CODEWITHSUNDEEP
javascriptfirebasefirebase-realtime-database
WebbH
WebbH

Reputation: 2422

Firebase order when using update()

I'm doing a simple push of some data in an array using a for loop that looks like this 

for(let i=0; i<dataArray.length-1; i+=2){
      ref.child('data').update({[dataArray[i]]: dataArray[i+1]});
    }

Looking at my data after completion, it appears that it has been uploaded in alphabetical order by key. Is this a feature of the update() function? Is there a way to get it to stay in the order of the array (AKA the order in which it is sent)?

Upvotes: 0

Views: 227

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 599001

Firebase keys are shown in alphabetical/lexicographical order by the Firebase Database console. There is no way to change this.

If you want to add them in the order they are in the array, I recommend calling push() for each item. This generates a unique key (called a push ID) for each item, and those keys are order. While push IDs are not as easy to scan as array indices, they have many advantages in a realtime, multi-user, possibly offline system, such as Firebase.

Upvotes: 1

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