Removed the only_installed argument of Apps.get_models.

Refs #15903, #15866, #15850.

django/apps/registry.py

@@ -27,10 +27,6 @@ class Apps(object):
         if master and hasattr(sys.modules[__name__], 'apps'):
             raise RuntimeError("You may create only one master registry.")
 
-        # When master is set to False, the registry ignores the only_installed
-        # arguments to get_model[s].
-        self.master = master
-
         # Mapping of app labels => model names => model classes. Every time a
         # model is imported, ModelBase.__new__ calls apps.register_model which
         # creates an entry in all_models. All imported models are registered,
@@ -190,9 +186,8 @@ class Apps(object):
 
     # This method is performance-critical at least for Django's test suite.
     @lru_cache.lru_cache(maxsize=None)
-    def get_models(self, app_mod=None,
-                   include_auto_created=False, include_deferred=False,
-                   only_installed=True, include_swapped=False):
+    def get_models(self, app_mod=None, include_auto_created=False,
+                   include_deferred=False, include_swapped=False):
         """
         Given a module containing models, returns a list of the models.
         Otherwise returns a list of all installed models.
@@ -205,33 +200,20 @@ class Apps(object):
         queries are *not* included in the list of models. However, if
         you specify include_deferred, they will be.
 
-        By default, models that aren't part of installed apps will *not*
-        be included in the list of models. However, if you specify
-        only_installed=False, they will be. If you're using a non-default
-        Apps, this argument does nothing - all models will be included.
-
         By default, models that have been swapped out will *not* be
         included in the list of models. However, if you specify
         include_swapped, they will be.
         """
-        if not self.master:
-            only_installed = False
         model_list = None
         self.populate_models()
         if app_mod:
             app_label = app_mod.__name__.split('.')[-2]
-            if only_installed:
             try:
                 model_dicts = [self.app_configs[app_label].models]
             except KeyError:
                 model_dicts = []
         else:
-                model_dicts = [self.all_models[app_label]]
-        else:
-            if only_installed:
             model_dicts = [app_config.models for app_config in self.app_configs.values()]
-            else:
-                model_dicts = self.all_models.values()
         model_list = []
         for model_dict in model_dicts:
             model_list.extend(

django/db/models/options.py

@@ -514,7 +514,7 @@ class Options(object):
                     cache[obj] = model
         # Collect also objects which are in relation to some proxy child/parent of self.
         proxy_cache = cache.copy()
-        for klass in self.apps.get_models(include_auto_created=True, only_installed=False):
+        for klass in self.apps.get_models(include_auto_created=True):
             if not klass._meta.swapped:
                 for f in klass._meta.local_fields:
                     if f.rel and not isinstance(f.rel.to, six.string_types) and f.generate_reverse_relation:
@@ -557,7 +557,7 @@ class Options(object):
                     cache[obj] = parent
                 else:
                     cache[obj] = model
-        for klass in self.apps.get_models(only_installed=False):
+        for klass in self.apps.get_models():
             if not klass._meta.swapped:
                 for f in klass._meta.local_many_to_many:
                     if (f.rel

docs/releases/1.7.txt

@@ -593,6 +593,10 @@ methods are only referring to fields or other items in ``model._meta``.
 App-loading changes
 ~~~~~~~~~~~~~~~~~~~
 
+You should make sure that your project doesn't import models from applications
+that aren't in :setting:`INSTALLED_APPS`. Relations involving such models may
+not be created properly.
+
 Subclasses of :class:`~django.core.management.AppCommand` must now implement a
 :meth:`~django.core.management.AppCommand.handle_app_config` method instead of
 ``handle_app()``. This method receives an :class:`~django.apps.AppConfig` instance.
@@ -609,8 +613,8 @@ period. In addition, the following changes take effect immediately:
 * ``get_model`` raises :exc:`~exceptions.LookupError` instead of returning
   ``None`` when no model is found.
 
-* The ``only_installed`` and ``seed_cache`` arguments of ``get_model`` no
-  longer exist.
+* The ``only_installed`` argument of ``get_model`` and ``get_models`` no
+  longer exists, nor does the ``seed_cache`` argument of ``get_model``.
 
 While the new implementation is believed to be more robust, regressions cannot
 be ruled out, especially during the import sequence. Circular imports that

tests/app_loading/tests.py

@@ -82,16 +82,3 @@ class GetModelsTest(TestCase):
 
     def test_get_models_with_app_label_only_returns_installed_models(self):
         self.assertEqual(apps.get_models(self.not_installed_module), [])
-
-    def test_get_models_with_not_installed(self):
-        self.assertIn(
-            "NotInstalledModel",
-            [m.__name__ for m in apps.get_models(only_installed=False)])
-
-
-class NotInstalledModelsTest(TestCase):
-    def test_related_not_installed_model(self):
-        from .not_installed.models import NotInstalledModel
-        self.assertEqual(
-            set(NotInstalledModel._meta.get_all_field_names()),
-            set(["id", "relatedmodel", "m2mrelatedmodel"]))