Fixed #35236 -- Used Field.attname/column attributes instead of get_attname()/get_attname_column().

django/contrib/admin/views/main.py

@@ -618,7 +618,7 @@ class ChangeList:
             else:
                 if isinstance(field.remote_field, ManyToOneRel):
                     # <FK>_id field names don't require a join.
-                    if field_name != field.get_attname():
+                    if field_name != field.attname:
                         return True
         return False
 

django/contrib/contenttypes/fields.py

@@ -187,7 +187,7 @@ class GenericForeignKey(FieldCacheMixin, Field):
         fk_dict = defaultdict(set)
         # We need one instance for each group in order to get the right db:
         instance_dict = {}
-        ct_attname = self.model._meta.get_field(self.ct_field).get_attname()
+        ct_attname = self.model._meta.get_field(self.ct_field).attname
         for instance in instances:
             # We avoid looking for values if either ct_id or fkey value is None
             ct_id = getattr(instance, ct_attname)
@@ -240,7 +240,7 @@ class GenericForeignKey(FieldCacheMixin, Field):
         # content type ID here, and later when the actual instance is needed,
         # use ContentType.objects.get_for_id(), which has a global cache.
         f = self.model._meta.get_field(self.ct_field)
-        ct_id = getattr(instance, f.get_attname(), None)
+        ct_id = getattr(instance, f.attname, None)
         pk_val = getattr(instance, self.fk_field)
 
         rel_obj = self.get_cached_value(instance, default=None)

django/contrib/contenttypes/forms.py

@@ -67,10 +67,10 @@ class BaseGenericInlineFormSet(BaseModelFormSet):
     def save_new(self, form, commit=True):
         setattr(
             form.instance,
-            self.ct_field.get_attname(),
+            self.ct_field.attname,
             ContentType.objects.get_for_model(self.instance).pk,
         )
-        setattr(form.instance, self.ct_fk_field.get_attname(), self.instance.pk)
+        setattr(form.instance, self.ct_fk_field.attname, self.instance.pk)
         return form.save(commit=commit)
 
 

django/core/serializers/xml_serializer.py

@@ -106,7 +106,7 @@ class Serializer(base.Serializer):
         differently from regular fields).
         """
         self._start_relational_field(field)
-        related_att = getattr(obj, field.get_attname())
+        related_att = getattr(obj, field.attname)
         if related_att is not None:
             if self.use_natural_foreign_keys and hasattr(
                 field.remote_field.model, "natural_key"

django/db/models/base.py

@@ -1925,7 +1925,7 @@ class Model(AltersData, metaclass=ModelBase):
         errors = []
 
         for f in cls._meta.local_fields:
-            _, column_name = f.get_attname_column()
+            column_name = f.column
 
             # Ensure the column name is not already in use.
             if column_name and column_name in used_column_names:
@@ -1972,7 +1972,7 @@ class Model(AltersData, metaclass=ModelBase):
         errors = []
         property_names = cls._meta._property_names
         related_field_accessors = (
-            f.get_attname()
+            f.attname
             for f in cls._meta._get_fields(reverse=False)
             if f.is_relation and f.related_model is not None
         )
@@ -2320,13 +2320,11 @@ class Model(AltersData, metaclass=ModelBase):
             return errors
 
         for f in cls._meta.local_fields:
-            _, column_name = f.get_attname_column()
-
             # Check if auto-generated name for the field is too long
             # for the database.
             if (
                 f.db_column is None
-                and column_name is not None
+                and (column_name := f.column) is not None
                 and len(column_name) > allowed_len
             ):
                 errors.append(
@@ -2348,10 +2346,9 @@ class Model(AltersData, metaclass=ModelBase):
             # Check if auto-generated name for the M2M field is too long
             # for the database.
             for m2m in f.remote_field.through._meta.local_fields:
-                _, rel_name = m2m.get_attname_column()
                 if (
                     m2m.db_column is None
-                    and rel_name is not None
+                    and (rel_name := m2m.column) is not None
                     and len(rel_name) > allowed_len
                 ):
                     errors.append(

django/db/models/expressions.py

@@ -1204,8 +1204,7 @@ class RawSQL(Expression):
         if query.model:
             for parent in query.model._meta.get_parent_list():
                 for parent_field in parent._meta.local_fields:
-                    _, column_name = parent_field.get_attname_column()
-                    if column_name.lower() in self.sql.lower():
+                    if parent_field.column.lower() in self.sql.lower():
                         query.resolve_ref(
                             parent_field.name, allow_joins, reuse, summarize
                         )

django/db/models/query.py

@@ -2186,8 +2186,7 @@ class RawQuerySet:
         converter = connections[self.db].introspection.identifier_converter
         model_fields = {}
         for field in self.model._meta.fields:
-            name, column = field.get_attname_column()
-            model_fields[converter(column)] = field
+            model_fields[converter(field.column)] = field
         return model_fields
 
 

django/forms/models.py

@@ -1140,7 +1140,7 @@ class BaseInlineFormSet(BaseModelFormSet):
         if self.fk.remote_field.field_name != self.fk.remote_field.model._meta.pk.name:
             fk_value = getattr(self.instance, self.fk.remote_field.field_name)
             fk_value = getattr(fk_value, "pk", fk_value)
-        setattr(form.instance, self.fk.get_attname(), fk_value)
+        setattr(form.instance, self.fk.attname, fk_value)
         return form
 
     @classmethod