sparse fields parameter for include causes pydantic error #101

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1. srepmub commented on May 9, 2025

   

   srepmub

   on May 9, 2025

   Last edited by srepmub

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   the following test does something very similar, but it works:

   test_api/test_api_sqla_with_includes.py::TestGetUsersList::test_select_custom_fields_with_includes

   the difference seems to be that my test case includes a many-to-one relation, whereas this test case goes in the opposite direction.

   when changing the test case to start from 'post' and include 'user' (so opposite direction) I get a similar pydantic error:

           url = app.url_path_for("get_post_list")
           user_1, user_2 = sorted((user_1, user_2), key=lambda x: x.id)
       
           user_2_post = await create_post(async_session, user_2)
           user_1_post = await create_post(async_session, user_1)
       
           queried_user_fields = "name"
           queried_post_fields = "title"
       
           params = QueryParams(
               [
                   ("fields[user]", queried_user_fields),
                   ("fields[post]", queried_post_fields),
                   ("include", "user"),
               ],
           )
          response = await client.get(url, params=f"{params}")
   

   leading to:

   pydantic_core._pydantic_core.ValidationError: 2 validation errors for user_hidden_generationAttributesJSONAPI
   E           age
   E             Error extracting attribute: MissingGreenlet: greenlet_spawn has not been called; can't call await_only() here. Was IO attempted in an unexpected place? (Background on this error at: https://sqlalche.me/e/20/xd2s) [type=get_attribute_error, input_value=<examples.api_for_sqlalch...bject at 0x7c9d28f84440>, input_type=User]
   E               For further information visit https://errors.pydantic.dev/2.10/v/get_attribute_error
   E           email
   E             Error extracting attribute: MissingGreenlet: greenlet_spawn has not been called; can't call await_only() here. Was IO attempted in an unexpected place? (Background on this error at: https://sqlalche.me/e/20/xd2s) [type=get_attribute_error, input_value=<examples.api_for_sqlalch...bject at 0x7c9d28f84440>, input_type=User]
   E               For further information visit https://errors.pydantic.dev/2.10/v/get_attribute_error