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wagtail/docs/reference/pages/model_reference.rst

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===============
Model Reference
===============
.. automodule:: wagtail.core.models
This document contains reference information for the model classes inside the ``wagtailcore`` module.
.. _page-model-ref:
``Page``
========
Database fields
~~~~~~~~~~~~~~~
.. class:: Page
.. attribute:: title
(text)
Human-readable title of the page.
.. attribute:: draft_title
(text)
Human-readable title of the page, incorporating any changes that have been made in a draft edit (in contrast to the ``title`` field, which for published pages will be the title as it exists in the current published version).
.. attribute:: slug
(text)
This is used for constructing the page's URL.
For example: ``http://domain.com/blog/[my-slug]/``
.. attribute:: content_type
(foreign key to ``django.contrib.contenttypes.models.ContentType``)
A foreign key to the :class:`~django.contrib.contenttypes.models.ContentType` object that represents the specific model of this page.
.. attribute:: live
(boolean)
A boolean that is set to ``True`` if the page is published.
Note: this field defaults to ``True`` meaning that any pages that are created programmatically will be published by default.
.. attribute:: has_unpublished_changes
(boolean)
A boolean that is set to ``True`` when the page is either in draft or published with draft changes.
.. attribute:: owner
(foreign key to user model)
A foreign key to the user that created the page.
.. attribute:: first_published_at
(date/time)
The date/time when the page was first published.
.. attribute:: last_published_at
(date/time)
The date/time when the page was last published.
.. attribute:: seo_title
(text)
Alternate SEO-crafted title, for use in the page's ``<title>`` HTML tag.
.. attribute:: search_description
(text)
SEO-crafted description of the content, used for search indexing. This is also suitable for the page's ``<meta name="description">`` HTML tag.
.. attribute:: show_in_menus
(boolean)
Toggles whether the page should be included in site-wide menus.
This is used by the :meth:`~wagtail.core.query.PageQuerySet.in_menu` QuerySet filter.
Defaults to ``False`` and can be overridden on the model with ``show_in_menus_default = True``.
.. note::
To set the global default for all pages, set ``Page.show_in_menus_default = True`` once where you first import the ``Page`` model.
.. attribute:: locked
(boolean)
When set to ``True``, the Wagtail editor will not allow any users to edit
the content of the page.
If ``locked_by`` is also set, only that user can edit the page.
.. attribute:: locked_by
(foreign key to user model)
The user who has currently locked the page. Only this user can edit the page.
If this is ``None`` when ``locked`` is ``True``, nobody can edit the page.
.. attribute:: locked_at
(date/time)
The date/time when the page was locked.
.. attribute:: alias_of
(foreign key to another page)
If set, this page is an alias of the page referenced in this field.
.. attribute:: locale
(foreign key to Locale)
This foreign key links to the ``Locale`` object that represents the page language.
.. attribute:: translation_key
(uuid)
A UUID that is shared between translations of a page. These are randomly generated
when a new page is created and copied when a translation of a page is made.
A translation_key value can only be used on one page in each locale.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
In addition to the model fields provided, ``Page`` has many properties and methods that you may wish to reference, use, or override in creating your own models.
.. note::
See also `django-treebeard <https://django-treebeard.readthedocs.io/en/latest/index.html>`_'s `node API <https://django-treebeard.readthedocs.io/en/latest/api.html>`_. ``Page`` is a subclass of `materialized path tree <https://django-treebeard.readthedocs.io/en/latest/mp_tree.html>`_ nodes.
.. class:: Page
:noindex:
.. autoattribute:: specific
.. autoattribute:: specific_class
.. autoattribute:: cached_content_type
.. automethod:: get_url
.. autoattribute:: full_url
.. automethod:: relative_url
.. automethod:: get_site
.. automethod:: get_url_parts
.. automethod:: route
.. automethod:: serve
.. autoattribute:: context_object_name
Custom name for page instance in page's ``Context``.
.. automethod:: get_context
.. automethod:: get_template
.. automethod:: get_admin_display_title
.. autoattribute:: preview_modes
.. automethod:: serve_preview
.. automethod:: get_parent
.. automethod:: get_ancestors
.. automethod:: get_descendants
.. automethod:: get_siblings
.. automethod:: get_translations
.. automethod:: get_translation
.. automethod:: get_translation_or_none
.. automethod:: has_translation
.. automethod:: copy_for_translation
.. autoattribute:: localized
.. autoattribute:: localized_draft
.. attribute:: search_fields
A list of fields to be indexed by the search engine. See Search docs :ref:`wagtailsearch_indexing_fields`
.. attribute:: subpage_types
A list of page models which can be created as children of this page type. For example, a ``BlogIndex`` page might allow a ``BlogPage`` as a child, but not a ``JobPage``:
.. code-block:: python
class BlogIndex(Page):
subpage_types = ['mysite.BlogPage', 'mysite.BlogArchivePage']
The creation of child pages can be blocked altogether for a given page by setting its subpage_types attribute to an empty array:
.. code-block:: python
class BlogPage(Page):
subpage_types = []
.. attribute:: parent_page_types
A list of page models which are allowed as parent page types. For example, a ``BlogPage`` may only allow itself to be created below the ``BlogIndex`` page:
.. code-block:: python
class BlogPage(Page):
parent_page_types = ['mysite.BlogIndexPage']
Pages can block themselves from being created at all by setting parent_page_types to an empty array (this is useful for creating unique pages that should only be created once):
.. code-block:: python
class HiddenPage(Page):
parent_page_types = []
.. automethod:: can_exist_under
.. automethod:: can_create_at
.. automethod:: can_move_to
.. attribute:: password_required_template
Defines which template file should be used to render the login form for Protected pages using this model. This overrides the default, defined using ``PASSWORD_REQUIRED_TEMPLATE`` in your settings. See :ref:`private_pages`
.. attribute:: is_creatable
Controls if this page can be created through the Wagtail administration. Defaults to ``True``, and is not inherited by subclasses. This is useful when using :ref:`multi-table inheritance <django:multi-table-inheritance>`, to stop the base model from being created as an actual page.
.. attribute:: max_count
Controls the maximum number of pages of this type that can be created through the Wagtail administration interface. This is useful when needing "allow at most 3 of these pages to exist", or for singleton pages.
.. attribute:: max_count_per_parent
Controls the maximum number of pages of this type that can be created under any one parent page.
.. attribute:: exclude_fields_in_copy
An array of field names that will not be included when a Page is copied.
Useful when you have relations that do not use `ClusterableModel` or should not be copied.
.. code-block:: python
class BlogPage(Page):
exclude_fields_in_copy = ['special_relation', 'custom_uuid']
The following fields will always be excluded in a copy - `['id', 'path', 'depth', 'numchild', 'url_path', 'path']`.
.. attribute:: base_form_class
The form class used as a base for editing Pages of this type in the Wagtail page editor.
This attribute can be set on a model to customise the Page editor form.
Forms must be a subclass of :class:`~wagtail.admin.forms.WagtailAdminPageForm`.
See :ref:`custom_edit_handler_forms` for more information.
.. automethod:: with_content_json
.. automethod:: save
.. automethod:: create_alias
.. automethod:: update_aliases
.. autoattribute:: has_workflow
.. automethod:: get_workflow
.. autoattribute:: workflow_in_progress
.. autoattribute:: current_workflow_state
.. autoattribute:: current_workflow_task_state
.. autoattribute:: current_workflow_task
.. _site-model-ref:
``Site``
========
The ``Site`` model is useful for multi-site installations as it allows an administrator to configure which part of the tree to use for each hostname that the server responds on.
The :meth:`~wagtail.core.models.Site.find_for_request` function returns the Site object that will handle the given HTTP request.
Database fields
~~~~~~~~~~~~~~~
.. class:: Site
.. attribute:: hostname
(text)
This is the hostname of the site, excluding the scheme, port and path.
For example: ``www.mysite.com``
.. note::
If you're looking for how to get the root url of a site, use the :attr:`~Site.root_url` attribute.
.. attribute:: port
(number)
This is the port number that the site responds on.
.. attribute:: site_name
(text - optional)
A human-readable name for the site. This is not used by Wagtail itself, but is suitable for use on the site front-end, such as in ``<title>`` elements.
For example: ``Rod's World of Birds``
.. attribute:: root_page
(foreign key to :class:`~wagtail.core.models.Page`)
This is a link to the root page of the site. This page will be what appears at the ``/`` URL on the site and would usually be a homepage.
.. attribute:: is_default_site
(boolean)
This is set to ``True`` if the site is the default. Only one site can be the default.
The default site is used as a fallback in situations where a site with the required hostname/port couldn't be found.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: Site
:noindex:
.. automethod:: find_for_request
.. autoattribute:: root_url
This returns the URL of the site. It is calculated from the :attr:`~Site.hostname` and the :attr:`~Site.port` fields.
The scheme part of the URL is calculated based on value of the :attr:`~Site.port` field:
- 80 = ``http://``
- 443 = ``https://``
- Everything else will use the ``http://`` scheme and the port will be appended to the end of the hostname (eg. ``http://mysite.com:8000/``)
.. automethod:: get_site_root_paths
Locale
======
The ``Locale`` model defines the set of languages and/or locales that can be used on a site.
Each ``Locale`` record corresponds to a "language code" defined in the :ref:`wagtail_content_languages_setting` setting.
Wagtail will initially set up one ``Locale`` to act as the default language for all existing content.
This first locale will automatically pick the value from ``WAGTAIL_CONTENT_LANGUAGES`` that most closely matches the site primary language code defined in ``LANGUAGE_CODE``.
If the primary language code is changed later, Wagtail will **not** automatically create a new ``Locale`` record or update an existing one.
Before internationalisation is enabled, all pages use this primary ``Locale`` record.
This is to satisfy the database constraints, and makes it easier to switch internationalisation on at a later date.
Changing ``WAGTAIL_CONTENT_LANGUAGES``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Languages can be added or removed from ``WAGTAIL_CONTENT_LANGUAGES`` over time.
Before removing an option from ``WAGTAIL_CONTENT_LANGUAGES``, it's important that the ``Locale``
record is updated to a use a different content language or is deleted.
Any ``Locale`` instances that have invalid content languages are automatically filtered out from all
database queries making them unable to be edited or viewed.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: Locale
:noindex:
.. autoattribute:: language_code
.. automethod:: get_default
.. automethod:: get_active
.. automethod:: get_display_name
Translatable Mixin
==================
``TranslatableMixin`` is an abstract model that can be added to any non-page Django model to make it translatable.
Pages already include this mixin, so there is no need to add it.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
The ``locale`` and ``translation_key`` fields have a unique key constraint to prevent the object being translated into a language more than once.
.. class:: TranslatableMixin
:noindex:
.. attribute:: locale
(Foreign Key to :class:`~wagtail.core.models.Locale`)
For pages, this defaults to the locale of the parent page.
.. attribute:: translation_key
(uuid)
A UUID that is randomly generated whenever a new model instance is created.
This is shared with all translations of that instance so can be used for querying translations.
.. automethod:: get_translations
.. automethod:: get_translation
.. automethod:: get_translation_or_none
.. automethod:: has_translation
.. automethod:: copy_for_translation
.. automethod:: get_translation_model
.. autoattribute:: localized
.. _page-revision-model-ref:
``PageRevision``
================
Every time a page is edited a new ``PageRevision`` is created and saved to the database. It can be used to find the full history of all changes that have been made to a page and it also provides a place for new changes to be kept before going live.
- Revisions can be created from any :class:`~wagtail.core.models.Page` object by calling its :meth:`~Page.save_revision` method
- The content of the page is JSON-serialised and stored in the :attr:`~PageRevision.content_json` field
- You can retrieve a ``PageRevision`` as a :class:`~wagtail.core.models.Page` object by calling the :meth:`~PageRevision.as_page_object` method
Database fields
~~~~~~~~~~~~~~~
.. class:: PageRevision
.. attribute:: page
(foreign key to :class:`~wagtail.core.models.Page`)
.. attribute:: submitted_for_moderation
(boolean)
``True`` if this revision is in moderation
.. attribute:: created_at
(date/time)
This is the time the revision was created
.. attribute:: user
(foreign key to user model)
This links to the user that created the revision
.. attribute:: content_json
(text)
This field contains the JSON content for the page at the time the revision was created
Managers
~~~~~~~~
.. class:: PageRevision
:noindex:
.. attribute:: objects
This manager is used to retrieve all of the ``PageRevision`` objects in the database
Example:
.. code-block:: python
PageRevision.objects.all()
.. attribute:: submitted_revisions
This manager is used to retrieve all of the ``PageRevision`` objects that are awaiting moderator approval
Example:
.. code-block:: python
PageRevision.submitted_revisions.all()
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: PageRevision
:noindex:
.. automethod:: as_page_object
This method retrieves this revision as an instance of its :class:`~wagtail.core.models.Page` subclass.
.. automethod:: approve_moderation
Calling this on a revision that's in moderation will mark it as approved and publish it
.. automethod:: reject_moderation
Calling this on a revision that's in moderation will mark it as rejected
.. automethod:: is_latest_revision
Returns ``True`` if this revision is its page's latest revision
.. automethod:: publish
Calling this will copy the content of this revision into the live page object. If the page is in draft, it will be published.
``GroupPagePermission``
=======================
Database fields
~~~~~~~~~~~~~~~
.. class:: GroupPagePermission
.. attribute:: group
(foreign key to ``django.contrib.auth.models.Group``)
.. attribute:: page
(foreign key to :class:`~wagtail.core.models.Page`)
.. attribute:: permission_type
(choice list)
``PageViewRestriction``
=======================
Database fields
~~~~~~~~~~~~~~~
.. class:: PageViewRestriction
.. attribute:: page
(foreign key to :class:`~wagtail.core.models.Page`)
.. attribute:: password
(text)
``Orderable`` (abstract)
========================
Database fields
~~~~~~~~~~~~~~~
.. class:: Orderable
.. attribute:: sort_order
(number)
``Workflow``
============
Workflows represent sequences of tasks which much be approved for an action to be performed on a page - typically publication.
Database fields
~~~~~~~~~~~~~~~
.. class:: Workflow
.. attribute:: name
(text)
Human-readable name of the workflow.
.. attribute:: active
(boolean)
Whether or not the workflow is active: active workflows can be added to pages, and started. Inactive workflows cannot.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: Workflow
:noindex:
.. automethod:: start
.. autoattribute:: tasks
.. automethod:: deactivate
.. automethod:: all_pages
``WorkflowState``
=================
Workflow states represent the status of a started workflow on a page.
Database fields
~~~~~~~~~~~~~~~
.. class:: WorkflowState
.. attribute:: page
(foreign key to ``Page``)
The page on which the workflow has been started
.. attribute:: workflow
(foreign key to ``Workflow``)
The workflow whose state the ``WorkflowState`` represents
.. attribute:: status
(text)
The current status of the workflow (options are ``WorkflowState.STATUS_CHOICES``)
.. attribute:: created_at
(date/time)
When this instance of ``WorkflowState`` was created - when the workflow was started
.. attribute:: requested_by
(foreign key to user model)
The user who started this workflow
.. attribute:: current_task_state
(foreign key to ``TaskState``)
The ``TaskState`` model for the task the workflow is currently at: either completing (if in progress) or the final task state (if finished)
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: WorkflowState
:noindex:
.. attribute:: STATUS_CHOICES
A tuple of the possible options for the ``status`` field, and their verbose names. Options are ``STATUS_IN_PROGRESS``, ``STATUS_APPROVED``,
``STATUS_CANCELLED`` and ``STATUS_NEEDS_CHANGES``.
.. automethod:: update
.. automethod:: get_next_task
.. automethod:: cancel
.. automethod:: finish
.. automethod:: resume
.. automethod:: copy_approved_task_states_to_revision
.. automethod:: all_tasks_with_status
.. automethod:: revisions
``Task``
========
Tasks represent stages in a workflow which must be approved for the workflow to complete successfully.
Database fields
~~~~~~~~~~~~~~~
.. class:: Task
.. attribute:: name
(text)
Human-readable name of the task.
.. attribute:: active
(boolean)
Whether or not the task is active: active workflows can be added to workflows, and started. Inactive workflows cannot, and are skipped when in
an existing workflow.
.. attribute:: content_type
(foreign key to ``django.contrib.contenttypes.models.ContentType``)
A foreign key to the :class:`~django.contrib.contenttypes.models.ContentType` object that represents the specific model of this task.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: Task
:noindex:
.. autoattribute:: workflows
.. autoattribute:: active_workflows
.. attribute:: task_state_class
The specific task state class to generate to store state information for this task. If not specified, this will be ``TaskState``.
.. automethod:: get_verbose_name
.. autoattribute:: specific
.. automethod:: start
.. automethod:: on_action
.. automethod:: user_can_access_editor
.. automethod:: user_can_lock
.. automethod:: user_can_unlock
.. automethod:: page_locked_for_user
.. automethod:: get_actions
.. automethod:: get_task_states_user_can_moderate
.. automethod:: deactivate
.. automethod:: get_form_for_action
.. automethod:: get_template_for_action
.. automethod:: get_description
``TaskState``
=============
Task states store state information about the progress of a task on a particular page revision.
Database fields
~~~~~~~~~~~~~~~
.. class:: TaskState
.. attribute:: workflow_state
(foreign key to ``WorkflowState``)
The workflow state which started this task state.
.. attribute:: page revision
(foreign key to ``PageRevision``)
The page revision this task state was created on.
.. attribute:: task
(foreign key to ``Task``)
The task that this task state is storing state information for.
.. attribute:: status
(text)
The completion status of the task on this revision. Options are available in ``TaskState.STATUS_CHOICES``)
.. attribute:: content_type
(foreign key to ``django.contrib.contenttypes.models.ContentType``)
A foreign key to the :class:`~django.contrib.contenttypes.models.ContentType` object that represents the specific model of this task.
.. attribute:: started_at
(date/time)
When this task state was created.
.. attribute:: finished_at
(date/time)
When this task state was cancelled, rejected, or approved.
.. attribute:: finished_by
(foreign key to user model)
The user who completed (cancelled, rejected, approved) the task.
.. attribute:: comment
(text)
A text comment, typically added by a user when the task is completed.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: TaskState
:noindex:
.. attribute:: STATUS_CHOICES
A tuple of the possible options for the ``status`` field, and their verbose names. Options are ``STATUS_IN_PROGRESS``, ``STATUS_APPROVED``,
``STATUS_CANCELLED``, ``STATUS_REJECTED`` and ``STATUS_SKIPPED``.
.. attribute:: exclude_fields_in_copy
A list of fields not to copy when the ``TaskState.copy()`` method is called.
.. autoattribute:: specific
.. automethod:: approve
.. automethod:: reject
.. autoattribute:: task_type_started_at
.. automethod:: cancel
.. automethod:: copy
.. automethod:: get_comment
``WorkflowTask``
================
Represents the ordering of a task in a specific workflow.
Database fields
~~~~~~~~~~~~~~~
.. class:: WorkflowTask
.. attribute:: workflow
(foreign key to ``Workflow``)
.. attribute:: task
(foreign key to ``Task``)
.. attribute:: sort_order
(number)
The ordering of the task in the workflow.
``WorkflowPage``
================
Represents the assignment of a workflow to a page and its descendants.
Database fields
~~~~~~~~~~~~~~~
.. class:: WorkflowPage
.. attribute:: workflow
(foreign key to ``Workflow``)
.. attribute:: page
(foreign key to ``Page``)
``BaseLogEntry``
================
An abstract base class that represents a record of an action performed on an object.
Database fields
~~~~~~~~~~~~~~~
.. class:: BaseLogEntry
.. attribute:: content_type
(foreign key to ``django.contrib.contenttypes.models.ContentType``)
A foreign key to the :class:`~django.contrib.contenttypes.models.ContentType` object that represents the specific model of this model.
.. attribute:: label
(text)
The object title at the time of the entry creation
Note: Wagtail will attempt to use ``get_admin_display_title`` or the string representation of the object passed to :meth:`~LogEntryManger.log_action`
.. attribute:: user
(foreign key to user model)
A foreign key to the user that triggered the action.
.. attribute:: data_json
(text)
The JSON representation of any additional details for each action.
e.g. source page id and title when copying from a page. Or workflow id/name and next step id/name on a workflow transition
.. attribute:: timestamp
(date/time)
The date/time when the entry was created.
.. attribute:: content_changed
(boolean)
A boolean that can set to ``True`` when the content has changed.
.. attribute:: deleted
(boolean)
A boolean that can set to ``True`` when the object is deleted. Used to filter entries in the Site History report.
Methods and properties
~~~~~~~~~~~~~~~~~~~~~~
.. class:: BaseLogEntry
:noindex:
.. autoattribute:: user_display_name
.. autoattribute:: data
.. autoattribute:: comment
.. autoattribute:: object_verbose_name
.. automethod:: object_id
``PageLogEntry``
================
Represents a record of an action performed on an :class:`Page`, subclasses :class:`BaseLogEntry`.
Database fields
~~~~~~~~~~~~~~~
.. class:: PageLogEntry
.. attribute:: page
(foreign key to :class:`Page`)
A foreign key to the page the action is performed on.
.. attribute:: revision
(foreign key to :class:`PageRevision`)
A foreign key to the current page revision.