Refs #23879 -- Made introspection respect required_db_features.

django/db/backends/base/introspection.py

@@ -54,6 +54,16 @@ class BaseDatabaseIntrospection:
         """
         raise NotImplementedError('subclasses of BaseDatabaseIntrospection may require a get_table_list() method')
 
+    def get_migratable_models(self):
+        from django.apps import apps
+        from django.db import router
+        return (
+            model
+            for app_config in apps.get_app_configs()
+            for model in router.get_migratable_models(app_config, self.connection.alias)
+            if model._meta.can_migrate(self.connection)
+        )
+
     def django_table_names(self, only_existing=False, include_views=True):
         """
         Return a list of all table names that have associated Django models and
@@ -61,11 +71,8 @@ class BaseDatabaseIntrospection:
 
         If only_existing is True, include only the tables in the database.
         """
-        from django.apps import apps
-        from django.db import router
         tables = set()
-        for app_config in apps.get_app_configs():
-            for model in router.get_migratable_models(app_config, self.connection.alias):
+        for model in self.get_migratable_models():
             if not model._meta.managed:
                 continue
             tables.add(model._meta.db_table)
@@ -88,14 +95,9 @@ class BaseDatabaseIntrospection:
         Return a set of all models represented by the provided list of table
         names.
         """
-        from django.apps import apps
-        from django.db import router
-        all_models = []
-        for app_config in apps.get_app_configs():
-            all_models.extend(router.get_migratable_models(app_config, self.connection.alias))
         tables = set(map(self.identifier_converter, tables))
         return {
-            m for m in all_models
+            m for m in self.get_migratable_models()
             if self.identifier_converter(m._meta.db_table) in tables
         }
 
@@ -104,13 +106,9 @@ class BaseDatabaseIntrospection:
         Return a list of information about all DB sequences for all models in
         all apps.
         """
-        from django.apps import apps
-        from django.db import router
-
         sequence_list = []
         with self.connection.cursor() as cursor:
-            for app_config in apps.get_app_configs():
-                for model in router.get_migratable_models(app_config, self.connection.alias):
+            for model in self.get_migratable_models():
                 if not model._meta.managed:
                     continue
                 if model._meta.swapped: