CODEWITHSUNDEEP
javascriptfirebasereact-nativefirebase-realtime-database
muklah
muklah

Reputation: 865

Add multiple data to object for specific id in firebase using react native

I have a firebase realtime database and this this the structure of it:

enter image description here

you can see there is only one user with "hgjfj" userName and I want to add another users in same queue object of each barber using react native

this is the function of adding data:

NewBooking() {
        var queue = { userName: 'gfdgdfg', userPhone: 54535 }
      firebase.database().ref('Barbers/').push({
        queue: queue
      }).then((data) => {
        //success callback
        console.log('data ', data)
      }).catch((error) => {
        //error callback
        console.log('error ', error)
      })
  }

is there a way to get the generated id by firebase like get the LWC312750NY35f3YKEL and push new user on the queue of that id

Upvotes: 0

Views: 3024

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 598765

Your current queue is not a queue at all, but a single object with a single pair of properties. If you want to store a list of objects for each barber, then queue should be a collection.

To add an such an object to each barber's queue, you will first need to read all barbers, then loop over the results, and finally add the object to each queue.

Something like this:

var newItem = { userName: 'gfdgdfg', userPhone: 54535 }
firebase.database().ref('Barbers').once('value').then(function(snapshot) {
  snapshot.forEach(function(barberSnapshot) {
    barberSnapshot.child('queue').ref.push(newItem);
  });
});

If you know the ID of the barber whose queue you want to add it to, the code can be a lot simpler:

var newItem = { userName: 'gfdgdfg', userPhone: 54535 }
firebase.database().ref('Barbers/UIDofBarber/queue').push(newItem);

If you want to clear out the queue for each barber, to get rid of the faulty object you have in there now:

firebase.database().ref('Barbers').once('value').then(function(snapshot) {
  snapshot.forEach(function(barberSnapshot) {
    barberSnapshot.child('queue').ref.remove();
  });
});

By the way, you're violating one of the recommendations from the Firebase documentation, which is to keep your data structure flat. Right now the code above needs to read both the metadata about each barber and the queue, while it really only needs to access the queue. I recommend creating to top-level collections: one for the metadata about each barber, and one for their queue:

barbers
  barberUID1: { ... }
  barberUID2: { ... }
queues
  barberUID1: {
    queuePushID11: { ... }
    queuePushID12: { ... }
  }
  barberUID2: {
    queuePushID21: { ... }
    queuePushID22: { ... }
  }

Upvotes: 3

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