How can I update inner data with specific id in firebase

Question

I am trying to update the node under promo id between apply and trigger location in firebase. it's not update same location where name already exists. It's disturb the ordering after update the name. I have tried method withupdate() but fail. Then setWithPrority() remove my other nodes(apply and trigger) and add only name node after update the name.Note data is already exist in firebase just update the name.

My script:

firebase.database().ref('/promotions/v1/' + site + '/'+ promoId).once('value').then(function (snapshot) {
  promo_data = snapshot.val();
  if (promo_data != null) {
    var refss = firebase.database().ref('/promotions/v1/' + site + '/'+ promoId );
    refss.child('/').update({"name":promoRuleName});
  }
});

My Output!
Note: I have not trigger and apply node.I have only promoRuleName string.

Expected Output!

.

Please help

Thanks in advance!

@Gabriel Diez under promoId But this name should be between apply and trigger and see second screenshot — Raheel Aslam, Aug 18 '17 at 10:05
Ok i see what you want but i don't understand why you want to do that.. — Gabriel Diez, Aug 18 '17 at 10:20
@Gabriel Diez i want to see text on original location after update the text .when i update the text my ordering is disturb. — Raheel Aslam, Aug 18 '17 at 10:26

score 1 · Answer 1 · answered Aug 18 '17 at 14:05

1

The ordering you see in the console is based on "priority-then-key". Since you called setWithPriority() the natural/alphabetical ordering is disturbed. I highly recommend not calling setWithPriority() anymore, the method is a relic from the past before Firebase supported orderByChild().

To fix the problem with your current data, you'll need to delete the priority from the node(s) where you have it. In the sample data you shared that can be accomplished with:

firebase.database().ref('/promotions/v1/22516/46/name').setPriority(null);

Also see: What does priority mean in Firebase?

answered Aug 18 '17 at 14:05

Frank van Puffelen

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Please provide proper script to for update data. above script add name at the end of node. My script does not update firebase: firebase.database().ref('/promotions/v1/' + site + '/'+ promoId+'/'+'name').setPriority(promoRuleName,5); – Raheel Aslam Aug 21 '17 at 05:49
can you explain this? – Raheel Aslam Aug 23 '17 at 09:17
Don't set priorities; clear them. My code shows how to do that. – Frank van Puffelen Aug 23 '17 at 12:24
thanks for reply but How to set priority between apply and trigger node please. – Raheel Aslam Aug 23 '17 at 13:27

score 0 · Accepted Answer · answered Aug 23 '17 at 14:15

This script is work correctly for ordering between apply and trigger node.try this.

    firebase.database().ref('/promotions/v1/' + site + '/'+ promoId).once('value').then(function (snapshot) {
            promo_data = snapshot.val();
            if (promo_data != null) {
                var refss = firebase.database().ref('/promotions/v1/' + site + '/'+ promoId + '/');
                // First null the prority of apply node then update name.
                firebase.database().ref('/promotions/v1/' + site + '/'+ promoId + '/'+'apply/').setPriority(null);
                refss.update({'name': promoRuleName});
            }

        });

First I null the priority of apply node then update the name using update() method.

How can I update inner data with specific id in firebase

2 Answers2