Question 119967 in Firebase Question posted in
An extensive official documentation can be found here.

how to update sub collection's all fields on V9 firebase in reactJs

so im creating instagram clone and in the firebase docs trying to update the fields:

 const uploadPostOnline = (imageUrl, caption) => {
  const userRef = doc(db, "users", "posts");
  setDoc(
    userRef,
    { imageUrl: imageUrl },
    { caption: caption },
    { likes: 0 },
    { likesByUsers: [] },
    { comments: [] },
    { createdAt: serverTimestamp() },
    {}
  );
};

this is my firebase database picture:
enter image description here

I want my code to create a collection of "post" for every user with the fields i added.

EDITED: This is the screenshot i got after adding catch
pic

AGAIN EDITED: USERID

Again::: enter image description here

Security Rule Code:

       rules_version = '2';
     service cloud.firestore {
      match /databases/{database}/documents {
         function userIsAuthenticated(){
        return request.auth != null;
      }
       match /{path=**}/posts/{postId}{
        allow read, write : if userIsAuthenticated();
             }
        match /users/{userId}{
           allow read, write : if userIsAuthenticated();
        }
     }
      }
Tags:

2

Answers


  1. 0

    The setDoc() takes a DocumentReference as first parameter and a single object containing all the fields of your document as second. Try refactoring the code as shown below:

    const uploadPostOnline = (imageUrl, caption) => {
  const userRef = doc(db, "users", "posts");
  setDoc(
    userRef, {
      // 'imageUrl: imageUrl' is redundant as your property name and var name are name
      imageUrl, 
      caption,
      likes: 0,
      likesByUsers: [],
      comments: [],
      createdAt: serverTimestamp()
    }
  );
};
    Login or Signup to reply.
  2. 0

    I want my code to create a collection of "post" for every user with
    the fields I added.

    You need to use the ID of the user to add a post document in a subcollection, as follows:

      const userId = ...  // For example auth.currentUser.uid (check that value is not undefined, see https://firebase.google.com/docs/auth/web/manage-users#get_the_currently_signed-in_user)
  const collectionRef = collection(db, "users", userId, "posts");
  addDoc(collectionRef, {
      imageUrl, 
      caption,
      likes: 0,
      likesByUsers: [],
      comments: [],
      createdAt: serverTimestamp()
    });
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search