mutation example graphene sqlAlchemy

schema_with_mutation.py

...

class UpdatePersonName(graphene.Mutation):

    class Input:
        uuid = graphene.Int(required=True)
        name = graphene.String(required=True)

    person = graphene.Field(Person)

    @classmethod
    def mutate(cls, _, args, context, info):
        uuid = args.get('uuid')
        name = args.get('name')
        query = Person.get_query(context).filter_by(uuid=uuid)
        update = person.update({"name":name})
        return UpdatePersonName(person=query.first())
        
class Query(graphene.ObjectType):
    
    node = graphene.relay.Node.Field()
    person = graphene.Field(Person, uuid = graphene.Int())
    
    def resolve_person(self, args, context, info):
        query = Person.get_query(context)
        uuid = args.get('uuid')
        return query.get(uuid)
      
class Mutation(graphene.ObjectType):
    update_person_name = UpdatePersonName.Field()

schema = graphene.Schema(query=Query, mutation=Mutation, types=[Person])