Adding async_first and abstract base class

mongoengine_plus/aio/async_query_set.py

@@ -4,6 +4,9 @@
 
 
 class AsyncQuerySet(QuerySet):
+    async def async_first(self):
+        return await create_awaitable(self.first)
+
     async def async_get(self, *q_objs, **query):
         return await create_awaitable(self.get, *q_objs, **query)
 

mongoengine_plus/models/base.py

@@ -4,6 +4,9 @@
 
 
 class BaseModel:
+    meta = {
+        'abstract': True,
+    }
     _excluded: ClassVar = []
     _hidden: ClassVar = []
 

mongoengine_plus/version.py

@@ -1 +1 @@
-__version__ = '0.0.2'
+__version__ = '0.0.3.dev0'

tests/aio/test_async_query_set.py

@@ -25,3 +25,9 @@ async def test_to_list(cities):
         Q(state='Chiapas') | Q(state='Tabasco')
     ).async_to_list()
     assert len(filtered) == 3
+
+
+@pytest.mark.asyncio
+async def test_first(cities):
+    first_city = await City.objects(state='Tabasco').async_first()
+    assert first_city.state == 'Tabasco'