rtdb_social_write_fan_out.js

// This snippet file was generated by processing the source file:
// ./database-next/read-and-write.js
//
// To update the snippets in this file, edit the source and then run
// 'npm run snippets'.

// [START rtdb_social_write_fan_out_modular]
function writeNewPost(uid, username, picture, title, body) {
  const db = getDatabase();

  // A post entry.
  const postData = {
    author: username,
    uid: uid,
    body: body,
    title: title,
    starCount: 0,
    authorPic: picture
  };

  // Get a key for a new Post.
  const newPostKey = push(child(ref(db), 'posts')).key;

  // Write the new post's data simultaneously in the posts list and the user's post list.
  const updates = {};
  updates['/posts/' + newPostKey] = postData;
  updates['/user-posts/' + uid + '/' + newPostKey] = postData;

  return update(ref(db), updates);
}
// [END rtdb_social_write_fan_out_modular]