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+=====================
+The Django admin site
+=====================
+
+.. module:: django.contrib.admin
+ :synopsis: Django's admin site.
+
+One of the most powerful parts of Django is the automatic admin interface. It
+reads metadata in your model to provide a powerful and production-ready
+interface that content producers can immediately use to start adding content to
+the site. In this document, we discuss how to activate, use and customize
+Django's admin interface.
+
+.. admonition:: Note
+
+ The admin site has been refactored significantly since Django 0.96. This
+ document describes the newest version of the admin site, which allows for
+ much richer customization. If you follow the development of Django itself,
+ you may have heard this described as "newforms-admin."
+
+Overview
+========
+
+There are six steps in activating the Django admin site:
+
+ 1. Add ``'django.contrib.admin'`` to your :setting:`INSTALLED_APPS`
+ setting.
+
+ 2. Admin has two dependencies - ``django.contrib.auth`` and
+ ``django.contrib.contenttypes``. If these applications are not
+ in your :setting:`INSTALLED_APPS` list, add them.
+
+ 3. Determine which of your application's models should be editable in the
+ admin interface.
+
+ 4. For each of those models, optionally create a ``ModelAdmin`` class that
+ encapsulates the customized admin functionality and options for that
+ particular model.
+
+ 5. Instantiate an ``AdminSite`` and tell it about each of your models and
+ ``ModelAdmin`` classes.
+
+ 6. Hook the ``AdminSite`` instance into your URLconf.
+
+Other topics
+------------
+
+.. toctree::
+ :maxdepth: 1
+
+ actions
+ admindocs
+
+.. seealso::
+
+ For information about serving the media files (images, JavaScript, and CSS)
+ associated with the admin in production, see :ref:`serving-media-files`.
+
+``ModelAdmin`` objects
+======================
+
+.. class:: ModelAdmin
+
+The ``ModelAdmin`` class is the representation of a model in the admin
+interface. These are stored in a file named ``admin.py`` in your application.
+Let's take a look at a very simple example of the ``ModelAdmin``::
+
+ from django.contrib import admin
+ from myproject.myapp.models import Author
+
+ class AuthorAdmin(admin.ModelAdmin):
+ pass
+ admin.site.register(Author, AuthorAdmin)
+
+.. admonition:: Do you need a ``ModelAdmin`` object at all?
+
+ In the preceding example, the ``ModelAdmin`` class doesn't define any
+ custom values (yet). As a result, the default admin interface will be
+ provided. If you are happy with the default admin interface, you don't
+ need to define a ``ModelAdmin`` object at all -- you can register the
+ model class without providing a ``ModelAdmin`` description. The
+ preceding example could be simplified to::
+
+ from django.contrib import admin
+ from myproject.myapp.models import Author
+
+ admin.site.register(Author)
+
+``ModelAdmin`` Options
+----------------------
+
+The ``ModelAdmin`` is very flexible. It has several options for dealing with
+customizing the interface. All options are defined on the ``ModelAdmin``
+subclass::
+
+ class AuthorAdmin(admin.ModelAdmin):
+ date_hierarchy = 'pub_date'
+
+.. attribute:: ModelAdmin.date_hierarchy
+
+Set ``date_hierarchy`` to the name of a ``DateField`` or ``DateTimeField`` in
+your model, and the change list page will include a date-based drilldown
+navigation by that field.
+
+Example::
+
+ date_hierarchy = 'pub_date'
+
+.. attribute:: ModelAdmin.form
+
+By default a ``ModelForm`` is dynamically created for your model. It is used
+to create the form presented on both the add/change pages. You can easily
+provide your own ``ModelForm`` to override any default form behavior on the
+add/change pages.
+
+For an example see the section `Adding custom validation to the admin`_.
+
+.. attribute:: ModelAdmin.fieldsets
+
+Set ``fieldsets`` to control the layout of admin "add" and "change" pages.
+
+``fieldsets`` is a list of two-tuples, in which each two-tuple represents a
+``
`` on the admin form page. (A ```` is a "section" of the
+form.)
+
+The two-tuples are in the format ``(name, field_options)``, where ``name`` is a
+string representing the title of the fieldset and ``field_options`` is a
+dictionary of information about the fieldset, including a list of fields to be
+displayed in it.
+
+A full example, taken from the ``django.contrib.flatpages.FlatPage`` model::
+
+ class FlatPageAdmin(admin.ModelAdmin):
+ fieldsets = (
+ (None, {
+ 'fields': ('url', 'title', 'content', 'sites')
+ }),
+ ('Advanced options', {
+ 'classes': ('collapse',),
+ 'fields': ('enable_comments', 'registration_required', 'template_name')
+ }),
+ )
+
+This results in an admin page that looks like:
+
+ .. image:: _images/flatfiles_admin.png
+
+If ``fieldsets`` isn't given, Django will default to displaying each field
+that isn't an ``AutoField`` and has ``editable=True``, in a single fieldset,
+in the same order as the fields are defined in the model.
+
+The ``field_options`` dictionary can have the following keys:
+
+ * ``fields``
+ A tuple of field names to display in this fieldset. This key is
+ required.
+
+ Example::
+
+ {
+ 'fields': ('first_name', 'last_name', 'address', 'city', 'state'),
+ }
+
+ To display multiple fields on the same line, wrap those fields in
+ their own tuple. In this example, the ``first_name`` and ``last_name``
+ fields will display on the same line::
+
+ {
+ 'fields': (('first_name', 'last_name'), 'address', 'city', 'state'),
+ }
+
+ .. versionadded:: 1.2
+
+ ``fields`` can contain values defined in
+ :attr:`ModelAdmin.readonly_fields` to be displayed as read-only.
+
+ * ``classes``
+ A list containing extra CSS classes to apply to the fieldset.
+
+ Example::
+
+ {
+ 'classes': ['wide', 'extrapretty'],
+ }
+
+ Two useful classes defined by the default admin site stylesheet are
+ ``collapse`` and ``wide``. Fieldsets with the ``collapse`` style will
+ be initially collapsed in the admin and replaced with a small
+ "click to expand" link. Fieldsets with the ``wide`` style will be
+ given extra horizontal space.
+
+ * ``description``
+ A string of optional extra text to be displayed at the top of each
+ fieldset, under the heading of the fieldset.
+
+ Note that this value is *not* HTML-escaped when it's displayed in
+ the admin interface. This lets you include HTML if you so desire.
+ Alternatively you can use plain text and
+ ``django.utils.html.escape()`` to escape any HTML special
+ characters.
+
+.. attribute:: ModelAdmin.fields
+
+Use this option as an alternative to ``fieldsets`` if the layout does not
+matter and if you want to only show a subset of the available fields in the
+form. For example, you could define a simpler version of the admin form for
+the ``django.contrib.flatpages.FlatPage`` model as follows::
+
+ class FlatPageAdmin(admin.ModelAdmin):
+ fields = ('url', 'title', 'content')
+
+In the above example, only the fields 'url', 'title' and 'content' will be
+displayed, sequentially, in the form.
+
+.. versionadded:: 1.2
+
+``fields`` can contain values defined in :attr:`ModelAdmin.readonly_fields`
+to be displayed as read-only.
+
+.. admonition:: Note
+
+ This ``fields`` option should not be confused with the ``fields``
+ dictionary key that is within the ``fieldsets`` option, as described in
+ the previous section.
+
+.. attribute:: ModelAdmin.exclude
+
+This attribute, if given, should be a list of field names to exclude from the
+form.
+
+For example, let's consider the following model::
+
+ class Author(models.Model):
+ name = models.CharField(max_length=100)
+ title = models.CharField(max_length=3)
+ birth_date = models.DateField(blank=True, null=True)
+
+If you want a form for the ``Author`` model that includes only the ``name``
+and ``title`` fields, you would specify ``fields`` or ``exclude`` like this::
+
+ class AuthorAdmin(admin.ModelAdmin):
+ fields = ('name', 'title')
+
+ class AuthorAdmin(admin.ModelAdmin):
+ exclude = ('birth_date',)
+
+Since the Author model only has three fields, ``name``, ``title``, and
+``birth_date``, the forms resulting from the above declarations will contain
+exactly the same fields.
+
+.. attribute:: ModelAdmin.filter_horizontal
+
+Use a nifty unobtrusive JavaScript "filter" interface instead of the
+usability-challenged ```` in the admin form. The value is a
+list of fields that should be displayed as a horizontal filter interface. See
+``filter_vertical`` to use a vertical interface.
+
+.. attribute:: ModelAdmin.filter_vertical
+
+Same as ``filter_horizontal``, but is a vertical display of the filter
+interface.
+
+.. attribute:: ModelAdmin.list_display
+
+Set ``list_display`` to control which fields are displayed on the change list
+page of the admin.
+
+Example::
+
+ list_display = ('first_name', 'last_name')
+
+If you don't set ``list_display``, the admin site will display a single column
+that displays the ``__unicode__()`` representation of each object.
+
+You have four possible values that can be used in ``list_display``:
+
+ * A field of the model. For example::
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = ('first_name', 'last_name')
+
+ * A callable that accepts one parameter for the model instance. For
+ example::
+
+ def upper_case_name(obj):
+ return ("%s %s" % (obj.first_name, obj.last_name)).upper()
+ upper_case_name.short_description = 'Name'
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = (upper_case_name,)
+
+ * A string representing an attribute on the ``ModelAdmin``. This behaves
+ same as the callable. For example::
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = ('upper_case_name',)
+
+ def upper_case_name(self, obj):
+ return ("%s %s" % (obj.first_name, obj.last_name)).upper()
+ upper_case_name.short_description = 'Name'
+
+ * A string representing an attribute on the model. This behaves almost
+ the same as the callable, but ``self`` in this context is the model
+ instance. Here's a full model example::
+
+ class Person(models.Model):
+ name = models.CharField(max_length=50)
+ birthday = models.DateField()
+
+ def decade_born_in(self):
+ return self.birthday.strftime('%Y')[:3] + "0's"
+ decade_born_in.short_description = 'Birth decade'
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = ('name', 'decade_born_in')
+
+A few special cases to note about ``list_display``:
+
+ * If the field is a ``ForeignKey``, Django will display the
+ ``__unicode__()`` of the related object.
+
+ * ``ManyToManyField`` fields aren't supported, because that would entail
+ executing a separate SQL statement for each row in the table. If you
+ want to do this nonetheless, give your model a custom method, and add
+ that method's name to ``list_display``. (See below for more on custom
+ methods in ``list_display``.)
+
+ * If the field is a ``BooleanField`` or ``NullBooleanField``, Django will
+ display a pretty "on" or "off" icon instead of ``True`` or ``False``.
+
+ * If the string given is a method of the model, ``ModelAdmin`` or a
+ callable, Django will HTML-escape the output by default. If you'd rather
+ not escape the output of the method, give the method an ``allow_tags``
+ attribute whose value is ``True``.
+
+ Here's a full example model::
+
+ class Person(models.Model):
+ first_name = models.CharField(max_length=50)
+ last_name = models.CharField(max_length=50)
+ color_code = models.CharField(max_length=6)
+
+ def colored_name(self):
+ return '%s %s ' % (self.color_code, self.first_name, self.last_name)
+ colored_name.allow_tags = True
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = ('first_name', 'last_name', 'colored_name')
+
+ * If the string given is a method of the model, ``ModelAdmin`` or a
+ callable that returns True or False Django will display a pretty "on" or
+ "off" icon if you give the method a ``boolean`` attribute whose value is
+ ``True``.
+
+ Here's a full example model::
+
+ class Person(models.Model):
+ first_name = models.CharField(max_length=50)
+ birthday = models.DateField()
+
+ def born_in_fifties(self):
+ return self.birthday.strftime('%Y')[:3] == '195'
+ born_in_fifties.boolean = True
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = ('name', 'born_in_fifties')
+
+
+ * The ``__str__()`` and ``__unicode__()`` methods are just as valid in
+ ``list_display`` as any other model method, so it's perfectly OK to do
+ this::
+
+ list_display = ('__unicode__', 'some_other_field')
+
+ * Usually, elements of ``list_display`` that aren't actual database fields
+ can't be used in sorting (because Django does all the sorting at the
+ database level).
+
+ However, if an element of ``list_display`` represents a certain database
+ field, you can indicate this fact by setting the ``admin_order_field``
+ attribute of the item.
+
+ For example::
+
+ class Person(models.Model):
+ first_name = models.CharField(max_length=50)
+ color_code = models.CharField(max_length=6)
+
+ def colored_first_name(self):
+ return '%s ' % (self.color_code, self.first_name)
+ colored_first_name.allow_tags = True
+ colored_first_name.admin_order_field = 'first_name'
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = ('first_name', 'colored_first_name')
+
+ The above will tell Django to order by the ``first_name`` field when
+ trying to sort by ``colored_first_name`` in the admin.
+
+.. attribute:: ModelAdmin.list_display_links
+
+Set ``list_display_links`` to control which fields in ``list_display`` should
+be linked to the "change" page for an object.
+
+By default, the change list page will link the first column -- the first field
+specified in ``list_display`` -- to the change page for each item. But
+``list_display_links`` lets you change which columns are linked. Set
+``list_display_links`` to a list or tuple of field names (in the same format as
+``list_display``) to link.
+
+``list_display_links`` can specify one or many field names. As long as the
+field names appear in ``list_display``, Django doesn't care how many (or how
+few) fields are linked. The only requirement is: If you want to use
+``list_display_links``, you must define ``list_display``.
+
+In this example, the ``first_name`` and ``last_name`` fields will be linked on
+the change list page::
+
+ class PersonAdmin(admin.ModelAdmin):
+ list_display = ('first_name', 'last_name', 'birthday')
+ list_display_links = ('first_name', 'last_name')
+
+.. _admin-list-editable:
+
+.. attribute:: ModelAdmin.list_editable
+
+.. versionadded:: 1.1
+
+Set ``list_editable`` to a list of field names on the model which will allow
+editing on the change list page. That is, fields listed in ``list_editable``
+will be displayed as form widgets on the change list page, allowing users to
+edit and save multiple rows at once.
+
+.. note::
+
+ ``list_editable`` interacts with a couple of other options in particular
+ ways; you should note the following rules:
+
+ * Any field in ``list_editable`` must also be in ``list_display``. You
+ can't edit a field that's not displayed!
+
+ * The same field can't be listed in both ``list_editable`` and
+ ``list_display_links`` -- a field can't be both a form and a link.
+
+ You'll get a validation error if either of these rules are broken.
+
+.. attribute:: ModelAdmin.list_filter
+
+Set ``list_filter`` to activate filters in the right sidebar of the change list
+page of the admin. This should be a list of field names, and each specified
+field should be either a ``BooleanField``, ``CharField``, ``DateField``,
+``DateTimeField``, ``IntegerField`` or ``ForeignKey``.
+
+This example, taken from the ``django.contrib.auth.models.User`` model, shows
+how both ``list_display`` and ``list_filter`` work::
+
+ class UserAdmin(admin.ModelAdmin):
+ list_display = ('username', 'email', 'first_name', 'last_name', 'is_staff')
+ list_filter = ('is_staff', 'is_superuser')
+
+The above code results in an admin change list page that looks like this:
+
+ .. image:: _images/users_changelist.png
+
+(This example also has ``search_fields`` defined. See below.)
+
+.. attribute:: ModelAdmin.list_per_page
+
+Set ``list_per_page`` to control how many items appear on each paginated admin
+change list page. By default, this is set to ``100``.
+
+.. attribute:: ModelAdmin.list_select_related
+
+Set ``list_select_related`` to tell Django to use
+:meth:`~django.db.models.QuerySet.select_related` in retrieving the list of
+objects on the admin change list page. This can save you a bunch of database
+queries.
+
+The value should be either ``True`` or ``False``. Default is ``False``.
+
+Note that Django will use :meth:`~django.db.models.QuerySet.select_related`,
+regardless of this setting, if one of the ``list_display`` fields is a
+``ForeignKey``.
+
+.. attribute:: ModelAdmin.inlines
+
+See ``InlineModelAdmin`` objects below.
+
+.. attribute:: ModelAdmin.ordering
+
+Set ``ordering`` to specify how objects on the admin change list page should be
+ordered. This should be a list or tuple in the same format as a model's
+``ordering`` parameter.
+
+If this isn't provided, the Django admin will use the model's default ordering.
+
+.. admonition:: Note
+
+ Django will only honor the first element in the list/tuple; any others
+ will be ignored.
+
+.. attribute:: ModelAdmin.prepopulated_fields
+
+Set ``prepopulated_fields`` to a dictionary mapping field names to the fields
+it should prepopulate from::
+
+ class ArticleAdmin(admin.ModelAdmin):
+ prepopulated_fields = {"slug": ("title",)}
+
+When set, the given fields will use a bit of JavaScript to populate from the
+fields assigned. The main use for this functionality is to automatically
+generate the value for ``SlugField`` fields from one or more other fields. The
+generated value is produced by concatenating the values of the source fields,
+and then by transforming that result into a valid slug (e.g. substituting
+dashes for spaces).
+
+``prepopulated_fields`` doesn't accept ``DateTimeField``, ``ForeignKey``, nor
+``ManyToManyField`` fields.
+
+.. attribute:: ModelAdmin.radio_fields
+
+By default, Django's admin uses a select-box interface () for
+fields that are ``ForeignKey`` or have ``choices`` set. If a field is present
+in ``radio_fields``, Django will use a radio-button interface instead.
+Assuming ``group`` is a ``ForeignKey`` on the ``Person`` model::
+
+ class PersonAdmin(admin.ModelAdmin):
+ radio_fields = {"group": admin.VERTICAL}
+
+You have the choice of using ``HORIZONTAL`` or ``VERTICAL`` from the
+``django.contrib.admin`` module.
+
+Don't include a field in ``radio_fields`` unless it's a ``ForeignKey`` or has
+``choices`` set.
+
+.. attribute:: ModelAdmin.raw_id_fields
+
+By default, Django's admin uses a select-box interface () for
+fields that are ``ForeignKey``. Sometimes you don't want to incur the
+overhead of having to select all the related instances to display in the
+drop-down.
+
+``raw_id_fields`` is a list of fields you would like to change
+into a ``Input`` widget for either a ``ForeignKey`` or ``ManyToManyField``::
+
+ class ArticleAdmin(admin.ModelAdmin):
+ raw_id_fields = ("newspaper",)
+
+.. attribute:: ModelAdmin.readonly_fields
+
+.. versionadded:: 1.2
+
+By default the admin shows all fields as editable. Any fields in this option
+(which should be a ``list`` or ``tuple``) will display its data as-is and
+non-editable. This option behaves nearly identical to :attr:`ModelAdmin.list_display`.
+Usage is the same, however, when you specify :attr:`ModelAdmin.fields` or
+:attr:`ModelAdmin.fieldsets` the read-only fields must be present to be shown
+(they are ignored otherwise).
+
+If ``readonly_fields`` is used without defining explicit ordering through
+:attr:`ModelAdmin.fields` or :attr:`ModelAdmin.fieldsets` they will be added
+last after all editable fields.
+
+.. attribute:: ModelAdmin.save_as
+
+Set ``save_as`` to enable a "save as" feature on admin change forms.
+
+Normally, objects have three save options: "Save", "Save and continue editing"
+and "Save and add another". If ``save_as`` is ``True``, "Save and add another"
+will be replaced by a "Save as" button.
+
+"Save as" means the object will be saved as a new object (with a new ID),
+rather than the old object.
+
+By default, ``save_as`` is set to ``False``.
+
+.. attribute:: ModelAdmin.save_on_top
+
+Set ``save_on_top`` to add save buttons across the top of your admin change
+forms.
+
+Normally, the save buttons appear only at the bottom of the forms. If you set
+``save_on_top``, the buttons will appear both on the top and the bottom.
+
+By default, ``save_on_top`` is set to ``False``.
+
+.. attribute:: ModelAdmin.search_fields
+
+Set ``search_fields`` to enable a search box on the admin change list page.
+This should be set to a list of field names that will be searched whenever
+somebody submits a search query in that text box.
+
+These fields should be some kind of text field, such as ``CharField`` or
+``TextField``. You can also perform a related lookup on a ``ForeignKey`` or
+``ManyToManyField`` with the lookup API "follow" notation::
+
+ search_fields = ['foreign_key__related_fieldname']
+
+For example, if you have a blog entry with an author, the following definition
+would enable search blog entries by the email address of the author::
+
+ search_fields = ['user__email']
+
+When somebody does a search in the admin search box, Django splits the search
+query into words and returns all objects that contain each of the words, case
+insensitive, where each word must be in at least one of ``search_fields``. For
+example, if ``search_fields`` is set to ``['first_name', 'last_name']`` and a
+user searches for ``john lennon``, Django will do the equivalent of this SQL
+``WHERE`` clause::
+
+ WHERE (first_name ILIKE '%john%' OR last_name ILIKE '%john%')
+ AND (first_name ILIKE '%lennon%' OR last_name ILIKE '%lennon%')
+
+For faster and/or more restrictive searches, prefix the field name
+with an operator:
+
+``^``
+ Matches the beginning of the field. For example, if ``search_fields`` is
+ set to ``['^first_name', '^last_name']`` and a user searches for
+ ``john lennon``, Django will do the equivalent of this SQL ``WHERE``
+ clause::
+
+ WHERE (first_name ILIKE 'john%' OR last_name ILIKE 'john%')
+ AND (first_name ILIKE 'lennon%' OR last_name ILIKE 'lennon%')
+
+ This query is more efficient than the normal ``'%john%'`` query, because
+ the database only needs to check the beginning of a column's data, rather
+ than seeking through the entire column's data. Plus, if the column has an
+ index on it, some databases may be able to use the index for this query,
+ even though it's a ``LIKE`` query.
+
+``=``
+ Matches exactly, case-insensitive. For example, if
+ ``search_fields`` is set to ``['=first_name', '=last_name']`` and
+ a user searches for ``john lennon``, Django will do the equivalent
+ of this SQL ``WHERE`` clause::
+
+ WHERE (first_name ILIKE 'john' OR last_name ILIKE 'john')
+ AND (first_name ILIKE 'lennon' OR last_name ILIKE 'lennon')
+
+ Note that the query input is split by spaces, so, following this example,
+ it's currently not possible to search for all records in which
+ ``first_name`` is exactly ``'john winston'`` (containing a space).
+
+``@``
+ Performs a full-text match. This is like the default search method but uses
+ an index. Currently this is only available for MySQL.
+
+.. attribute:: ModelAdmin.formfield_overrides
+
+.. versionadded:: 1.1
+
+This provides a quick-and-dirty way to override some of the
+:class:`~django.forms.Field` options for use in the admin.
+``formfield_overrides`` is a dictionary mapping a field class to a dict of
+arguments to pass to the field at construction time.
+
+Since that's a bit abstract, let's look at a concrete example. The most common
+use of ``formfield_overrides`` is to add a custom widget for a certain type of
+field. So, imagine we've written a ``RichTextEditorWidget`` that we'd like to
+use for large text fields instead of the default ``