Commit fa546046 authored by Claude Paroz's avatar Claude Paroz
Browse files

[1.5.x] Fixed #19423 -- Prevented ModelAdmin sharing widgets due to formfield_overrides 

Thanks joebuyer at manycycles.com for the report and Simon Charette
for the review.
Backport of 04e6542b from master.
parent 9af9cdb3

django/contrib/admin/options.py

+2 −1
Original line number Diff line number Diff line 
import copy

from functools import update_wrapper, partial

import warnings
@@ -130,7 +131,7 @@ class BaseModelAdmin(six.with_metaclass(forms.MediaDefiningClass)): 
        # passed to formfield_for_dbfield override the defaults.

        for klass in db_field.__class__.mro():

            if klass in self.formfield_overrides:

                kwargs = dict(self.formfield_overrides[klass], **kwargs)

                kwargs = dict(copy.deepcopy(self.formfield_overrides[klass]), **kwargs)

                return db_field.formfield(**kwargs)



        # For any other type of field, just call its formfield() method.

tests/regressiontests/admin_widgets/models.py

+1 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ class Member(models.Model): 
@python_2_unicode_compatible

class Band(models.Model):

    name = models.CharField(max_length=100)

    style = models.CharField(max_length=20)

    members = models.ManyToManyField(Member)



    def __str__(self):

tests/regressiontests/admin_widgets/tests.py

+18 −1
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ from django.contrib.admin import widgets 
from django.contrib.admin.tests import AdminSeleniumWebDriverTestCase

from django.core.files.storage import default_storage

from django.core.files.uploadedfile import SimpleUploadedFile

from django.db.models import DateField

from django.db.models import CharField, DateField

from django.test import TestCase as DjangoTestCase

from django.test.utils import override_settings

from django.utils import translation
@@ -112,6 +112,23 @@ class AdminFormfieldForDBFieldTests(TestCase): 
        self.assertFormfield(models.Event, 'start_date', forms.TextInput,

                             formfield_overrides={DateField: {'widget': forms.TextInput}})



    def testFormfieldOverridesWidgetInstances(self):

        """

        Test that widget instances in formfield_overrides are not shared between

        different fields. (#19423)

        """

        class BandAdmin(admin.ModelAdmin):

            formfield_overrides = {

                CharField: {'widget': forms.TextInput(attrs={'size':'10'})}

            }

        ma = BandAdmin(models.Band, admin.site)

        f1 = ma.formfield_for_dbfield(models.Band._meta.get_field('name'), request=None)

        f2 = ma.formfield_for_dbfield(models.Band._meta.get_field('style'), request=None)

        self.assertNotEqual(f1.widget, f2.widget)

        self.assertEqual(f1.widget.attrs['maxlength'], '100')

        self.assertEqual(f2.widget.attrs['maxlength'], '20')

        self.assertEqual(f2.widget.attrs['size'], '10')



    def testFieldWithChoices(self):

        self.assertFormfield(models.Member, 'gender', forms.Select)