Relay wrong annotation error
Description
This error is thrown when a field on a relay connection has a wrong type annotation. For example, the following code will throw this error:
from typing import List
import strawberryfrom strawberry import relay
@strawberry.typeclass MyType(relay.Node): ...
@strawberry.typeclass Query: # The annotation is not a subclass of relay.Connection my_type_conn: List[MyType] = relay.connection()
# Missing the Connection class annotation @relay.connection def my_type_conn_with_resolver(self) -> List[MyType]: ...
# The connection class is not a subclass of relay.Connection @relay.connection(List[MyType]) def my_type_conn_with_resolver2(self) -> List[MyType]: ...
How to fix this error
You can fix this error by properly annotating your attribute or resolver with
relay.Connection
type subclass.
For example:
from typing import List
import strawberryfrom strawberry import relay
@strawberry.typeclass MyType(relay.Node): ...
def get_my_type_list() -> List[MyType]: ...
@strawberry.typeclass Query: my_type_conn: relay.Connection[MyType] = relay.connection( resolver=get_my_type_list, )
# Missing the Connection class annotation @relay.connection(relay.Connection[MyType]) def my_type_conn_with_resolver(self) -> List[MyType]: ...
# The connection class is not a subclass of relay.Connection @relay.connection(relay.Connection[MyType]) def my_type_conn_with_resolver2(self) -> List[MyType]: ...