graphql enum not defined in schema

Question

I am currently learning GraphQL and I have stumbled upon this error. How can I fix it while still using the GraphQLEnumType object.

const { ApolloServer, gql } = require('apollo-server');
const { GraphQLEnumType } = require('graphql');

const Bonus = new GraphQLEnumType({
    name: 'Bonus',
    values: {
        BIG: {
            value: "Big",
        },
        SMALL: {
            value: "Small",
        }
    },
});

const typeDefs = gql`

enum Bonus {
  BIG
  SMALL
}
`;

const resolvers = {
    Bonus : Bonus
}

const server = new ApolloServer({
    typeDefs,
    resolvers
});

server.listen().then(({ url }) => {
    console.log(`🚀  Server ready at ${url}`);
});

Following is the error:

/home/jonas/Projects/javascript-questions-flow4b/backend/node_modules/graphql-tools/dist/generate/addResolveFunctionsToSchema.js:53 throw new _1.SchemaError(typeName + "." + fieldName + " was defined in resolvers, but enum is not in schema"); ^

Error: Bonus.name was defined in resolvers, but enum is not in schema

Daniel Rearden · Accepted Answer · 2019-05-14 19:41:19Z

1

You can't use GraphQLEnumType if you're configuring ApolloServer using typeDefs and resolvers. Instead, if you want to provide custom values for your enum values, pass in the appropriate object as part of your resolvers, as shown in the docs.

const resolvers: {
  Bonus: {
    BIG: 'Big',
    SMALL: 'Small', 
  },
}

Note that you only need to do this if you want to internally map the enum values to something other than their names. BIG will map to "BIG" and SMALL will map to "SMALL" by default, so if that's all you need, just don't include Bonus in your resolvers at all.

answered May 14, 2019 at 19:41

Daniel Rearden

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4 Comments

Jonas Grønbek Over a year ago

Thanks, I think I need to do some more reading to fully understand this answer :)

Daniel Rearden Over a year ago

I'm happy to provide additional details if this didn't fully answer your question. If you're building a server using Apollo, I would suggest sticking to their extensive documentation. While Apollo uses GraphQL.js under the hood, most of the actual GraphQL.js documentation is not relevant when you're using Apollo.

LMS5400 Over a year ago

yep, thats not helpful.

ChumiestBucket Over a year ago

"most of the actual GraphQL.js documentation is not relevant when you're using Apollo" i just puked in my mouth

AutomatedOwl · Accepted Answer · 2020-04-10 16:55:50Z

0

You can actually use GraphQLEnumType if you're configuring ApolloServer using typeDefs and resolvers.

Define BonusType as scalar in your typeDefs object:

const BonusType = new GraphQLEnumType({
    name: 'Bonus',
    values: {
        BIG: {
            value: "Big",
        },
        SMALL: {
            value: "Small",
        }
    },
});

const typeDefs = gql`

scalar BonusType
`;

Now whenever adding query for BonusType object you will get as result: 1. Name of BonusType enum. 2. Value of the BonusType enum.

See https://spectrum.chat/apollo/apollo-server/how-to-use-custom-enums~376c8da8-19a5-4338-9bee-4cba7a036d8f for more info

answered Apr 10, 2020 at 16:55

AutomatedOwl

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