How to pass request body into GraphQL Context?

Question

I'm currently attempting to get the request body into context, because part of the body contains a JWT that needs to be decoded. However when I try the following I get undefined for context:

    app.use('/', graphqlHTTP((req) => ({
      schema: Schema,
      context: req.body,
      pretty: true,
      graphiql: false
    })));

I logged out req and I didn't see body in there. I'm using a library called react-reach, it adds the following to the body on the request:

    {
      query: {...},
      queryParams: {...},
      options: {
       token: '...' // <-- I'm passing the token into options
      }
    }

I know the body is being interpreted because my queries/mutations that are in the body are being interpreted and executed. Just can't seem to find it when passed to context.

Answer 1

Your req.body is undefined unless you're using additional body-parser middleware. From the Express documentation:

req.body

Contains key-value pairs of data submitted in the request body. By default, it is undefined, and is populated when you use body-parsing middleware such as body-parser and multer. http://expressjs.com/en/api.html#req.body

graphqlHTTP is doing it's own thing to parse the request body (see here) and that's why your queries/mutations are working.

Adding middleware (like body-parser or multer) to parse the request body should make it available on req.body and then your context should become populated with what you're looking for.