Graphcool types and queries

queries.graphql

mutation {
  createUser(name: "Sébastien") {
    id
    name
  }
}

mutation {
  createUser(name: "Mary") {
    id
    name
  }
}

{
  allUsers {
    id
    name
    posts {
      id
      imageUrl
    }
  }
}

mutation {
  createPost(
    authorId: "cjur4185307sq0106c5uy3wyh"
    imageUrl: "https://images.unsplash.com/photo-1555706195-38f133d1419f"
  ) {
    id
    author {
      id
      name
    }
    imageUrl
  }
}

mutation {
  createPost(
    authorId: "cjur4185307sq0106c5uy3wyh"
    imageUrl: "https://images.unsplash.com/photo-1555847166-ca9cd76d2490"
  ) {
    id
    author {
      id
      name
    }
    imageUrl
  }
}

mutation {
  createPost(
    authorId: "cjur4wgyl0b94014663afke1p"
    imageUrl: "https://images.unsplash.com/photo-1555851457-ac7a2e726e8d"
  ) {
    id
    author {
      id
      name
    }
    imageUrl
  }
}

mutation {
  createComment(
    postId: "cjur4y17m0asx01234iwn30rv"
    authorId: "cjur4185307sq0106c5uy3wyh"
    content: "Great picture!"
  ) {
    id
    createdAt
    content
  }
}

mutation {
  createComment(
    postId: "cjur4y17m0asx01234iwn30rv"
    authorId: "cjur4wgyl0b94014663afke1p"
    content: "Thanks :)"
  ) {
    id
    createdAt
    content
  }
}

{
  allPosts(orderBy: createdAt_DESC) {
    id
    createdAt
    imageUrl
    author {
      id
      name
    }
    comments(orderBy: createdAt_DESC) {
      id
      createdAt
      author {
        id
        name
      }
      content
    }
  }
}

types.graphql

type User @model {
  id: ID! @isUnique
  name: String

  posts: [Post!]! @relation(name: "UserPosts")
  comments: [Comment!]! @relation(name: "UserComments")
}

type Post @model {
  id: ID! @isUnique
  createdAt: DateTime!

  author: User! @relation(name: "UserPosts")
  imageUrl: String!

  comments: [Comment!]! @relation(name: "PostComments")
}

type Comment @model {
  id: ID! @isUnique
  createdAt: DateTime!
  content: String!

  post: Post! @relation(name: "PostComments")
  author: User! @relation(name: "UserComments")
}