Graphene Django returning null values

Question

When using the following schema I keep getting null values when querying for products. From my understanding of the documentation, it should return an array with 2 objects containing id and name. Can anyone help me to understand why the following code does not work?

import graphene class Product(graphene.ObjectType): id = graphene.Int() name = graphene.String() class Query(graphene.ObjectType): products = graphene.List(Product) def resolve_products(self, info, **kwargs): return [{ "name": "TEST", "id": 1 }, { "name": "TEST2", "id": 2 }] schema = graphene.Schema(query=Query)

Your resolve_products method is returning a list of dictionaries, not a list of Product — Mark Chackerian
– Mark Chackerian, Commented Aug 13, 2018 at 14:52
sorry, but not sure I quite understand. Is Product not an object type? — Mark
– Mark, Commented Aug 13, 2018 at 18:49

jiap · Accepted Answer · 2019-04-07 15:21:21Z

I don't know whether you figure it out right now. I encountered the same problem as you and thanks for the internet. the following answer may be helpful.

PS, i use flask to visualize the web.

from flask import Flask from flask_graphql import GraphQLView import graphene app = Flask(__name__) class Product(graphene.ObjectType): id = graphene.Int() name = graphene.String() class Query(graphene.ObjectType): products = graphene.List(Product) def resolve_products(self, info, **kwargs): return [Product(name="TEST", id=1), Product(name="TEST2", id= 2)] schema = graphene.Schema(query=Query) app.add_url_rule('/graphql', view_func=GraphQLView.as_view('graphql', schema=schema, graphiql=True)) app.run(port=4901)

when run the .py, enter http://localhost:4901/graphql to query.

query{ users{ id } }

Return a list-type. return [Product(name="TEST", id=1), Product(name="TEST2", id= 2)]

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