GraphQL Cheat Sheet

GraphQl.js

# GraphQL Cheat Sheet (with Pagination)

# Defining types
type User {
  id: ID!
  username: String!
  posts: [Post!]!
}

type Post {
  id: ID!
  title: String!
  content: String!
  author: User!
}

# Querying data with pagination
query {
  getUser(id: ID!): User
  getAllPosts(first: Int, after: String): PostConnection!
}

# Pagination-related types
type PageInfo {
  hasNextPage: Boolean!
  endCursor: String
}

type PostEdge {
  cursor: String!
  node: Post!
}

type PostConnection {
  edges: [PostEdge!]!
  pageInfo: PageInfo!
}

# Requesting specific fields
query {
  getAllPosts(first: 10) {
    edges {
      node {
        title
      }
    }
  }
}

# Fetching more pages
query {
  getAllPosts(first: 10) {
    edges {
      node {
        title
      }
      cursor
    }
    pageInfo {
      hasNextPage
      endCursor
    }
  }
}

# Fetching next page with cursor
query {
  getAllPosts(first: 10, after: "cursorValue") {
    edges {
      node {
        title
      }
      cursor
    }
    pageInfo {
      hasNextPage
      endCursor
    }
  }
}

# Mutation to create a post
mutation {
  createPost(title: String!, content: String!, authorId: ID!): Post
}

# Mutation to update a post
mutation {
  updatePost(id: ID!, title: String, content: String): Post
}

# Mutation to delete a post
mutation {
  deletePost(id: ID!): Boolean
}

# Subscription for new posts (if supported)
subscription {
  newPost: Post
}