Apollo-server: Passing fragment definitions to the server

[JeffML]

If I define a fragment inside the schema I pass to the server, it seems to parse but I can't access it from graphiql later. Is there a way to pass predefined fragments to the server so that a client can use these in queries?

server.js

server.use('/graphql', bodyParser.json(), graphqlExpress(request => ({
    schema,
    //context: context(request.headers, process.env),
})));

schema.js

    type Customer {
        details: Contact!
        addresses: [Address]!
    }

    # although this will parse, it doesn't seem to be referenceable in GraphiQL
    fragment addressLines on AddressFields {
      address1
      address2
      city
      region
      country
      postal_code
    }

        extend type Query {
            customers(first: Int = 0, next: Int = 50): [Customer]
            customer(id: Int!): Customer
        }

[martijnwalraven]

GraphQL does not support including fragments in schema definitions. Fragments have to be part of the query document that is sent to the server as part of the GraphQL request.

[stubailo]

That's correct - there's no way currently to define a fragment on the server side in GraphQL itself. We might want to add an error when people try to do that though.