Fixed #12667. Added optgroup validation support to model fields with choices. Thanks ramiro.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12374 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/fields/__init__.py

 import datetime
 import decimal
-import os
 import re
 import time
 
 import django.utils.copycompat as copy
 
 from django.db import connection
-from django.db.models import signals
 from django.db.models.fields.subclassing import LegacyConnection
 from django.db.models.query_utils import QueryWrapper
-from django.dispatch import dispatcher
 from django.conf import settings
 from django import forms
 from django.core import exceptions, validators
@@ -18,7 +15,7 @@ from django.utils.datastructures import DictWrapper
 from django.utils.functional import curry
 from django.utils.itercompat import tee
 from django.utils.text import capfirst
-from django.utils.translation import ugettext_lazy as _, ugettext
+from django.utils.translation import ugettext_lazy as _
 from django.utils.encoding import smart_unicode, force_unicode, smart_str
 from django.utils import datetime_safe
 
@@ -198,8 +195,15 @@ class Field(object):
             # Skip validation for non-editable fields.
             return
         if self._choices and value:
-            if not value in dict(self.choices):
-                raise exceptions.ValidationError(self.error_messages['invalid_choice'] % value)
+            for option_key, option_value in self.choices:
+                if type(option_value) in (tuple, list):
+                    # This is an optgroup, so look inside the group for options.
+                    for optgroup_key, optgroup_value in option_value:
+                        if value == optgroup_key:
+                            return
+                elif value == option_key:
+                    return
+            raise exceptions.ValidationError(self.error_messages['invalid_choice'] % value)
 
         if value is None and not self.null:
             raise exceptions.ValidationError(self.error_messages['null'])

tests/regressiontests/model_fields/tests.py

@@ -173,6 +173,10 @@ class ValidationTest(django.test.TestCase):
         f = models.CharField(choices=[('a','A'), ('b','B')])
         self.assertRaises(ValidationError, f.clean, "not a", None)
 
+    def test_choices_validation_supports_named_groups(self):
+        f = models.IntegerField(choices=(('group',((10,'A'),(20,'B'))),(30,'C')))
+        self.assertEqual(10, f.clean(10, None))
+
     def test_nullable_integerfield_raises_error_with_blank_false(self):
         f = models.IntegerField(null=True, blank=False)
         self.assertRaises(ValidationError, f.clean, None, None)
@@ -202,7 +206,7 @@ class ValidationTest(django.test.TestCase):
 class BigIntegerFieldTests(django.test.TestCase):
     def test_limits(self):
         # Ensure that values that are right at the limits can be saved
-        # and then retrieved without corruption. 
+        # and then retrieved without corruption.
         maxval = 9223372036854775807
         minval = -maxval - 1
         BigInt.objects.create(value=maxval)
@@ -236,7 +240,7 @@ class TypeCoercionTests(django.test.TestCase):
     """
     def test_lookup_integer_in_charfield(self):
         self.assertEquals(Post.objects.filter(title=9).count(), 0)
-        
+
     def test_lookup_integer_in_textfield(self):
         self.assertEquals(Post.objects.filter(body=24).count(), 0)
-        
+