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Discussion on: Complete Introduction to Fullstack, Type-Safe GraphQL (feat. Next.js, Nexus, Prisma)

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jmales profile image
Jmales •

Thanks for the tutorial, lot's of great info!

I'm confused about something though. You said that using graphql-code-generator our source of truth is schema.prisma.

Maybe I'm doing something wrong but I still need to define my objectTypes, queryTypes, mutationTypes and then have my basic queries somewhere right?

import { schema } from 'nexus';

schema.objectType({
  name: 'User',
  definition(t) {
    t.model.userId();
    t.model.name();
  },
});

schema.extendType({
  type: 'Query',
  definition(t) {
    t.crud.user();
    t.crud.users({ filtering: true, ordering: true });
  },
});

schema.extendType({
  type: 'Mutation',
  definition(t) {
    t.crud.createOneUser();
  },
});
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And the queries:

export const UsersQuery = /* GraphQL */ `
  query UsersQuery {
    users {
      userId
      name
    }
  }
`;
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I feel that I'm writing a lot of redundant code

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hexrcs profile image
Xiaoru Li •

Hi there! The source of truth of GraphQL is not schema.prisma, but the GraphQL endpoint powered by Nexus.

You still need to clearly define how the GraphQL schema looks like (eg. object types), because of security (you don't want to expose everything from your DB, think ID and password) and flexibility (you can write your own resolver instead of being restricted to basic CRUD operations on the database).

However, the Nexus-Prisma plugin provides some simple .crud helpers as you can see from the examples, if you just want to directly expose CRUD operations to your GraphQL API. 😄