fix redefining field with name id with different than int type

mypy_django_plugin/main.py

@@ -105,6 +105,12 @@ def extract_and_return_primary_key_of_bound_related_field_parameter(ctx: Attribu
     return ctx.default_attr_type
 
 
+def return_integer_type_for_id_for_non_defined_primary_key_in_models(ctx: AttributeContext) -> Type:
+    if isinstance(ctx.type, Instance) and ctx.type.type.has_base(helpers.MODEL_CLASS_FULLNAME):
+        return ctx.api.named_generic_type('builtins.int', [])
+    return ctx.default_attr_type
+
+
 class ExtractSettingType:
     def __init__(self, module_fullname: str):
         self.module_fullname = module_fullname
@@ -234,6 +240,9 @@ class DjangoPlugin(Plugin):
             if module == 'builtins.object' and name in metadata:
                 return ExtractSettingType(module_fullname=metadata[name])
 
+        if fullname == 'builtins.object.id':
+            return return_integer_type_for_id_for_non_defined_primary_key_in_models
+
         return extract_and_return_primary_key_of_bound_related_field_parameter
 
 

mypy_django_plugin/plugins/models.py

@@ -8,7 +8,6 @@ from mypy.plugin import ClassDefContext
 from mypy.plugins.common import add_method
 from mypy.semanal import SemanticAnalyzerPass2
 from mypy.types import AnyType, Instance, NoneTyp, TypeOfAny
-
 from mypy_django_plugin import helpers
 from mypy_django_plugin.helpers import iter_over_assignments
 
@@ -161,7 +160,7 @@ class AddIdAttributeIfPrimaryKeyTrueIsNotSet(ModelClassInitializer):
                 and self.api.parse_bool(rvalue.args[rvalue.arg_names.index('primary_key')])):
                 break
         else:
-            self.add_new_node_to_model_class('id', self.api.builtin_type('builtins.int'))
+            self.add_new_node_to_model_class('id', self.api.builtin_type('builtins.object'))
 
 
 class AddRelatedManagers(ModelClassInitializer):

test-data/typecheck/fields.test

@@ -93,4 +93,14 @@ class Abstract(models.Model):
         abstract = True
 class User(Abstract):
     id = models.AutoField(primary_key=True)
+[out]
+
+[CASE standard_it_from_parent_model_could_be_overridden_with_non_integer_field_in_child_model]
+from django.db import models
+import uuid
+class ParentModel(models.Model):
+    pass
+class MyModel(ParentModel):
+    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+reveal_type(MyModel().id)  # E: Revealed type is 'uuid.UUID'
 [out]