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Fixed #20702 -- Deprecated get_formsets in favor of get_formsets_with_inlines. 

Thanks stanislas.guerra at gmail.com for the report.
This commit is contained in:
tschilling 2013-09-03 21:01:45 -04:00 committed by Tim Graham
parent f8f47718ab
commit 0d1ba84d13
6 changed files with 180 additions and 26 deletions
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59
django/contrib/admin/options.py
View File

@ -602,10 +602,48 @@ class ModelAdmin(BaseModelAdmin):
self.get_changelist_form(request), extra=0,
fields=self.list_editable, **defaults)
def get_formsets(self, request, obj=None):
def _get_formsets(self, request, obj):
"""
Helper function that exists to allow the deprecation warning to be
executed while this function continues to return a generator.
"""
for inline in self.get_inline_instances(request, obj):
yield inline.get_formset(request, obj)
def get_formsets(self, request, obj=None):
warnings.warn(
"ModelAdmin.get_formsets() is deprecated and will be removed in "
"Django 1.9. Use ModelAdmin.get_formsets_with_inlines() instead.",
PendingDeprecationWarning, stacklevel=2
)
return self._get_formsets(request, obj)
def get_formsets_with_inlines(self, request, obj=None):
"""
Yields formsets and the corresponding inlines.
"""
# We call get_formsets() [deprecated] and check if it triggers a
# warning. If it does, then it's ours and we can safely ignore it, but
# if it doesn't then it has been overridden so we must warn about the
# deprecation.
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
formsets = self.get_formsets(request, obj)
if len(w) != 1 or not issubclass(w[0].category, PendingDeprecationWarning):
warnings.warn(
"ModelAdmin.get_formsets() is deprecated and will be removed in "
"Django 1.9. Use ModelAdmin.get_formsets_with_inlines() instead.",
PendingDeprecationWarning
)
if formsets:
zipped = zip(formsets, self.get_inline_instances(request, None))
for formset, inline in zipped:
yield formset, inline
else:
for inline in self.get_inline_instances(request, obj):
yield inline.get_formset(request, obj), inline
def get_paginator(self, request, queryset, per_page, orphans=0, allow_empty_first_page=True):
return self.paginator(queryset, per_page, orphans, allow_empty_first_page)
@ -1185,8 +1223,6 @@ class ModelAdmin(BaseModelAdmin):
raise PermissionDenied
ModelForm = self.get_form(request)
formsets = []
inline_instances = self.get_inline_instances(request, None)
if request.method == 'POST':
form = ModelForm(request.POST, request.FILES)
if form.is_valid():
@ -1195,7 +1231,7 @@ class ModelAdmin(BaseModelAdmin):
else:
form_validated = False
new_object = self.model()
formsets = self._create_formsets(request, new_object, inline_instances)
formsets, inline_instances = self._create_formsets(request, new_object)
if all_valid(formsets) and form_validated:
self.save_model(request, new_object, form, False)
self.save_related(request, form, formsets, False)
@ -1213,7 +1249,7 @@ class ModelAdmin(BaseModelAdmin):
if isinstance(f, models.ManyToManyField):
initial[k] = initial[k].split(",")
form = ModelForm(initial=initial)
formsets = self._create_formsets(request, self.model(), inline_instances)
formsets, inline_instances = self._create_formsets(request, self.model())
adminForm = helpers.AdminForm(form, list(self.get_fieldsets(request)),
self.get_prepopulated_fields(request),
@ -1266,7 +1302,6 @@ class ModelAdmin(BaseModelAdmin):
current_app=self.admin_site.name))
ModelForm = self.get_form(request, obj)
inline_instances = self.get_inline_instances(request, obj)
if request.method == 'POST':
form = ModelForm(request.POST, request.FILES, instance=obj)
if form.is_valid():
@ -1275,7 +1310,7 @@ class ModelAdmin(BaseModelAdmin):
else:
form_validated = False
new_object = obj
formsets = self._create_formsets(request, new_object, inline_instances)
formsets, inline_instances = self._create_formsets(request, new_object)
if all_valid(formsets) and form_validated:
self.save_model(request, new_object, form, True)
self.save_related(request, form, formsets, True)
@ -1285,7 +1320,7 @@ class ModelAdmin(BaseModelAdmin):
else:
form = ModelForm(instance=obj)
formsets = self._create_formsets(request, obj, inline_instances)
formsets, inline_instances = self._create_formsets(request, obj)
adminForm = helpers.AdminForm(form, self.get_fieldsets(request, obj),
self.get_prepopulated_fields(request, obj),
@ -1566,14 +1601,15 @@ class ModelAdmin(BaseModelAdmin):
"admin/object_history.html"
], context, current_app=self.admin_site.name)
def _create_formsets(self, request, obj, inline_instances):
def _create_formsets(self, request, obj):
"Helper function to generate formsets for add/change_view."
formsets = []
inline_instances = []
prefixes = {}
get_formsets_args = [request]
if obj.pk:
get_formsets_args.append(obj)
for FormSet, inline in zip(self.get_formsets(*get_formsets_args), inline_instances):
for FormSet, inline in self.get_formsets_with_inlines(*get_formsets_args):
prefix = FormSet.get_default_prefix()
prefixes[prefix] = prefixes.get(prefix, 0) + 1
if prefixes[prefix] != 1 or not prefix:
@ -1590,7 +1626,8 @@ class ModelAdmin(BaseModelAdmin):
'save_as_new': '_saveasnew' in request.POST
})
formsets.append(FormSet(**formset_params))
return formsets
inline_instances.append(inline)
return formsets, inline_instances
class InlineModelAdmin(BaseModelAdmin):

2
docs/internals/deprecation.txt
View File

@ -453,6 +453,8 @@ these changes.
* ``django.db.backends.util``
* ``django.forms.util``
* ``ModelAdmin.get_formsets`` will be removed.
2.0
---

23
docs/ref/contrib/admin/index.txt
View File

@ -454,7 +454,7 @@ subclass::
.. attribute:: ModelAdmin.inlines
See :class:`InlineModelAdmin` objects below as well as
:meth:`ModelAdmin.get_formsets`.
:meth:`ModelAdmin.get_formsets_with_inlines`.
.. attribute:: ModelAdmin.list_display
@ -1365,6 +1365,9 @@ templates used by the :class:`ModelAdmin` views:
.. method:: ModelAdmin.get_formsets(self, request, obj=None)
.. deprecated:: 1.7
Use :meth:`get_formsets_with_inlines()` instead.
Yields :class:`InlineModelAdmin`\s for use in admin add and change views.
For example if you wanted to display a particular inline only in the change
@ -1380,6 +1383,24 @@ templates used by the :class:`ModelAdmin` views:
continue
yield inline.get_formset(request, obj)
.. method:: ModelAdmin.get_formsets_with_inlines(self, request, obj=None)
Yields (``FormSet``, :class:`InlineModelAdmin`) pairs for use in admin add
and change views.
For example if you wanted to display a particular inline only in the change
view, you could override ``get_formsets_with_inlines`` as follows::
class MyModelAdmin(admin.ModelAdmin):
inlines = [MyInline, SomeOtherInline]
def get_formsets_with_inlines(self, request, obj=None):
for inline in self.get_inline_instances(request, obj):
# hide MyInline in the add view
if isinstance(inline, MyInline) and obj is None:
continue
yield inline.get_formset(request, obj), inline
.. method:: ModelAdmin.formfield_for_foreignkey(self, db_field, request, **kwargs)
The ``formfield_for_foreignkey`` method on a ``ModelAdmin`` allows you to

19
docs/releases/1.7.txt
View File

@ -466,13 +466,13 @@ than simply ``myapp/models.py``, Django would look for :ref:`initial SQL data
will search ``myapp/sql/`` as documented. The old location will continue to
work until Django 1.9.
``declared_fieldsets`` attribute on ``ModelAdmin.``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
``declared_fieldsets`` attribute on ``ModelAdmin``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
``ModelAdmin.declared_fieldsets`` was deprecated. Despite being a private API,
it will go through a regular deprecation path. This attribute was mostly used
by methods that bypassed ``ModelAdmin.get_fieldsets()`` but this was considered
a bug and has been addressed.
``ModelAdmin.declared_fieldsets`` has been deprecated. Despite being a private
API, it will go through a regular deprecation path. This attribute was mostly
used by methods that bypassed ``ModelAdmin.get_fieldsets()`` but this was
considered a bug and has been addressed.
``syncdb``
~~~~~~~~~~
@ -491,3 +491,10 @@ to ``utils.py`` in an effort to unify all util and utils references:
* ``django.contrib.gis.db.backends.util``
* ``django.db.backends.util``
* ``django.forms.util``
``get_formsets`` method on ``ModelAdmin``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
``ModelAdmin.get_formsets`` has been deprecated in favor of the new
:meth:`~django.contrib.admin.ModelAdmin.get_formsets_with_inlines`, in order to
better handle the case of selecting showing inlines on a ``ModelAdmin``.

93
tests/generic_inline_admin/tests.py
View File

@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import warnings
from django.conf import settings
from django.contrib import admin
@ -277,7 +278,7 @@ class GenericInlineModelAdminTest(TestCase):
ma = EpisodeAdmin(Episode, self.site)
self.assertEqual(
list(list(ma.get_formsets(request))[0]().forms[0].fields),
list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
['keywords', 'id', 'DELETE'])
def test_custom_form_meta_exclude(self):
@ -307,7 +308,7 @@ class GenericInlineModelAdminTest(TestCase):
ma = EpisodeAdmin(Episode, self.site)
self.assertEqual(
list(list(ma.get_formsets(request))[0]().forms[0].fields),
list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
['url', 'keywords', 'id', 'DELETE'])
# Then, only with `ModelForm` -----------------
@ -323,7 +324,7 @@ class GenericInlineModelAdminTest(TestCase):
ma = EpisodeAdmin(Episode, self.site)
self.assertEqual(
list(list(ma.get_formsets(request))[0]().forms[0].fields),
list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
['description', 'keywords', 'id', 'DELETE'])
def test_get_fieldsets(self):
@ -345,3 +346,89 @@ class GenericInlineModelAdminTest(TestCase):
ma = MediaInline(Media, self.site)
form = ma.get_formset(None).form
self.assertEqual(form._meta.fields, ['url', 'description'])
def test_get_formsets_with_inlines(self):
"""
get_formsets() triggers a deprecation warning when get_formsets is
overridden.
"""
class MediaForm(ModelForm):
class Meta:
model = Media
exclude = ['url']
class MediaInline(GenericTabularInline):
exclude = ['description']
form = MediaForm
model = Media
class EpisodeAdmin(admin.ModelAdmin):
inlines = [
MediaInline
]
def get_formsets(self, request, obj=None):
return []
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
ma = EpisodeAdmin(Episode, self.site)
list(ma.get_formsets_with_inlines(request))
# Verify that the deprecation warning was triggered when get_formsets was called
# This verifies that we called that method.
self.assertEqual(len(w), 1)
self.assertTrue(issubclass(w[0].category, PendingDeprecationWarning))
class EpisodeAdmin(admin.ModelAdmin):
inlines = [
MediaInline
]
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
ma = EpisodeAdmin(Episode, self.site)
list(ma.get_formsets_with_inlines(request))
self.assertEqual(len(w), 0)
def test_get_formsets_with_inlines_returns_tuples(self):
"""
Ensure that get_formsets_with_inlines() returns the correct tuples.
"""
class MediaForm(ModelForm):
class Meta:
model = Media
exclude = ['url']
class MediaInline(GenericTabularInline):
form = MediaForm
model = Media
class AlternateInline(GenericTabularInline):
form = MediaForm
model = Media
class EpisodeAdmin(admin.ModelAdmin):
inlines = [
AlternateInline, MediaInline
]
ma = EpisodeAdmin(Episode, self.site)
inlines = ma.get_inline_instances(request)
for (formset, inline), other_inline in zip(ma.get_formsets_with_inlines(request), inlines):
self.assertIsInstance(formset, other_inline.get_formset(request).__class__)
class EpisodeAdmin(admin.ModelAdmin):
inlines = [
AlternateInline, MediaInline
]
def get_formsets(self, request, obj=None):
# Catch the deprecation warning to force the usage of get_formsets
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
return super(EpisodeAdmin, self).get_formsets(request, obj)
ma = EpisodeAdmin(Episode, self.site)
inlines = ma.get_inline_instances(request)
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
for (formset, inline), other_inline in zip(ma.get_formsets_with_inlines(request), inlines):
self.assertIsInstance(formset, other_inline.get_formset(request).__class__)

8
tests/modeladmin/tests.py
View File

@ -207,7 +207,7 @@ class ModelAdminTests(TestCase):
ma = BandAdmin(Band, self.site)
self.assertEqual(
list(list(ma.get_formsets(request))[0]().forms[0].fields),
list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
['main_band', 'opening_band', 'id', 'DELETE'])
def test_custom_form_meta_exclude(self):
@ -253,7 +253,7 @@ class ModelAdminTests(TestCase):
ma = BandAdmin(Band, self.site)
self.assertEqual(
list(list(ma.get_formsets(request))[0]().forms[0].fields),
list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
['main_band', 'opening_band', 'day', 'id', 'DELETE'])
def test_custom_form_validation(self):
@ -327,7 +327,7 @@ class ModelAdminTests(TestCase):
ma = BandAdmin(Band, self.site)
self.assertEqual(
list(list(ma.get_formsets(request))[0]().forms[0].fields),
list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
['main_band', 'day', 'transport', 'id', 'DELETE'])
def test_queryset_override(self):
@ -521,7 +521,7 @@ class ModelAdminTests(TestCase):
ma = BandAdmin(Band, self.site)
self.assertEqual(
list(list(ma.get_formsets(request))[0]().forms[0].fields),
list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
['extra', 'transport', 'id', 'DELETE', 'main_band'])