fix inherited pk and add field accessor access to relations

tests/test_inheritance_and_pydantic_generation/test_inheritance_with_default.py

@@ -0,0 +1,64 @@
+import datetime
+import uuid
+
+import databases
+import pytest
+import sqlalchemy
+
+import ormar
+from tests.settings import DATABASE_URL
+
+metadata = sqlalchemy.MetaData()
+database = databases.Database(DATABASE_URL)
+
+
+class BaseMeta(ormar.ModelMeta):
+    database = database
+    metadata = metadata
+
+
+class BaseModel(ormar.Model):
+    class Meta(ormar.ModelMeta):
+        abstract = True
+
+    id: uuid.UUID = ormar.UUID(
+        primary_key=True, default=uuid.uuid4, uuid_format="string"
+    )
+    created_at: datetime.datetime = ormar.DateTime(default=datetime.datetime.utcnow())
+    updated_at: datetime.datetime = ormar.DateTime(default=datetime.datetime.utcnow())
+
+
+class Member(BaseModel):
+    class Meta(BaseMeta):
+        tablename = "members"
+
+    first_name: str = ormar.String(max_length=50)
+    last_name: str = ormar.String(max_length=50)
+
+
+@pytest.fixture(autouse=True, scope="module")
+def create_test_database():
+    engine = sqlalchemy.create_engine(DATABASE_URL)
+    metadata.drop_all(engine)
+    metadata.create_all(engine)
+    yield
+    metadata.drop_all(engine)
+
+
+def test_model_structure():
+    assert "id" in BaseModel.__fields__
+    assert "id" in BaseModel.Meta.model_fields
+    assert BaseModel.Meta.model_fields["id"].has_default()
+    assert BaseModel.__fields__["id"].default_factory is not None
+
+    assert "id" in Member.__fields__
+    assert "id" in Member.Meta.model_fields
+    assert Member.Meta.model_fields["id"].has_default()
+    assert Member.__fields__["id"].default_factory is not None
+
+
+@pytest.mark.asyncio
+async def test_fields_inherited_with_default():
+    async with database:
+        await Member(first_name="foo", last_name="bar").save()
+        await Member.objects.create(first_name="foo", last_name="bar")