javascript - Is it possible to rename a key in the Firebase Realtime Database? -

i wondering, there way update key value?

let´s use following data:

i using set() write data. now, want user edit booktitle , needs change on both places. tried using update() can´t seem make work. can edit booktitle in bookinfo not on books.

moving not option because erase bookdata. tried writing using push() then, can´t search because don´t have pushid (i need search because users can't have 2 books same name)

so, there way update key value? or, there better approach this? accept suggestions. thank you!

update: i´m using update book title inside bookinfo

var bookname = document.getelementbyid('bookname').value;  firebase.database().ref('books/' + bookname + '/bookinfo').update({     booktitle : bookname }); 

i think see you're trying do. firebase doesn't have concept of "renaming" part of path via update. instead have remove existing node , recreate it. can so:

var booksref = firebase.database().ref('books'); booksref.child(oldtitle).once('value').then(function(snap) {   var data = snap.val();   data.bookinfo.booktitle = newtitle;   var update = {};   update[oldtitle] = null;   update[newtitle] = data;   return booksref.update(update); }); 

this remove info books/oldtitle , re-populate new title in books/newtitle.

caveat: relies on reading data , performing second async update. if have multiple users operating on same data @ same time cause issues. use transaction atomically if /books top-level resource many nodes may cause performance problems.

if 1 person edit data @ time, above solution fine. if not, may want consider using non-user-controlled identifier such push id.