Global ids from objects with composite primary keys are not correctly extracted

[eoma]

Due to the way graphene-sqlalchemy constructs global ids, it is not possible to get unique global ids from objects with composite primary keys, typically association objects.

[eoma]

A serialization format of complex ids should probably be decided upon too, due to the way sqlalchemy's Query.get() expects ids to be entered.

[eoma]

A somewhat simple oneway solution is to make SQLAlchemyObjectType.resolve_id return a tuple of the primary keys if it is a list with more than one entry:

    def resolve_id(self, args, context, info):
        graphene_type = info.parent_type.graphene_type
        if is_node(graphene_type):
            keys = self.__mapper__.primary_key_from_instance(self)
            return tuple(keys) if len(keys) > 1 else keys[0]
        return getattr(self, graphene_type._meta.id, None)

[syrusakbary]

This is now merged, and also fixed in upcoming Graphene version 2.0

[github-actions]

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