@lawjolla commented on @manticarodrigo’s file https://prisma.slack.com/files/U9J4TSD7Z/F9QG2K37E/prisma_feed_query.txt: First edit your type to include order_by, e.g.

type Query {
  feed(..., orderBy: String): ...
}

Then in your resolver...

feed(parent, args, ctx, info) {
    return ctx.db.query.posts({
      orderBy: args.orderBy
    }, info)
  },