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647 lines
21 KiB
Plaintext
647 lines
21 KiB
Plaintext
==================
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Generic date views
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==================
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.. module:: django.views.generic.dates
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Date-based generic views, provided in :mod:`django.views.generic.dates`, are
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views for displaying drilldown pages for date-based data.
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.. note::
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Some of the examples on this page assume that an ``Article`` model has been
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defined as follows in ``myapp/models.py``::
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from django.db import models
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from django.urls import reverse
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class Article(models.Model):
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title = models.CharField(max_length=200)
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pub_date = models.DateField()
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def get_absolute_url(self):
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return reverse("article-detail", kwargs={"pk": self.pk})
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``ArchiveIndexView``
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====================
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.. class:: ArchiveIndexView
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A top-level index page showing the "latest" objects, by date. Objects with
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a date in the *future* are not included unless you set ``allow_future`` to
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``True``.
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**Ancestors (MRO)**
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* :class:`django.views.generic.list.MultipleObjectTemplateResponseMixin`
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* :class:`django.views.generic.base.TemplateResponseMixin`
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* :class:`django.views.generic.dates.BaseArchiveIndexView`
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* :class:`django.views.generic.dates.BaseDateListView`
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* :class:`django.views.generic.list.MultipleObjectMixin`
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* :class:`django.views.generic.dates.DateMixin`
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* :class:`django.views.generic.base.View`
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**Context**
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In addition to the context provided by
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:class:`django.views.generic.list.MultipleObjectMixin` (via
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:class:`django.views.generic.dates.BaseDateListView`), the template's
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context will be:
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* ``date_list``: A :meth:`QuerySet <django.db.models.query.QuerySet.dates>`
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object containing all years that have objects available according to
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``queryset``, represented as :class:`datetime.datetime` objects, in
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descending order.
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**Notes**
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* Uses a default ``context_object_name`` of ``latest``.
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* Uses a default ``template_name_suffix`` of ``_archive``.
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* Defaults to providing ``date_list`` by year, but this can be altered to
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month or day using the attribute ``date_list_period``. This also applies
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to all subclass views.
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**Example myapp/urls.py**::
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from django.urls import path
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from django.views.generic.dates import ArchiveIndexView
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from myapp.models import Article
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urlpatterns = [
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path(
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"archive/",
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ArchiveIndexView.as_view(model=Article, date_field="pub_date"),
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name="article_archive",
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),
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]
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**Example myapp/article_archive.html**:
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.. code-block:: html+django
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<ul>
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{% for article in latest %}
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<li>{{ article.pub_date }}: {{ article.title }}</li>
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{% endfor %}
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</ul>
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This will output all articles.
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``YearArchiveView``
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===================
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.. class:: YearArchiveView
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A yearly archive page showing all available months in a given year. Objects
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with a date in the *future* are not displayed unless you set
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``allow_future`` to ``True``.
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**Ancestors (MRO)**
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* :class:`django.views.generic.list.MultipleObjectTemplateResponseMixin`
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* :class:`django.views.generic.base.TemplateResponseMixin`
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* :class:`django.views.generic.dates.BaseYearArchiveView`
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* :class:`django.views.generic.dates.YearMixin`
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* :class:`django.views.generic.dates.BaseDateListView`
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* :class:`django.views.generic.list.MultipleObjectMixin`
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* :class:`django.views.generic.dates.DateMixin`
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* :class:`django.views.generic.base.View`
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.. attribute:: make_object_list
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A boolean specifying whether to retrieve the full list of objects for
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this year and pass those to the template. If ``True``, the list of
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objects will be made available to the context. If ``False``, the
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``None`` queryset will be used as the object list. By default, this is
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``False``.
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.. method:: get_make_object_list()
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Determine if an object list will be returned as part of the context.
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Returns :attr:`~YearArchiveView.make_object_list` by default.
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**Context**
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In addition to the context provided by
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:class:`django.views.generic.list.MultipleObjectMixin` (via
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:class:`django.views.generic.dates.BaseDateListView`), the template's
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context will be:
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* ``date_list``: A :meth:`QuerySet <django.db.models.query.QuerySet.dates>`
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object containing all months that have objects available according to
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``queryset``, represented as :class:`datetime.datetime` objects, in
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ascending order.
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* ``year``: A :class:`~datetime.date` object
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representing the given year.
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* ``next_year``: A :class:`~datetime.date` object
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representing the first day of the next year, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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* ``previous_year``: A :class:`~datetime.date` object
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representing the first day of the previous year, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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**Notes**
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* Uses a default ``template_name_suffix`` of ``_archive_year``.
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**Example myapp/views.py**::
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from django.views.generic.dates import YearArchiveView
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from myapp.models import Article
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class ArticleYearArchiveView(YearArchiveView):
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queryset = Article.objects.all()
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date_field = "pub_date"
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make_object_list = True
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allow_future = True
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**Example myapp/urls.py**::
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from django.urls import path
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from myapp.views import ArticleYearArchiveView
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urlpatterns = [
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path("<int:year>/", ArticleYearArchiveView.as_view(), name="article_year_archive"),
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]
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**Example myapp/article_archive_year.html**:
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.. code-block:: html+django
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<ul>
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{% for date in date_list %}
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<li>{{ date|date }}</li>
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{% endfor %}
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</ul>
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<div>
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<h1>All Articles for {{ year|date:"Y" }}</h1>
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{% for obj in object_list %}
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<p>
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{{ obj.title }} - {{ obj.pub_date|date:"F j, Y" }}
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</p>
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{% endfor %}
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</div>
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``MonthArchiveView``
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====================
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.. class:: MonthArchiveView
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A monthly archive page showing all objects in a given month. Objects with a
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date in the *future* are not displayed unless you set ``allow_future`` to
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``True``.
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**Ancestors (MRO)**
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* :class:`django.views.generic.list.MultipleObjectTemplateResponseMixin`
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* :class:`django.views.generic.base.TemplateResponseMixin`
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* :class:`django.views.generic.dates.BaseMonthArchiveView`
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* :class:`django.views.generic.dates.YearMixin`
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* :class:`django.views.generic.dates.MonthMixin`
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* :class:`django.views.generic.dates.BaseDateListView`
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* :class:`django.views.generic.list.MultipleObjectMixin`
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* :class:`django.views.generic.dates.DateMixin`
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* :class:`django.views.generic.base.View`
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**Context**
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In addition to the context provided by
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:class:`~django.views.generic.list.MultipleObjectMixin` (via
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:class:`~django.views.generic.dates.BaseDateListView`), the template's
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context will be:
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* ``date_list``: A :meth:`QuerySet <django.db.models.query.QuerySet.dates>`
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object containing all days that have objects available in the given month,
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according to ``queryset``, represented as :class:`datetime.datetime`
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objects, in ascending order.
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* ``month``: A :class:`~datetime.date` object
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representing the given month.
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* ``next_month``: A :class:`~datetime.date` object
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representing the first day of the next month, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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* ``previous_month``: A :class:`~datetime.date` object
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representing the first day of the previous month, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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**Notes**
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* Uses a default ``template_name_suffix`` of ``_archive_month``.
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**Example myapp/views.py**::
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from django.views.generic.dates import MonthArchiveView
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from myapp.models import Article
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class ArticleMonthArchiveView(MonthArchiveView):
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queryset = Article.objects.all()
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date_field = "pub_date"
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allow_future = True
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**Example myapp/urls.py**::
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from django.urls import path
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from myapp.views import ArticleMonthArchiveView
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urlpatterns = [
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# Example: /2012/08/
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path(
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"<int:year>/<int:month>/",
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ArticleMonthArchiveView.as_view(month_format="%m"),
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name="archive_month_numeric",
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),
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# Example: /2012/aug/
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path(
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"<int:year>/<str:month>/",
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ArticleMonthArchiveView.as_view(),
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name="archive_month",
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),
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]
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**Example myapp/article_archive_month.html**:
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.. code-block:: html+django
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<ul>
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{% for article in object_list %}
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<li>{{ article.pub_date|date:"F j, Y" }}: {{ article.title }}</li>
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{% endfor %}
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</ul>
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<p>
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{% if previous_month %}
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Previous Month: {{ previous_month|date:"F Y" }}
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{% endif %}
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{% if next_month %}
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Next Month: {{ next_month|date:"F Y" }}
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{% endif %}
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</p>
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``WeekArchiveView``
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===================
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.. class:: WeekArchiveView
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A weekly archive page showing all objects in a given week. Objects with a
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date in the *future* are not displayed unless you set ``allow_future`` to
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``True``.
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**Ancestors (MRO)**
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* :class:`django.views.generic.list.MultipleObjectTemplateResponseMixin`
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* :class:`django.views.generic.base.TemplateResponseMixin`
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* :class:`django.views.generic.dates.BaseWeekArchiveView`
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* :class:`django.views.generic.dates.YearMixin`
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* :class:`django.views.generic.dates.WeekMixin`
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* :class:`django.views.generic.dates.BaseDateListView`
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* :class:`django.views.generic.list.MultipleObjectMixin`
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* :class:`django.views.generic.dates.DateMixin`
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* :class:`django.views.generic.base.View`
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**Context**
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In addition to the context provided by
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:class:`~django.views.generic.list.MultipleObjectMixin` (via
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:class:`~django.views.generic.dates.BaseDateListView`), the template's
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context will be:
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* ``week``: A :class:`~datetime.date` object
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representing the first day of the given week.
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* ``next_week``: A :class:`~datetime.date` object
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representing the first day of the next week, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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* ``previous_week``: A :class:`~datetime.date` object
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representing the first day of the previous week, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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**Notes**
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* Uses a default ``template_name_suffix`` of ``_archive_week``.
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* The ``week_format`` attribute is a :func:`~time.strptime` format string
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used to parse the week number. The following values are supported:
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* ``'%U'``: Based on the United States week system where the week
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begins on Sunday. This is the default value.
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* ``'%W'``: Similar to ``'%U'``, except it assumes that the week
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begins on Monday. This is not the same as the ISO 8601 week number.
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* ``'%V'``: ISO 8601 week number where the week begins on Monday.
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**Example myapp/views.py**::
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from django.views.generic.dates import WeekArchiveView
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from myapp.models import Article
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class ArticleWeekArchiveView(WeekArchiveView):
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queryset = Article.objects.all()
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date_field = "pub_date"
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week_format = "%W"
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allow_future = True
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**Example myapp/urls.py**::
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from django.urls import path
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from myapp.views import ArticleWeekArchiveView
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urlpatterns = [
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# Example: /2012/week/23/
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path(
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"<int:year>/week/<int:week>/",
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ArticleWeekArchiveView.as_view(),
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name="archive_week",
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),
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]
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**Example myapp/article_archive_week.html**:
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.. code-block:: html+django
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<h1>Week {{ week|date:'W' }}</h1>
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<ul>
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{% for article in object_list %}
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<li>{{ article.pub_date|date:"F j, Y" }}: {{ article.title }}</li>
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{% endfor %}
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</ul>
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<p>
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{% if previous_week %}
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Previous Week: {{ previous_week|date:"W" }} of year {{ previous_week|date:"Y" }}
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{% endif %}
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{% if previous_week and next_week %}--{% endif %}
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{% if next_week %}
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Next week: {{ next_week|date:"W" }} of year {{ next_week|date:"Y" }}
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{% endif %}
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</p>
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In this example, you are outputting the week number. Keep in mind that week
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numbers computed by the :tfilter:`date` template filter with the ``'W'``
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format character are not always the same as those computed by
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:func:`~time.strftime` and :func:`~time.strptime` with the ``'%W'`` format
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string. For year 2015, for example, week numbers output by :tfilter:`date`
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are higher by one compared to those output by :func:`~time.strftime`. There
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isn't an equivalent for the ``'%U'`` :func:`~time.strftime` format string
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in :tfilter:`date`. Therefore, you should avoid using :tfilter:`date` to
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generate URLs for ``WeekArchiveView``.
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``DayArchiveView``
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==================
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.. class:: DayArchiveView
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A day archive page showing all objects in a given day. Days in the future
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throw a 404 error, regardless of whether any objects exist for future days,
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unless you set ``allow_future`` to ``True``.
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**Ancestors (MRO)**
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* :class:`django.views.generic.list.MultipleObjectTemplateResponseMixin`
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* :class:`django.views.generic.base.TemplateResponseMixin`
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* :class:`django.views.generic.dates.BaseDayArchiveView`
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* :class:`django.views.generic.dates.YearMixin`
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* :class:`django.views.generic.dates.MonthMixin`
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* :class:`django.views.generic.dates.DayMixin`
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* :class:`django.views.generic.dates.BaseDateListView`
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* :class:`django.views.generic.list.MultipleObjectMixin`
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* :class:`django.views.generic.dates.DateMixin`
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* :class:`django.views.generic.base.View`
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**Context**
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In addition to the context provided by
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:class:`~django.views.generic.list.MultipleObjectMixin` (via
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:class:`~django.views.generic.dates.BaseDateListView`), the template's
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context will be:
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* ``day``: A :class:`~datetime.date` object
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representing the given day.
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* ``next_day``: A :class:`~datetime.date` object
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representing the next day, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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* ``previous_day``: A :class:`~datetime.date` object
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representing the previous day, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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* ``next_month``: A :class:`~datetime.date` object
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representing the first day of the next month, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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* ``previous_month``: A :class:`~datetime.date` object
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representing the first day of the previous month, according to
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:attr:`~BaseDateListView.allow_empty` and
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:attr:`~DateMixin.allow_future`.
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**Notes**
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* Uses a default ``template_name_suffix`` of ``_archive_day``.
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**Example myapp/views.py**::
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from django.views.generic.dates import DayArchiveView
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from myapp.models import Article
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class ArticleDayArchiveView(DayArchiveView):
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queryset = Article.objects.all()
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date_field = "pub_date"
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allow_future = True
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**Example myapp/urls.py**::
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from django.urls import path
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from myapp.views import ArticleDayArchiveView
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urlpatterns = [
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# Example: /2012/nov/10/
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path(
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"<int:year>/<str:month>/<int:day>/",
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ArticleDayArchiveView.as_view(),
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name="archive_day",
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),
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]
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**Example myapp/article_archive_day.html**:
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.. code-block:: html+django
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<h1>{{ day }}</h1>
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<ul>
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{% for article in object_list %}
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<li>{{ article.pub_date|date:"F j, Y" }}: {{ article.title }}</li>
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{% endfor %}
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</ul>
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<p>
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{% if previous_day %}
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Previous Day: {{ previous_day }}
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{% endif %}
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{% if previous_day and next_day %}--{% endif %}
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{% if next_day %}
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Next Day: {{ next_day }}
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{% endif %}
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</p>
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``TodayArchiveView``
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====================
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.. class:: TodayArchiveView
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A day archive page showing all objects for *today*. This is exactly the
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same as :class:`django.views.generic.dates.DayArchiveView`, except today's
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date is used instead of the ``year``/``month``/``day`` arguments.
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**Ancestors (MRO)**
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* :class:`django.views.generic.list.MultipleObjectTemplateResponseMixin`
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* :class:`django.views.generic.base.TemplateResponseMixin`
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* :class:`django.views.generic.dates.BaseTodayArchiveView`
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* :class:`django.views.generic.dates.BaseDayArchiveView`
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* :class:`django.views.generic.dates.YearMixin`
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* :class:`django.views.generic.dates.MonthMixin`
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* :class:`django.views.generic.dates.DayMixin`
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* :class:`django.views.generic.dates.BaseDateListView`
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* :class:`django.views.generic.list.MultipleObjectMixin`
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* :class:`django.views.generic.dates.DateMixin`
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* :class:`django.views.generic.base.View`
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**Notes**
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* Uses a default ``template_name_suffix`` of ``_archive_today``.
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**Example myapp/views.py**::
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from django.views.generic.dates import TodayArchiveView
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from myapp.models import Article
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class ArticleTodayArchiveView(TodayArchiveView):
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queryset = Article.objects.all()
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date_field = "pub_date"
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allow_future = True
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**Example myapp/urls.py**::
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from django.urls import path
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from myapp.views import ArticleTodayArchiveView
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urlpatterns = [
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path("today/", ArticleTodayArchiveView.as_view(), name="archive_today"),
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]
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.. admonition:: Where is the example template for ``TodayArchiveView``?
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This view uses by default the same template as the
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:class:`~DayArchiveView`, which is in the previous example. If you need
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a different template, set the ``template_name`` attribute to be the
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name of the new template.
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``DateDetailView``
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==================
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.. class:: DateDetailView
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A page representing an individual object. If the object has a date value in
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the future, the view will throw a 404 error by default, unless you set
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``allow_future`` to ``True``.
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**Ancestors (MRO)**
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* :class:`django.views.generic.detail.SingleObjectTemplateResponseMixin`
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* :class:`django.views.generic.base.TemplateResponseMixin`
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* :class:`django.views.generic.dates.BaseDateDetailView`
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* :class:`django.views.generic.dates.YearMixin`
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* :class:`django.views.generic.dates.MonthMixin`
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* :class:`django.views.generic.dates.DayMixin`
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* :class:`django.views.generic.dates.DateMixin`
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* :class:`django.views.generic.detail.BaseDetailView`
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* :class:`django.views.generic.detail.SingleObjectMixin`
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* :class:`django.views.generic.base.View`
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**Context**
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|
* Includes the single object associated with the ``model`` specified in
|
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the ``DateDetailView``.
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|
**Notes**
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|
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|
* Uses a default ``template_name_suffix`` of ``_detail``.
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|
|
|
**Example myapp/urls.py**::
|
|
|
|
from django.urls import path
|
|
from django.views.generic.dates import DateDetailView
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|
|
|
urlpatterns = [
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path(
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"<int:year>/<str:month>/<int:day>/<int:pk>/",
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DateDetailView.as_view(model=Article, date_field="pub_date"),
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name="archive_date_detail",
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),
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]
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**Example myapp/article_detail.html**:
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|
|
.. code-block:: html+django
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<h1>{{ object.title }}</h1>
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.. note::
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All of the generic views listed above have matching ``Base`` views that
|
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only differ in that they do not include the
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:class:`~django.views.generic.list.MultipleObjectTemplateResponseMixin`
|
|
(for the archive views) or
|
|
:class:`~django.views.generic.detail.SingleObjectTemplateResponseMixin`
|
|
(for the :class:`DateDetailView`):
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|
.. class:: BaseArchiveIndexView
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|
.. class:: BaseYearArchiveView
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|
.. class:: BaseMonthArchiveView
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.. class:: BaseWeekArchiveView
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|
.. class:: BaseDayArchiveView
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|
|
.. class:: BaseTodayArchiveView
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|
|
.. class:: BaseDateDetailView
|