fix qryset fields, model update, model delete, model load, qryset update, qruset filter, qryset bulk_load, qryset bulk_update

tests/test_aliases.py

@@ -18,7 +18,7 @@ class Child(ormar.Model):
     id: ormar.Integer(name='child_id', primary_key=True)
     first_name: ormar.String(name='fname', max_length=100)
     last_name: ormar.String(name='lname', max_length=100)
-    born_year: ormar.Integer(name='year_born')
+    born_year: ormar.Integer(name='year_born', nullable=True)
 
 
 class ArtistChildren(ormar.Model):
@@ -93,3 +93,39 @@ async def test_working_with_aliases():
             assert artist.children[0].first_name == 'Son'
             assert artist.children[1].last_name == '2'
 
+            await artist.update(last_name='Bundy')
+            await Artist.objects.filter(pk=artist.pk).update(born_year=1974)
+
+            artist = await Artist.objects.select_related('children').get()
+            assert artist.last_name == 'Bundy'
+            assert artist.born_year == 1974
+
+            artist = await Artist.objects.select_related('children').fields(
+                ['first_name', 'last_name', 'born_year', 'child__first_name', 'child__last_name']).get()
+            assert artist.children[0].born_year is None
+
+
+@pytest.mark.asyncio
+async def test_bulk_operations_and_fields():
+    async with database:
+        d1 = Child(first_name='Daughter', last_name='1', born_year=1990)
+        d2 = Child(first_name='Daughter', last_name='2', born_year=1991)
+        await Child.objects.bulk_create([d1, d2])
+
+        children = await Child.objects.filter(first_name='Daughter').all()
+        assert len(children) == 2
+        assert children[0].last_name == '1'
+
+        for child in children:
+            child.born_year = child.born_year - 100
+
+        await Child.objects.bulk_update(children)
+
+        children = await Child.objects.fields(['first_name', 'last_name']).all()
+        assert len(children) == 2
+        for child in children:
+            assert child.born_year is None
+
+        await children[0].load()
+        await children[0].delete()
+        children = await Child.objects.all()