_set-INITIAL_FORMS": "0",
"poem_set-MAX_NUM_FORMS": "",
"poem_set-0-name": "Le Lac",
}
poet = Poet()
formset = PoemFormSet(data=data, instance=poet)
self.assertTrue(formset.is_valid())
# The Poet instance is saved after the formset instantiation. This
# happens in admin's changeform_view() when adding a new object and
# some inlines in the same request.
poet.name = "Lamartine"
poet.save()
poem = formset.save()[0]
self.assertEqual(poem.name, "Le Lac by Lamartine")
def test_inline_formsets_with_wrong_fk_name(self):
"""Regression for #23451"""
message = "fk_name 'title' is not a ForeignKey to 'model_formsets.Author'."
with self.assertRaisesMessage(ValueError, message):
inlineformset_factory(Author, Book, fields="__all__", fk_name="title")
def test_custom_pk(self):
# We need to ensure that it is displayed
CustomPrimaryKeyFormSet = modelformset_factory(
CustomPrimaryKey, fields="__all__"
)
formset = CustomPrimaryKeyFormSet()
self.assertEqual(len(formset.forms), 1)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_form-0-my_pk">My pk:</label>'
'<input id="id_form-0-my_pk" type="text" name="form-0-my_pk" '
'maxlength="10"></p>'
'<p><label for="id_form-0-some_field">Some field:</label>'
'<input id="id_form-0-some_field" type="text" name="form-0-some_field" '
'maxlength="100"></p>',
)
# Custom primary keys with ForeignKey, OneToOneField and AutoField ############
place = Place.objects.create(pk=1, name="Giordanos", city="Chicago")
FormSet = inlineformset_factory(
Place, Owner, extra=2, can_delete=False, fields="__all__"
)
formset = FormSet(instance=place)
self.assertEqual(len(formset.forms), 2)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_owner_set-0-name">Name:</label>'
'<input id="id_owner_set-0-name" type="text" name="owner_set-0-name" '
'maxlength="100">'
'<input type="hidden" name="owner_set-0-place" value="1" '
'id="id_owner_set-0-place">'
'<input type="hidden" name="owner_set-0-auto_id" '
'id="id_owner_set-0-auto_id"></p>',
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_owner_set-1-name">Name:</label>'
'<input id="id_owner_set-1-name" type="text" name="owner_set-1-name" '
'maxlength="100">'
'<input type="hidden" name="owner_set-1-place" value="1" '
'id="id_owner_set-1-place">'
'<input type="hidden" name="owner_set-1-auto_id" '
'id="id_owner_set-1-auto_id"></p>',
)
data = {
"owner_set-TOTAL_FORMS": "2",
"owner_set-INITIAL_FORMS": "0",
"owner_set-MAX_NUM_FORMS": "",
"owner_set-0-auto_id": "",
"owner_set-0-name": "Joe Perry",
"owner_set-1-auto_id": "",
"owner_set-1-name": "",
}
formset = FormSet(data, instance=place)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(owner1,) = saved
self.assertEqual(owner1.name, "Joe Perry")
self.assertEqual(owner1.place.name, "Giordanos")
formset = FormSet(instance=place)
self.assertEqual(len(formset.forms), 3)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_owner_set-0-name">Name:</label>'
'<input id="id_owner_set-0-name" type="text" name="owner_set-0-name" '
'value="Joe Perry" maxlength="100">'
'<input type="hidden" name="owner_set-0-place" value="1" '
'id="id_owner_set-0-place">'
'<input type="hidden" name="owner_set-0-auto_id" value="%d" '
'id="id_owner_set-0-auto_id"></p>' % owner1.auto_id,
)
self.assertHTMLEqual(
formset.forms[1].as_p(),
'<p><label for="id_owner_set-1-name">Name:</label>'
'<input id="id_owner_set-1-name" type="text" name="owner_set-1-name" '
'maxlength="100">'
'<input type="hidden" name="owner_set-1-place" value="1" '
'id="id_owner_set-1-place">'
'<input type="hidden" name="owner_set-1-auto_id" '
'id="id_owner_set-1-auto_id"></p>',
)
self.assertHTMLEqual(
formset.forms[2].as_p(),
'<p><label for="id_owner_set-2-name">Name:</label>'
'<input id="id_owner_set-2-name" type="text" name="owner_set-2-name" '
'maxlength="100">'
'<input type="hidden" name="owner_set-2-place" value="1" '
'id="id_owner_set-2-place">'
'<input type="hidden" name="owner_set-2-auto_id" '
'id="id_owner_set-2-auto_id"></p>',
)
data = {
"owner_set-TOTAL_FORMS": "3",
"owner_set-INITIAL_FORMS": "1",
"owner_set-MAX_NUM_FORMS": "",
"owner_set-0-auto_id": str(owner1.auto_id),
"owner_set-0-name": "Joe Perry",
"owner_set-1-auto_id": "",
"owner_set-1-name": "Jack Berry",
"owner_set-2-auto_id": "",
"owner_set-2-name": "",
}
formset = FormSet(data, instance=place)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(owner2,) = saved
self.assertEqual(owner2.name, "Jack Berry")
self.assertEqual(owner2.place.name, "Giordanos")
# A custom primary key that is a ForeignKey or OneToOneField get
# rendered for the user to choose.
FormSet = modelformset_factory(OwnerProfile, fields="__all__")
formset = FormSet()
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_form-0-owner">Owner:</label>'
'<select name="form-0-owner" id="id_form-0-owner">'
'<option value="" selected>---------</option>'
'<option value="%d">Joe Perry at Giordanos</option>'
'<option value="%d">Jack Berry at Giordanos</option>'
"</select></p>"
'<p><label for="id_form-0-age">Age:</label>'
'<input type="number" name="form-0-age" id="id_form-0-age" min="0"></p>'
% (owner1.auto_id, owner2.auto_id),
)
owner1 = Owner.objects.get(name="Joe Perry")
FormSet = inlineformset_factory(
Owner, OwnerProfile, max_num=1, can_delete=False, fields="__all__"
)
self.assertEqual(FormSet.max_num, 1)
formset = FormSet(instance=owner1)
self.assertEqual(len(formset.forms), 1)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_ownerprofile-0-age">Age:</label>'
'<input type="number" name="ownerprofile-0-age" '
'id="id_ownerprofile-0-age" min="0">'
'<input type="hidden" name="ownerprofile-0-owner" value="%d" '
'id="id_ownerprofile-0-owner"></p>' % owner1.auto_id,
)
data = {
"ownerprofile-TOTAL_FORMS": "1",
"ownerprofile-INITIAL_FORMS": "0",
"ownerprofile-MAX_NUM_FORMS": "1",
"ownerprofile-0-owner": "",
"ownerprofile-0-age": "54",
}
formset = FormSet(data, instance=owner1)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(profile1,) = saved
self.assertEqual(profile1.owner, owner1)
self.assertEqual(profile1.age, 54)
formset = FormSet(instance=owner1)
self.assertEqual(len(formset.forms), 1)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_ownerprofile-0-age">Age:</label>'
'<input type="number" name="ownerprofile-0-age" value="54" '
'id="id_ownerprofile-0-age" min="0">'
'<input type="hidden" name="ownerprofile-0-owner" value="%d" '
'id="id_ownerprofile-0-owner"></p>' % owner1.auto_id,
)
data = {
"ownerprofile-TOTAL_FORMS": "1",
"ownerprofile-INITIAL_FORMS": "1",
"ownerprofile-MAX_NUM_FORMS": "1",
"ownerprofile-0-owner": str(owner1.auto_id),
"ownerprofile-0-age": "55",
}
formset = FormSet(data, instance=owner1)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(profile1,) = saved
self.assertEqual(profile1.owner, owner1)
self.assertEqual(profile1.age, 55)
def test_unique_true_enforces_max_num_one(self):
# ForeignKey with unique=True should enforce max_num=1
place = Place.objects.create(pk=1, name="Giordanos", city="Chicago")
FormSet = inlineformset_factory(
Place, Location, can_delete=False, fields="__all__"
)
self.assertEqual(FormSet.max_num, 1)
formset = FormSet(instance=place)
self.assertEqual(len(formset.forms), 1)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<p><label for="id_location_set-0-lat">Lat:</label>'
'<input id="id_location_set-0-lat" type="text" name="location_set-0-lat" '
'maxlength="100"></p>'
'<p><label for="id_location_set-0-lon">Lon:</label>'
'<input id="id_location_set-0-lon" type="text" name="location_set-0-lon" '
'maxlength="100">'
'<input type="hidden" name="location_set-0-place" value="1" '
'id="id_location_set-0-place">'
'<input type="hidden" name="location_set-0-id" '
'id="id_location_set-0-id"></p>',
)
def test_foreign_keys_in_parents(self):
self.assertEqual(type(_get_foreign_key(Restaurant, Owner)), models.ForeignKey)
self.assertEqual(
type(_get_foreign_key(MexicanRestaurant, Owner)), models.ForeignKey
)
def test_unique_validation(self):
FormSet = modelformset_factory(Product, fields="__all__", extra=1)
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-slug": "car-red",
}
formset = FormSet(data)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(product1,) = saved
self.assertEqual(product1.slug, "car-red")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-slug": "car-red",
}
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset.errors, [{"slug": ["Product with this Slug already exists."]}]
)
def test_modelformset_validate_max_flag(self):
# If validate_max is set and max_num is less than TOTAL_FORMS in the
# data, then throw an exception. MAX_NUM_FORMS in the data is
# irrelevant here (it's output as a hint for the client but its
# value in the returned data is not checked)
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "2", # should be ignored
"form-0-price": "12.00",
"form-0-quantity": "1",
"form-1-price": "24.00",
"form-1-quantity": "2",
}
FormSet = modelformset_factory(
Price, fields="__all__", extra=1, max_num=1, validate_max=True
)
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(formset.non_form_errors(), ["Please submit at most 1 form."])
# Now test the same thing without the validate_max flag to ensure
# default behavior is unchanged
FormSet = modelformset_factory(Price, fields="__all__", extra=1, max_num=1)
formset = FormSet(data)
self.assertTrue(formset.is_valid())
def test_modelformset_min_num_equals_max_num_less_than(self):
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "2",
"form-0-slug": "car-red",
"form-1-slug": "car-blue",
"form-2-slug": "car-black",
}
FormSet = modelformset_factory(
Product,
fields="__all__",
extra=1,
max_num=2,
validate_max=True,
min_num=2,
validate_min=True,
)
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(formset.non_form_errors(), ["Please submit at most 2 forms."])
def test_modelformset_min_num_equals_max_num_more_than(self):
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "2",
"form-0-slug": "car-red",
}
FormSet = modelformset_factory(
Product,
fields="__all__",
extra=1,
max_num=2,
validate_max=True,
min_num=2,
validate_min=True,
)
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(formset.non_form_errors(), ["Please submit at least 2 forms."])
def test_unique_together_validation(self):
FormSet = modelformset_factory(Price, fields="__all__", extra=1)
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-price": "12.00",
"form-0-quantity": "1",
}
formset = FormSet(data)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(price1,) = saved
self.assertEqual(price1.price, Decimal("12.00"))
self.assertEqual(price1.quantity, 1)
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-price": "12.00",
"form-0-quantity": "1",
}
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset.errors,
[{"__all__": ["Price with this Price and Quantity already exists."]}],
)
def test_unique_together_with_inlineformset_factory(self):
# Also see bug #8882.
repository = Repository.objects.create(name="Test Repo")
FormSet = inlineformset_factory(Repository, Revision, extra=1, fields="__all__")
data = {
"revision_set-TOTAL_FORMS": "1",
"revision_set-INITIAL_FORMS": "0",
"revision_set-MAX_NUM_FORMS": "",
"revision_set-0-repository": repository.pk,
"revision_set-0-revision": "146239817507f148d448db38840db7c3cbf47c76",
"revision_set-0-DELETE": "",
}
formset = FormSet(data, instance=repository)
self.assertTrue(formset.is_valid())
saved = formset.save()
self.assertEqual(len(saved), 1)
(revision1,) = saved
self.assertEqual(revision1.repository, repository)
self.assertEqual(revision1.revision, "146239817507f148d448db38840db7c3cbf47c76")
# attempt to save the same revision against the same repo.
data = {
"revision_set-TOTAL_FORMS": "1",
"revision_set-INITIAL_FORMS": "0",
"revision_set-MAX_NUM_FORMS": "",
"revision_set-0-repository": repository.pk,
"revision_set-0-revision": "146239817507f148d448db38840db7c3cbf47c76",
"revision_set-0-DELETE": "",
}
formset = FormSet(data, instance=repository)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset.errors,
[
{
"__all__": [
"Revision with this Repository and Revision already exists."
]
}
],
)
# unique_together with inlineformset_factory with overridden form fields
# Also see #9494
FormSet = inlineformset_factory(
Repository, Revision, fields=("revision",), extra=1
)
data = {
"revision_set-TOTAL_FORMS": "1",
"revision_set-INITIAL_FORMS": "0",
"revision_set-MAX_NUM_FORMS": "",
"revision_set-0-repository": repository.pk,
"revision_set-0-revision": "146239817507f148d448db38840db7c3cbf47c76",
"revision_set-0-DELETE": "",
}
formset = FormSet(data, instance=repository)
self.assertFalse(formset.is_valid())
def test_callable_defaults(self):
# Use of callable defaults (see bug #7975).
person = Person.objects.create(name="Ringo")
FormSet = inlineformset_factory(
Person, Membership, can_delete=False, extra=1, fields="__all__"
)
formset = FormSet(instance=person)
# Django will render a hidden field for model fields that have a callable
# default. This is required to ensure the value is tested for change correctly
# when determine what extra forms have changed to save.
self.assertEqual(len(formset.forms), 1) # this formset only has one form
form = formset.forms[0]
now = form.fields["date_joined"].initial()
result = form.as_p()
result = re.sub(
r"[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}(?:\.[0-9]+)?",
"__DATETIME__",
result,
)
self.assertHTMLEqual(
result,
'<p><label for="id_membership_set-0-date_joined">Date joined:</label>'
'<input type="text" name="membership_set-0-date_joined" '
'value="__DATETIME__" id="id_membership_set-0-date_joined">'
'<input type="hidden" name="initial-membership_set-0-date_joined" '
'value="__DATETIME__" '
'id="initial-membership_set-0-id_membership_set-0-date_joined"></p>'
'<p><label for="id_membership_set-0-karma">Karma:</label>'
'<input type="number" name="membership_set-0-karma" '
'id="id_membership_set-0-karma">'
'<input type="hidden" name="membership_set-0-person" value="%d" '
'id="id_membership_set-0-person">'
'<input type="hidden" name="membership_set-0-id" '
'id="id_membership_set-0-id"></p>' % person.id,
)
# test for validation with callable defaults. Validations rely on hidden fields
data = {
"membership_set-TOTAL_FORMS": "1",
"membership_set-INITIAL_FORMS": "0",
"membership_set-MAX_NUM_FORMS": "",
"membership_set-0-date_joined": now.strftime("%Y-%m-%d %H:%M:%S"),
"initial-membership_set-0-date_joined": now.strftime("%Y-%m-%d %H:%M:%S"),
"membership_set-0-karma": "",
}
formset = FormSet(data, instance=person)
self.assertTrue(formset.is_valid())
# now test for when the data changes
one_day_later = now + datetime.timedelta(days=1)
filled_data = {
"membership_set-TOTAL_FORMS": "1",
"membership_set-INITIAL_FORMS": "0",
"membership_set-MAX_NUM_FORMS": "",
"membership_set-0-date_joined": one_day_later.strftime("%Y-%m-%d %H:%M:%S"),
"initial-membership_set-0-date_joined": now.strftime("%Y-%m-%d %H:%M:%S"),
"membership_set-0-karma": "",
}
formset = FormSet(filled_data, instance=person)
self.assertFalse(formset.is_valid())
# now test with split datetime fields
class MembershipForm(forms.ModelForm):
date_joined = forms.SplitDateTimeField(initial=now)
class Meta:
model = Membership
fields = "__all__"
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.fields["date_joined"].widget = forms.SplitDateTimeWidget()
FormSet = inlineformset_factory(
Person,
Membership,
form=MembershipForm,
can_delete=False,
extra=1,
fields="__all__",
)
data = {
"membership_set-TOTAL_FORMS": "1",
"membership_set-INITIAL_FORMS": "0",
"membership_set-MAX_NUM_FORMS": "",
"membership_set-0-date_joined_0": now.strftime("%Y-%m-%d"),
"membership_set-0-date_joined_1": now.strftime("%H:%M:%S"),
"initial-membership_set-0-date_joined": now.strftime("%Y-%m-%d %H:%M:%S"),
"membership_set-0-karma": "",
}
formset = FormSet(data, instance=person)
self.assertTrue(formset.is_valid())
def test_inlineformset_factory_with_null_fk(self):
# inlineformset_factory tests with fk having null=True. see #9462.
# create some data that will exhibit the issue
team = Team.objects.create(name="Red Vipers")
Player(name="Timmy").save()
Player(name="Bobby", team=team).save()
PlayerInlineFormSet = inlineformset_factory(Team, Player, fields="__all__")
formset = PlayerInlineFormSet()
self.assertQuerySetEqual(formset.get_queryset(), [])
formset = PlayerInlineFormSet(instance=team)
players = formset.get_queryset()
self.assertEqual(len(players), 1)
(player1,) = players
self.assertEqual(player1.team, team)
self.assertEqual(player1.name, "Bobby")
def test_inlineformset_with_arrayfield(self):
class SimpleArrayField(forms.CharField):
"""A proxy for django.contrib.postgres.forms.SimpleArrayField."""
def to_python(self, value):
value = super().to_python(value)
return value.split(",") if value else []
class BookForm(forms.ModelForm):
title = SimpleArrayField()
class Meta:
model = Book
fields = ("title",)
BookFormSet = inlineformset_factory(Author, Book, form=BookForm)
data = {
"book_set-TOTAL_FORMS": "3",
"book_set-INITIAL_FORMS": "0",
"book_set-MAX_NUM_FORMS": "",
"book_set-0-title": "test1,test2",
"book_set-1-title": "test1,test2",
"book_set-2-title": "test3,test4",
}
author = Author.objects.create(name="test")
formset = BookFormSet(data, instance=author)
self.assertEqual(
formset.errors,
[{}, {"__all__": ["Please correct the duplicate values below."]}, {}],
)
def test_inlineformset_with_jsonfield(self):
class BookForm(forms.ModelForm):
title = forms.JSONField()
class Meta:
model = Book
fields = ("title",)
BookFormSet = inlineformset_factory(Author, Book, form=BookForm)
data = {
"book_set-TOTAL_FORMS": "3",
"book_set-INITIAL_FORMS": "0",
"book_set-MAX_NUM_FORMS": "",
"book_set-0-title": {"test1": "test2"},
"book_set-1-title": {"test1": "test2"},
"book_set-2-title": {"test3": "test4"},
}
author = Author.objects.create(name="test")
formset = BookFormSet(data, instance=author)
self.assertEqual(
formset.errors,
[{}, {"__all__": ["Please correct the duplicate values below."]}, {}],
)
def test_model_formset_with_custom_pk(self):
# a formset for a Model that has a custom primary key that still needs to be
# added to the formset automatically
FormSet = modelformset_factory(
ClassyMexicanRestaurant, fields=["tacos_are_yummy"]
)
self.assertEqual(
sorted(FormSet().forms[0].fields), ["tacos_are_yummy", "the_restaurant"]
)
def test_model_formset_with_initial_model_instance(self):
# has_changed should compare model instance and primary key
# see #18898
FormSet = modelformset_factory(Poem, fields="__all__")
john_milton = Poet(name="John Milton")
john_milton.save()
data = {
"form-TOTAL_FORMS": 1,
"form-INITIAL_FORMS": 0,
"form-MAX_NUM_FORMS": "",
"form-0-name": "",
"form-0-poet": str(john_milton.id),
}
formset = FormSet(initial=[{"poet": john_milton}], data=data)
self.assertFalse(formset.extra_forms[0].has_changed())
def test_model_formset_with_initial_queryset(self):
# has_changed should work with queryset and list of pk's
# see #18898
FormSet = modelformset_factory(AuthorMeeting, fields="__all__")
Author.objects.create(pk=1, name="Charles Baudelaire")
data = {
"form-TOTAL_FORMS": 1,
"form-INITIAL_FORMS": 0,
"form-MAX_NUM_FORMS": "",
"form-0-name": "",
"form-0-created": "",
"form-0-authors": list(Author.objects.values_list("id", flat=True)),
}
formset = FormSet(initial=[{"authors": Author.objects.all()}], data=data)
self.assertFalse(formset.extra_forms[0].has_changed())
def test_prevent_duplicates_from_with_the_same_formset(self):
FormSet = modelformset_factory(Product, fields="__all__", extra=2)
data = {
"form-TOTAL_FORMS": 2,
"form-INITIAL_FORMS": 0,
"form-MAX_NUM_FORMS": "",
"form-0-slug": "red_car",
"form-1-slug": "red_car",
}
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset._non_form_errors, ["Please correct the duplicate data for slug."]
)
FormSet = modelformset_factory(Price, fields="__all__", extra=2)
data = {
"form-TOTAL_FORMS": 2,
"form-INITIAL_FORMS": 0,
"form-MAX_NUM_FORMS": "",
"form-0-price": "25",
"form-0-quantity": "7",
"form-1-price": "25",
"form-1-quantity": "7",
}
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset._non_form_errors,
[
"Please correct the duplicate data for price and quantity, which must "
"be unique."
],
)
# Only the price field is specified, this should skip any unique
# checks since the unique_together is not fulfilled. This will fail
# with a KeyError if broken.
FormSet = modelformset_factory(Price, fields=("price",), extra=2)
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-price": "24",
"form-1-price": "24",
}
formset = FormSet(data)
self.assertTrue(formset.is_valid())
FormSet = inlineformset_factory(Author, Book, extra=0, fields="__all__")
author = Author.objects.create(pk=1, name="Charles Baudelaire")
Book.objects.create(pk=1, author=author, title="Les Paradis Artificiels")
Book.objects.create(pk=2, author=author, title="Les Fleurs du Mal")
Book.objects.create(pk=3, author=author, title="Flowers of Evil")
book_ids = author.book_set.order_by("id").values_list("id", flat=True)
data = {
"book_set-TOTAL_FORMS": "2",
"book_set-INITIAL_FORMS": "2",
"book_set-MAX_NUM_FORMS": "",
"book_set-0-title": "The 2008 Election",
"book_set-0-author": str(author.id),
"book_set-0-id": str(book_ids[0]),
"book_set-1-title": "The 2008 Election",
"book_set-1-author": str(author.id),
"book_set-1-id": str(book_ids[1]),
}
formset = FormSet(data=data, instance=author)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset._non_form_errors, ["Please correct the duplicate data for title."]
)
self.assertEqual(
formset.errors,
[{}, {"__all__": ["Please correct the duplicate values below."]}],
)
FormSet = modelformset_factory(Post, fields="__all__", extra=2)
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-title": "blah",
"form-0-slug": "Morning",
"form-0-subtitle": "foo",
"form-0-posted": "2009-01-01",
"form-1-title": "blah",
"form-1-slug": "Morning in Prague",
"form-1-subtitle": "rawr",
"form-1-posted": "2009-01-01",
}
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset._non_form_errors,
[
"Please correct the duplicate data for title which must be unique for "
"the date in posted."
],
)
self.assertEqual(
formset.errors,
[{}, {"__all__": ["Please correct the duplicate values below."]}],
)
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-title": "foo",
"form-0-slug": "Morning in Prague",
"form-0-subtitle": "foo",
"form-0-posted": "2009-01-01",
"form-1-title": "blah",
"form-1-slug": "Morning in Prague",
"form-1-subtitle": "rawr",
"form-1-posted": "2009-08-02",
}
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset._non_form_errors,
[
"Please correct the duplicate data for slug which must be unique for "
"the year in posted."
],
)
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-title": "foo",
"form-0-slug": "Morning in Prague",
"form-0-subtitle": "rawr",
"form-0-posted": "2008-08-01",
"form-1-title": "blah",
"form-1-slug": "Prague",
"form-1-subtitle": "rawr",
"form-1-posted": "2009-08-02",
}
formset = FormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset._non_form_errors,
[
"Please correct the duplicate data for subtitle which must be unique "
"for the month in posted."
],
)
def test_prevent_change_outer_model_and_create_invalid_data(self):
author = Author.objects.create(name="Charles")
other_author = Author.objects.create(name="Walt")
AuthorFormSet = modelformset_factory(Author, fields="__all__")
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "2",
"form-MAX_NUM_FORMS": "",
"form-0-id": str(author.id),
"form-0-name": "Charles",
"form-1-id": str(other_author.id), # A model not in the formset's queryset.
"form-1-name": "Changed name",
}
# This formset is only for Walt Whitman and shouldn't accept data for
# other_author.
formset = AuthorFormSet(
data=data, queryset=Author.objects.filter(id__in=(author.id,))
)
self.assertTrue(formset.is_valid())
formset.save()
# The name of other_author shouldn't be changed and new models aren't
# created.
self.assertSequenceEqual(Author.objects.all(), [author, other_author])
def test_validation_without_id(self):
AuthorFormSet = modelformset_factory(Author, fields="__all__")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "",
"form-0-name": "Charles",
}
formset = AuthorFormSet(data)
self.assertEqual(
formset.errors,
[{"id": ["This field is required."]}],
)
def test_validation_with_child_model_without_id(self):
BetterAuthorFormSet = modelformset_factory(BetterAuthor, fields="__all__")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "",
"form-0-name": "Charles",
"form-0-write_speed": "10",
}
formset = BetterAuthorFormSet(data)
self.assertEqual(
formset.errors,
[{"author_ptr": ["This field is required."]}],
)
def test_validation_with_invalid_id(self):
AuthorFormSet = modelformset_factory(Author, fields="__all__")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "",
"form-0-id": "abc",
"form-0-name": "Charles",
}
formset = AuthorFormSet(data)
self.assertEqual(
formset.errors,
[
{
"id": [
"Select a valid choice. That choice is not one of the "
"available choices."
]
}
],
)
def test_validation_with_nonexistent_id(self):
AuthorFormSet = modelformset_factory(Author, fields="__all__")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "",
"form-0-id": "12345",
"form-0-name": "Charles",
}
formset = AuthorFormSet(data)
self.assertEqual(
formset.errors,
[
{
"id": [
"Select a valid choice. That choice is not one of the "
"available choices."
]
}
],
)
def test_initial_form_count_empty_data(self):
AuthorFormSet = modelformset_factory(Author, fields="__all__")
formset = AuthorFormSet({})
self.assertEqual(formset.initial_form_count(), 0)
def test_edit_only(self):
charles = Author.objects.create(name="Charles Baudelaire")
AuthorFormSet = modelformset_factory(Author, fields="__all__", edit_only=True)
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "0",
"form-0-name": "Arthur Rimbaud",
"form-1-name": "Walt Whitman",
}
formset = AuthorFormSet(data)
self.assertIs(formset.is_valid(), True)
formset.save()
self.assertSequenceEqual(Author.objects.all(), [charles])
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": charles.pk,
"form-0-name": "Arthur Rimbaud",
"form-1-name": "Walt Whitman",
}
formset = AuthorFormSet(data)
self.assertIs(formset.is_valid(), True)
formset.save()
charles.refresh_from_db()
self.assertEqual(charles.name, "Arthur Rimbaud")
self.assertSequenceEqual(Author.objects.all(), [charles])
def test_edit_only_inlineformset_factory(self):
charles = Author.objects.create(name="Charles Baudelaire")
book = Book.objects.create(author=charles, title="Les Paradis Artificiels")
AuthorFormSet = inlineformset_factory(
Author,
Book,
can_delete=False,
fields="__all__",
edit_only=True,
)
data = {
"book_set-TOTAL_FORMS": "4",
"book_set-INITIAL_FORMS": "1",
"book_set-MAX_NUM_FORMS": "0",
"book_set-0-id": book.pk,
"book_set-0-title": "Les Fleurs du Mal",
"book_set-0-author": charles.pk,
"book_set-1-title": "Flowers of Evil",
"book_set-1-author": charles.pk,
}
formset = AuthorFormSet(data, instance=charles)
self.assertIs(formset.is_valid(), True)
formset.save()
book.refresh_from_db()
self.assertEqual(book.title, "Les Fleurs du Mal")
self.assertSequenceEqual(Book.objects.all(), [book])
def test_edit_only_object_outside_of_queryset(self):
charles = Author.objects.create(name="Charles Baudelaire")
walt = Author.objects.create(name="Walt Whitman")
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-0-id": walt.pk,
"form-0-name": "Parth Patil",
}
AuthorFormSet = modelformset_factory(Author, fields="__all__", edit_only=True)
formset = AuthorFormSet(data, queryset=Author.objects.filter(pk=charles.pk))
self.assertIs(formset.is_valid(), True)
formset.save()
self.assertCountEqual(Author.objects.all(), [charles, walt])
def test_edit_only_formset_factory_with_basemodelformset(self):
charles = Author.objects.create(name="Charles Baudelaire")
class AuthorForm(forms.ModelForm):
class Meta:
model = Author
fields = "__all__"
class BaseAuthorFormSet(BaseModelFormSet):
def __init__(self, *args, **kwargs):
self.model = Author
super().__init__(*args, **kwargs)
AuthorFormSet = formset_factory(AuthorForm, formset=BaseAuthorFormSet)
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": charles.pk,
"form-0-name": "Shawn Dong",
"form-1-name": "Walt Whitman",
}
formset = AuthorFormSet(data)
self.assertIs(formset.is_valid(), True)
formset.save()
self.assertEqual(Author.objects.count(), 2)
charles.refresh_from_db()
self.assertEqual(charles.name, "Shawn Dong")
self.assertEqual(Author.objects.count(), 2)
class TestModelFormsetOverridesTroughFormMeta(TestCase):
def test_modelformset_factory_widgets(self):
widgets = {"name": forms.TextInput(attrs={"class": "poet"})}
PoetFormSet = modelformset_factory(Poet, fields="__all__", widgets=widgets)
form = PoetFormSet.form()
self.assertHTMLEqual(
str(form["name"]),
'<input id="id_name" maxlength="100" type="text" class="poet" name="name" '
"required>",
)
def test_inlineformset_factory_widgets(self):
widgets = {"title": forms.TextInput(attrs={"class": "book"})}
BookFormSet = inlineformset_factory(
Author, Book, widgets=widgets, fields="__all__"
)
form = BookFormSet.form()
self.assertHTMLEqual(
str(form["title"]),
'<input class="book" id="id_title" maxlength="100" name="title" '
'type="text" required>',
)
def test_modelformset_factory_labels_overrides(self):
BookFormSet = modelformset_factory(
Book, fields="__all__", labels={"title": "Name"}
)
form = BookFormSet.form()
self.assertHTMLEqual(
form["title"].label_tag(), '<label for="id_title">Name:</label>'
)
self.assertHTMLEqual(
form["title"].legend_tag(),
'<legend for="id_title">Name:</legend>',
)
def test_inlineformset_factory_labels_overrides(self):
BookFormSet = inlineformset_factory(
Author, Book, fields="__all__", labels={"title": "Name"}
)
form = BookFormSet.form()
self.assertHTMLEqual(
form["title"].label_tag(), '<label for="id_title">Name:</label>'
)
self.assertHTMLEqual(
form["title"].legend_tag(),
'<legend for="id_title">Name:</legend>',
)
def test_modelformset_factory_help_text_overrides(self):
BookFormSet = modelformset_factory(
Book, fields="__all__", help_texts={"title": "Choose carefully."}
)
form = BookFormSet.form()
self.assertEqual(form["title"].help_text, "Choose carefully.")
def test_inlineformset_factory_help_text_overrides(self):
BookFormSet = inlineformset_factory(
Author, Book, fields="__all__", help_texts={"title": "Choose carefully."}
)
form = BookFormSet.form()
self.assertEqual(form["title"].help_text, "Choose carefully.")
def test_modelformset_factory_error_messages_overrides(self):
author = Author.objects.create(pk=1, name="Charles Baudelaire")
BookFormSet = modelformset_factory(
Book,
fields="__all__",
error_messages={"title": {"max_length": "Title too long!!"}},
)
form = BookFormSet.form(data={"title": "Foo " * 30, "author": author.id})
form.full_clean()
self.assertEqual(form.errors, {"title": ["Title too long!!"]})
def test_inlineformset_factory_error_messages_overrides(self):
author = Author.objects.create(pk=1, name="Charles Baudelaire")
BookFormSet = inlineformset_factory(
Author,
Book,
fields="__all__",
error_messages={"title": {"max_length": "Title too long!!"}},
)
form = BookFormSet.form(data={"title": "Foo " * 30, "author": author.id})
form.full_clean()
self.assertEqual(form.errors, {"title": ["Title too long!!"]})
def test_modelformset_factory_field_class_overrides(self):
author = Author.objects.create(pk=1, name="Charles Baudelaire")
BookFormSet = modelformset_factory(
Book,
fields="__all__",
field_classes={
"title": forms.SlugField,
},
)
form = BookFormSet.form(data={"title": "Foo " * 30, "author": author.id})
self.assertIs(Book._meta.get_field("title").__class__, models.CharField)
self.assertIsInstance(form.fields["title"], forms.SlugField)
def test_inlineformset_factory_field_class_overrides(self):
author = Author.objects.create(pk=1, name="Charles Baudelaire")
BookFormSet = inlineformset_factory(
Author,
Book,
fields="__all__",
field_classes={
"title": forms.SlugField,
},
)
form = BookFormSet.form(data={"title": "Foo " * 30, "author": author.id})
self.assertIs(Book._meta.get_field("title").__class__, models.CharField)
self.assertIsInstance(form.fields["title"], forms.SlugField)
def test_modelformset_factory_absolute_max(self):
AuthorFormSet = modelformset_factory(
Author, fields="__all__", absolute_max=1500
)
data = {
"form-TOTAL_FORMS": "1501",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "0",
}
formset = AuthorFormSet(data=data)
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 1500)
self.assertEqual(
formset.non_form_errors(),
["Please submit at most 1000 forms."],
)
def test_modelformset_factory_absolute_max_with_max_num(self):
AuthorFormSet = modelformset_factory(
Author,
fields="__all__",
max_num=20,
absolute_max=100,
)
data = {
"form-TOTAL_FORMS": "101",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "0",
}
formset = AuthorFormSet(data=data)
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 100)
self.assertEqual(
formset.non_form_errors(),
["Please submit at most 20 forms."],
)
def test_inlineformset_factory_absolute_max(self):
author = Author.objects.create(name="Charles Baudelaire")
BookFormSet = inlineformset_factory(
Author,
Book,
fields="__all__",
absolute_max=1500,
)
data = {
"book_set-TOTAL_FORMS": "1501",
"book_set-INITIAL_FORMS": "0",
"book_set-MAX_NUM_FORMS": "0",
}
formset = BookFormSet(data, instance=author)
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 1500)
self.assertEqual(
formset.non_form_errors(),
["Please submit at most 1000 forms."],
)
def test_inlineformset_factory_absolute_max_with_max_num(self):
author = Author.objects.create(name="Charles Baudelaire")
BookFormSet = inlineformset_factory(
Author,
Book,
fields="__all__",
max_num=20,
absolute_max=100,
)
data = {
"book_set-TOTAL_FORMS": "101",
"book_set-INITIAL_FORMS": "0",
"book_set-MAX_NUM_FORMS": "0",
}
formset = BookFormSet(data, instance=author)
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 100)
self.assertEqual(
formset.non_form_errors(),
["Please submit at most 20 forms."],
)
def test_modelformset_factory_can_delete_extra(self):
AuthorFormSet = modelformset_factory(
Author,
fields="__all__",
can_delete=True,
can_delete_extra=True,
extra=2,
)
formset = AuthorFormSet()
self.assertEqual(len(formset), 2)
self.assertIn("DELETE", formset.forms[0].fields)
self.assertIn("DELETE", formset.forms[1].fields)
def test_modelformset_factory_disable_delete_extra(self):
AuthorFormSet = modelformset_factory(
Author,
fields="__all__",
can_delete=True,
can_delete_extra=False,
extra=2,
)
formset = AuthorFormSet()
self.assertEqual(len(formset), 2)
self.assertNotIn("DELETE", formset.forms[0].fields)
self.assertNotIn("DELETE", formset.forms[1].fields)
def test_inlineformset_factory_can_delete_extra(self):
BookFormSet = inlineformset_factory(
Author,
Book,
fields="__all__",
can_delete=True,
can_delete_extra=True,
extra=2,
)
formset = BookFormSet()
self.assertEqual(len(formset), 2)
self.assertIn("DELETE", formset.forms[0].fields)
self.assertIn("DELETE", formset.forms[1].fields)
def test_inlineformset_factory_can_not_delete_extra(self):
BookFormSet = inlineformset_factory(
Author,
Book,
fields="__all__",
can_delete=True,
can_delete_extra=False,
extra=2,
)
formset = BookFormSet()
self.assertEqual(len(formset), 2)
self.assertNotIn("DELETE", formset.forms[0].fields)
self.assertNotIn("DELETE", formset.forms[1].fields)
def test_inlineformset_factory_passes_renderer(self):
from django.forms.renderers import Jinja2
renderer = Jinja2()
BookFormSet = inlineformset_factory(
Author,
Book,
fields="__all__",
renderer=renderer,
)
formset = BookFormSet()
self.assertEqual(formset.renderer, renderer)
def test_modelformset_factory_passes_renderer(self):
from django.forms.renderers import Jinja2
renderer = Jinja2()
BookFormSet = modelformset_factory(Author, fields="__all__", renderer=renderer)
formset = BookFormSet()
self.assertEqual(formset.renderer, renderer)
def test_modelformset_factory_default_renderer(self):
class CustomRenderer(DjangoTemplates):
pass
class ModelFormWithDefaultRenderer(ModelForm):
default_renderer = CustomRenderer()
BookFormSet = modelformset_factory(
Author, form=ModelFormWithDefaultRenderer, fields="__all__"
)
formset = BookFormSet()
self.assertEqual(
formset.forms[0].renderer, ModelFormWithDefaultRenderer.default_renderer
)
self.assertEqual(
formset.empty_form.renderer, ModelFormWithDefaultRenderer.default_renderer
)
self.assertIsInstance(formset.renderer, DjangoTemplates)
def test_inlineformset_factory_default_renderer(self):
class CustomRenderer(DjangoTemplates):
pass
class ModelFormWithDefaultRenderer(ModelForm):
default_renderer = CustomRenderer()
BookFormSet = inlineformset_factory(
Author,
Book,
form=ModelFormWithDefaultRenderer,
fields="__all__",
)
formset = BookFormSet()
self.assertEqual(
formset.forms[0].renderer, ModelFormWithDefaultRenderer.default_renderer
)
self.assertEqual(
formset.empty_form.renderer, ModelFormWithDefaultRenderer.default_renderer
)
self.assertIsInstance(formset.renderer, DjangoTemplates)
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