test json field

tests/test_m2m_through_fields.py

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+import databases
+import pytest
+import sqlalchemy
+
+import ormar
+from tests.settings import DATABASE_URL
+
+database = databases.Database(DATABASE_URL, force_rollback=True)
+metadata = sqlalchemy.MetaData()
+
+
+class BaseMeta(ormar.ModelMeta):
+    database = database
+    metadata = metadata
+
+
+class Category(ormar.Model):
+    class Meta(BaseMeta):
+        tablename = "categories"
+
+    id: int = ormar.Integer(primary_key=True)
+    name: str = ormar.String(max_length=40)
+
+
+class PostCategory(ormar.Model):
+    class Meta(BaseMeta):
+        tablename = "posts_x_categories"
+
+    id: int = ormar.Integer(primary_key=True)
+    sort_order: int = ormar.Integer(nullable=True)
+
+
+class Post(ormar.Model):
+    class Meta(BaseMeta):
+        pass
+
+    id: int = ormar.Integer(primary_key=True)
+    title: str = ormar.String(max_length=200)
+    categories = ormar.ManyToMany(Category, through=PostCategory)
+
+
+@pytest.fixture(autouse=True, scope="module")
+async def create_test_database():
+    engine = sqlalchemy.create_engine(DATABASE_URL)
+    metadata.create_all(engine)
+    yield
+    metadata.drop_all(engine)
+
+
+@pytest.mark.asyncio
+async def test_setting_fields_on_through_model():
+    async with database:
+        # TODO: check/ modify following
+        # loading the data into model instance of though model?
+        # <- attach to other side? both sides? access by through, or add to fields?
+        # creating while adding to relation (kwargs in add?)
+        # creating in query (dividing kwargs between final and through)
+        # updating in query
+        # sorting in filter (special __through__<field_name> notation?)
+        # ordering by in order_by
+        # accessing from instance (both sides?)
+        # modifying from instance (both sides?)
+        # including/excluding in fields?
+        # allowing to change fk fields names in through model?
+        pass