@julian thanks for your reply.

The reason why I inject Apollo as a middleware is because of the server integrate document on Apollo website shows that we can use the apollo-server-express package to integrate GraphQL with existing Express server by adding following code:

server.applyMiddleware({ app }); // app is from an existing express app

Does router will be the express app to be passed to plugins? Because I solved this problem by passing router into .applyMiddleware() method as following changes:

const router = params.router;

apolloServer.applyMiddleware({
    app: router,
    path: '/api/mygraphql',
});

Now, the GraphQL works fine on my NodeBB server ! Hope this can help someone who run into the same problem like me. Although it looks like GraphQL is not popular in NodeBB community .

Hi,

I am trying to add a route into NodeBB to serve GraphQL API.
After doing some research on Google, I find a popular package named Apollo GraphQL, which has a document to show how to integrate Apollo GraphQL server with existing Express server, can help me to do my job.

Then, I tried to create a plugin and put the example code of graphql with a route path:/mygraphql into my library.js. But, the nodebb keep returning 404 Not found. Did I do anything wrong?

Here is what my library.js looks like:

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

const books = [
	{
		title: 'Harry Potter and the Chamber of Secrets',
		author: 'J.K. Rowling',
	},
	{
		title: 'Jurassic Park',
		author: 'Michael Crichton',
	},
];

const typeDefs = gql`
  type Book {
    title: String
    author: String
  }

  type Query {
    books: [Book]
  }
`;

const resolvers = {
	Query: {
		books: () => books,
	},
};

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


const plugin = {};

plugin.init = function (params, callback) {
	const app = params.app;

	apolloServer.applyMiddleware({
		app,
		path: '/api/mygraphql',
	});

	callback();
};

module.exports = plugin;

Thanks!