[1.1.X] Fixed #12561. InlineAdmin now respects can_delete=False. Backport of [12533] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12534 bcc190cf-cafb-0310-a4f2-bffc1f526a37

AUTHORS

@@ -68,7 +68,7 @@ answer newbie questions, and generally made Django that much better:
     James Bennett
     Julian Bez
     Arvis Bickovskis <viestards.lists@gmail.com>
-    Natalia Bidart
+    Natalia Bidart <nataliabidart@gmail.com>
     Paul Bissex <http://e-scribe.com/>
     Simon Blanchard
     David Blewett <david@dawninglight.net>

django/contrib/admin/options.py

@@ -1121,6 +1121,7 @@ class InlineModelAdmin(BaseModelAdmin):
     template = None
     verbose_name = None
     verbose_name_plural = None
+    can_delete = True
 
     def __init__(self, parent_model, admin_site):
         self.admin_site = admin_site
@@ -1163,6 +1164,7 @@ class InlineModelAdmin(BaseModelAdmin):
             "formfield_callback": curry(self.formfield_for_dbfield, request=request),
             "extra": self.extra,
             "max_num": self.max_num,
+            "can_delete": self.can_delete,
         }
         defaults.update(kwargs)
         return inlineformset_factory(self.parent_model, self.model, **defaults)

django/contrib/contenttypes/generic.py

@@ -386,7 +386,7 @@ class GenericInlineModelAdmin(InlineModelAdmin):
             "formfield_callback": self.formfield_for_dbfield,
             "formset": self.formset,
             "extra": self.extra,
-            "can_delete": True,
+            "can_delete": self.can_delete,
             "can_order": False,
             "fields": fields,
             "max_num": self.max_num,

tests/regressiontests/admin_inlines/fixtures/admin-views-users.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<django-objects version="1.0">
+    <object pk="100" model="auth.user">
+        <field type="CharField" name="username">super</field>
+        <field type="CharField" name="first_name">Super</field>
+        <field type="CharField" name="last_name">User</field>
+        <field type="CharField" name="email">super@example.com</field>
+        <field type="CharField" name="password">sha1$995a3$6011485ea3834267d719b4c801409b8b1ddd0158</field>
+        <field type="BooleanField" name="is_staff">True</field>
+        <field type="BooleanField" name="is_active">True</field>
+        <field type="BooleanField" name="is_superuser">True</field>
+        <field type="DateTimeField" name="last_login">2007-05-30 13:20:10</field>
+        <field type="DateTimeField" name="date_joined">2007-05-30 13:20:10</field>
+        <field to="auth.group" name="groups" rel="ManyToManyRel"></field>
+        <field to="auth.permission" name="user_permissions" rel="ManyToManyRel"></field>
+    </object>
+</django-objects>

tests/regressiontests/admin_inlines/models.py

@@ -3,6 +3,7 @@ Testing of admin inline formsets.
 
 """
 from django.db import models
+from django.contrib import admin
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes import generic
 
@@ -29,6 +30,24 @@ class Child(models.Model):
     def __unicode__(self):
         return u'I am %s, a child of %s' % (self.name, self.parent)
 
+
+class Holder(models.Model):
+    dummy = models.IntegerField()
+
+
+class Inner(models.Model):
+    dummy = models.IntegerField()
+    holder = models.ForeignKey(Holder)
+
+
+class InnerInline(admin.StackedInline):
+    model = Inner
+    can_delete = False
+
+
+# Test bug #12561
+admin.site.register(Holder, inlines=[InnerInline])
+
 __test__ = {'API_TESTS': """
 
 # Regression test for #9362
@@ -48,4 +67,4 @@ inline form.
 <Child: I am Joe, a child of John>
 
 """
-}
+}

tests/regressiontests/admin_inlines/tests.py

@@ -0,0 +1,30 @@
+from django.test import TestCase
+
+# local test models
+from models import Holder, Inner, InnerInline
+
+class TestInline(TestCase):
+    fixtures = ['admin-views-users.xml']
+
+    def setUp(self):
+        holder = Holder(dummy=13)
+        holder.save()
+        Inner(dummy=42, holder=holder).save()
+        self.change_url = '/test_admin/admin/admin_inlines/holder/%i/' % holder.id
+
+        result = self.client.login(username='super', password='secret')
+        self.failUnlessEqual(result, True)
+
+    def tearDown(self):
+        self.client.logout()
+
+    def test_can_delete(self):
+        """
+        can_delete should be passed to inlineformset factory.
+        """
+        response = self.client.get(self.change_url)
+        inner_formset = response.context[-1]['inline_admin_formsets'][0].formset
+        expected = InnerInline.can_delete
+        actual = inner_formset.can_delete
+        self.assertEqual(expected, actual, 'can_delete must be equal')
+

tests/regressiontests/generic_inline_admin/models.py

@@ -72,3 +72,15 @@ class MediaExcludeInline(generic.GenericTabularInline):
 
 admin.site.register(EpisodeExclude, inlines=[MediaExcludeInline])
 
+#
+# Generic inline with can_delete=False
+#
+
+class EpisodePermanent(Episode):
+    pass
+
+class MediaPermanentInline(generic.GenericTabularInline):
+    model = Media
+    can_delete = False
+
+admin.site.register(EpisodePermanent, inlines=[MediaPermanentInline])

tests/regressiontests/generic_inline_admin/tests.py

@@ -5,7 +5,8 @@ from django.conf import settings
 from django.contrib.contenttypes.generic import generic_inlineformset_factory
 
 # local test models
-from models import Episode, EpisodeExtra, EpisodeMaxNum, EpisodeExclude, Media
+from models import Episode, EpisodeExtra, EpisodeMaxNum, EpisodeExclude, \
+                   Media, EpisodePermanent, MediaPermanentInline
 
 class GenericAdminViewTest(TestCase):
     fixtures = ['users.xml']
@@ -177,3 +178,11 @@ class GenericInlineAdminParametersTest(TestCase):
         response = self.client.get('/generic_inline_admin/admin/generic_inline_admin/episodeexclude/%s/' % e.pk)
         formset = response.context['inline_admin_formsets'][0].formset
         self.failIf('url' in formset.forms[0], 'The formset has excluded "url" field.')
+
+class NoInlineDeletionTest(TestCase):
+    def test_no_deletion(self):
+        fake_site = object()
+        inline = MediaPermanentInline(EpisodePermanent, fake_site)
+        fake_request = object()
+        formset = inline.get_formset(fake_request)
+        self.assertFalse(formset.can_delete)

tests/regressiontests/modeladmin/models.py

@@ -291,6 +291,7 @@ blank=True for the model field.  Finally, the widget should have the
 ...     form = AdminConcertForm
 ...     model = Concert
 ...     fk_name = 'main_band'
+...     can_delete = True
 
 >>> class BandAdmin(ModelAdmin):
 ...     inlines = [