Say I have the following datamodel.graphql : <div

Transforming an incoming selection set before passing it into a resolver about prisma-binding HOT 2 CLOSED

prisma-labs commented on May 24, 2024

Transforming an incoming selection set before passing it into a resolver

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Comments (2)

maticzav commented on May 24, 2024 5

Instead of defining feed- field resolver, you should define feed type resolver.

// Feed.ts
import { Context } from '../utils'

export const Feed = {
   async links(parent, args, ctx: Context, info) {
      return ctx.db.query.links({}, info)
   },
   async count(parent, args, ctx: Context, info) { // <- C (parent argument)
      const connections = await ctx.db.query.linksConnection({} , ` { aggregate { count } } `)
      return connections.aggregate.count
   }
}

// resolvers.ts
import { Feed } from './Feed'

export const resolvers = {
   Query: {
      feed: () => ({}), // <- A
   },
   Feed,
}

🤞 everything's ok, I have written it here 😄

Bit of explanation:

what A does is pass no property to Feed resolver. If we were to pass any property down, a: 'foo', for example, like this feed: () => ({ a: 'foo' }), the parent argument (C) would, instead of {} have value { a: 'foo' }.

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marktani commented on May 24, 2024 1

The answer is to return an object with two fields links and count. The links field is another resolver again:

async function feed(parent, args, ctx, info) {
  const allLinks = await ctx.db.query.links({})
  const count = allLinks.length
  const queriedLinkes = await ctx.db.query.links({ }) // don't pass info!

  return {
    links: queriedLinkes,
    count
  }
}