Removing a field from a collection using firebase-admin: Tips and tricks

Question

Removing a field from a collection using firebase-admin: Tips and tricks

I currently have a collection stored in Firebase Realtime Database structured like this:

https://i.sstatic.net/jNiaO.png

My requirement is to remove the first element (the one ending with Wt6J) from the database using firebase-admin.

Below is the code snippet I tried, but it didn't work as expected:

const deleteNotification = () => {
  const key1 = 'FhN6Ntw8gyPLwJYVzcHy0E8Wq5z2';
  const key2 = '-MzGhZ2psGLivIfTWt6J';
  const notsRef = db.ref(`notifications/${key1}/${key2}`);
  notsRef.remove();
};

Can anyone suggest the correct method to use for deleting a specific field? Any insights on how I can achieve this task?

javascript typescript firebase firebase-realtime-database

Answer 1

Answer №1

In this scenario, using await within a try catch block would be my recommended approach. The await keyword initiates a new thread and waits for it to finish before continuing execution. As mentioned by others previously, it's possible that your cloud function is being terminated before the removal process completes.

const removeNotification = async () => {
  try{
    const key1 = 'Ajd903lCnZkq28FhP0YdsMwQ92s';
    const key2 = '-Kj4TzH7gEplL42mNt8R';
    const notifRef = db.ref(`notifications/${key1}/${key2}`);
    await notifRef.remove();
  } catch( error ) {
    console.log( 'Failed to delete record.' );
    console.log( error );
  }
  console.log( 'Record deletion successful.' );
};

Answer 2

In this scenario, using await within a try catch block would be my recommended approach. The await keyword initiates a new thread and waits for it to finish before continuing execution. As mentioned by others previously, it's possible that your cloud function is being terminated before the removal process completes.

const removeNotification = async () => {
  try{
    const key1 = 'Ajd903lCnZkq28FhP0YdsMwQ92s';
    const key2 = '-Kj4TzH7gEplL42mNt8R';
    const notifRef = db.ref(`notifications/${key1}/${key2}`);
    await notifRef.remove();
  } catch( error ) {
    console.log( 'Failed to delete record.' );
    console.log( error );
  }
  console.log( 'Record deletion successful.' );
};

Removing a field from a collection using firebase-admin: Tips and tricks

Answer №1

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