Refs #31630 -- Removed DatabaseFeatures.can_introspect_autofield.

django/core/management/commands/inspectdb.py

@@ -142,7 +142,7 @@ class Command(BaseCommand):
                     if att_name == 'id' and extra_params == {'primary_key': True}:
                         if field_type == 'AutoField(':
                             continue
-                        elif field_type == 'IntegerField(' and not connection.features.can_introspect_autofield:
+                        elif field_type == connection.features.introspected_field_types['AutoField'] + '(':
                             comment_notes.append('AutoField?')
 
                     # Add 'null' and 'blank', if the 'null_ok' flag was present in the

django/db/backends/base/features.py

@@ -125,12 +125,10 @@ class BaseDatabaseFeatures:
     # which can't do it for MyISAM tables
     can_introspect_foreign_keys = True
 
-    # Can the backend introspect an AutoField, instead of an IntegerField?
-    can_introspect_autofield = False
-
     # Map fields which some backends may not be able to differentiate to the
     # field it's introspected as.
     introspected_field_types = {
+        'AutoField': 'AutoField',
         'BigAutoField': 'BigAutoField',
         'BigIntegerField': 'BigIntegerField',
         'BinaryField': 'BinaryField',

django/db/backends/mysql/features.py

@@ -14,7 +14,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     supports_forward_references = False
     supports_regex_backreferencing = False
     supports_date_lookup_using_string = False
-    can_introspect_autofield = True
     supports_index_column_ordering = False
     supports_timezones = False
     requires_explicit_null_ordering_when_grouping = True

django/db/backends/oracle/features.py

@@ -11,7 +11,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     has_select_for_update_of = True
     select_for_update_of_column = True
     can_return_columns_from_insert = True
-    can_introspect_autofield = True
     supports_subqueries_in_group_by = False
     supports_transactions = True
     supports_timezones = False

django/db/backends/sqlite3/features.py

@@ -18,7 +18,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     supports_timezones = False
     max_query_params = 999
     supports_mixed_date_datetime_comparisons = False
-    can_introspect_autofield = True
     supports_transactions = True
     atomic_transactions = False
     can_rollback_ddl = True

docs/releases/3.2.txt

@@ -250,6 +250,7 @@ backends.
 * The new ``DatabaseFeatures.introspected_field_types`` property replaces these
   features:
 
+  * ``can_introspect_autofield``
   * ``can_introspect_big_integer_field``
   * ``can_introspect_binary_field``
   * ``can_introspect_decimal_field``

tests/inspectdb/tests.py

@@ -99,8 +99,9 @@ class InspectDBTestCase(TestCase):
         assertFieldType = self.make_field_type_asserter()
         introspected_field_types = connection.features.introspected_field_types
 
-        if not connection.features.can_introspect_autofield:
+        auto_field_type = connection.features.introspected_field_types['AutoField']
-            assertFieldType('id', "models.IntegerField(primary_key=True)  # AutoField?")
+        if auto_field_type != 'AutoField':
+            assertFieldType('id', "models.%s(primary_key=True)  # AutoField?" % auto_field_type)
 
         assertFieldType('big_int_field', 'models.%s()' % introspected_field_types['BigIntegerField'])
 

tests/introspection/tests.py

@@ -80,7 +80,7 @@ class IntrospectionTests(TransactionTestCase):
         self.assertEqual(
             [connection.introspection.get_field_type(r[1], r) for r in desc],
             [
-                'AutoField' if connection.features.can_introspect_autofield else 'IntegerField',
+                connection.features.introspected_field_types['AutoField'],
                 'CharField',
                 'CharField',
                 'CharField',
@@ -108,7 +108,6 @@ class IntrospectionTests(TransactionTestCase):
             [False, nullable_by_backend, nullable_by_backend, nullable_by_backend, True, True, False, False]
         )
 
-    @skipUnlessDBFeature('can_introspect_autofield')
     def test_bigautofield(self):
         with connection.cursor() as cursor:
             desc = connection.introspection.get_table_description(cursor, City._meta.db_table)
@@ -117,7 +116,6 @@ class IntrospectionTests(TransactionTestCase):
             [connection.introspection.get_field_type(r[1], r) for r in desc],
         )
 
-    @skipUnlessDBFeature('can_introspect_autofield')
     def test_smallautofield(self):
         with connection.cursor() as cursor:
             desc = connection.introspection.get_table_description(cursor, Country._meta.db_table)