Fixed #11936 -- Removed deferred models from the list returned by the…

… app_cache. Thanks to ryszard for the report, and clamothe for the initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11938 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/loading.py

@@ -132,29 +132,36 @@ def get_app_errors(self):
         self._populate()
         return self.app_errors
 
-    def get_models(self, app_mod=None, include_auto_created=False):
+    def get_models(self, app_mod=None, include_auto_created=False, include_deferred=False):
         """
         Given a module containing models, returns a list of the models.
         Otherwise returns a list of all installed models.
 
         By default, auto-created models (i.e., m2m models without an
         explicit intermediate table) are not included. However, if you
         specify include_auto_created=True, they will be.
+
+        By default, models created to satisfy deferred attribute
+        queries are *not* included in the list of models. However, if
+        you specify include_deferred, they will be.
         """
-        cache_key = (app_mod, include_auto_created)
+        cache_key = (app_mod, include_auto_created, include_deferred)
         try:
             return self._get_models_cache[cache_key]
         except KeyError:
             pass
         self._populate()
         if app_mod:
-            model_list = self.app_models.get(app_mod.__name__.split('.')[-2], SortedDict()).values()
+            app_list = [self.app_models.get(app_mod.__name__.split('.')[-2], SortedDict())]
         else:
-            model_list = []
-            for app_entry in self.app_models.itervalues():
-                model_list.extend(app_entry.values())
-        if not include_auto_created:
-            model_list = filter(lambda o: not o._meta.auto_created, model_list)
+            app_list = self.app_models.itervalues()
+        model_list = []
+        for app in app_list:
+            model_list.extend(
+                model for model in app.values()
+                if ((not model._deferred or include_deferred)
+                    and (not model._meta.auto_created or include_auto_created))
+            )
         self._get_models_cache[cache_key] = model_list
         return model_list
 

tests/modeltests/defer/models.py

@@ -183,10 +183,4 @@ def count_delayed_fields(obj, debug=False):
 >>> obj.name = "bb"
 >>> obj.save()
 
-# Finally, we need to flush the app cache for the defer module.
-# Using only/defer creates some artifical entries in the app cache
-# that messes up later tests. Purge all entries, just to be sure.
->>> from django.db.models.loading import cache
->>> cache.app_models['defer'] = {}
-
 """}

tests/regressiontests/defer_regress/models.py

@@ -132,11 +132,14 @@ def __unicode__(self):
 >>> i2._deferred # Item must still be non-deferred
 False
 
-# Finally, we need to flush the app cache for the defer module.
-# Using only/defer creates some artifical entries in the app cache
-# that messes up later tests. Purge all entries, just to be sure.
->>> from django.db.models.loading import cache
->>> cache.app_models['defer_regress'] = {}
+# Regression for #11936 - loading.get_models should not return deferred models by default.
+>>> from django.db.models.loading import get_models
+>>> sorted(get_models(models.get_app('defer_regress')), key=lambda obj: obj.__class__.__name__)
+[<class 'regressiontests.defer_regress.models.Item'>, <class 'regressiontests.defer_regress.models.RelatedItem'>, <class 'regressiontests.defer_regress.models.Child'>, <class 'regressiontests.defer_regress.models.Leaf'>]
+
+>>> sorted(get_models(models.get_app('defer_regress'), include_deferred=True), key=lambda obj: obj.__class__.__name__)
+[<class 'regressiontests.defer_regress.models.Item'>, <class 'regressiontests.defer_regress.models.RelatedItem'>, <class 'regressiontests.defer_regress.models.Child'>, <class 'regressiontests.defer_regress.models.Leaf'>, <class 'regressiontests.defer_regress.models.Item_Deferred_text_value'>, <class 'regressiontests.defer_regress.models.Item_Deferred_name_other_value_text'>, <class 'regressiontests.defer_regress.models.RelatedItem_Deferred_item_id'>, <class 'regressiontests.defer_regress.models.Leaf_Deferred_second_child_value'>, <class 'regressiontests.defer_regress.models.Leaf_Deferred_name_value'>, <class 'regressiontests.defer_regress.models.Item_Deferred_name'>, <class 'regressiontests.defer_regress.models.Item_Deferred_other_value_text_value'>, <class 'regressiontests.defer_regress.models.Leaf_Deferred_value'>]
 
 """
 }
+