How do I update data in indexedDB?

html, indexeddb, javascript

Solution

Check out this jsfiddle for some examples on how to update IDB records. I worked on that with another StackOverflower -- it's a pretty decent standalone example of IndexedDB that uses indexes and does updates.

The method you seem to be looking for is `put`, which will either insert or update a record if there are unique indexes. In that example fiddle, it's used like this:

    phodaDB.indexedDB.addUser = function(userObject){
        //console.log('adding entry: '+entryTxt);
        var db = phodaDB.indexedDB.db;
        var trans = db.transaction(["userData"],IDBTransaction.READ_WRITE);
        var store = trans.objectStore("userData");
        var request = store.put(userObject);

        request.onsuccess = function(e){
            phodaDB.indexedDB.getAllEntries();
        };
        request.onerror = function(e){
            console.log('Error adding: '+e);
        };
    };

For what it's worth, you've got some possible syntax errors, misspelling "console" in `console.log` as "conosole".

Problem

I have tried to get some information from W3C regarding the update of an objectStore item in a indexedDB database, but with not so much susccess. I found here a way to do it, but it doesn't really work for me. My implementation is something like this ``` DBM.activitati.edit = function(id, obj, callback){ var transaction = DBM.db.transaction(["activitati"], IDBTransaction.READ_WRITE); var objectStore = transaction.objectStore("activitati"); var keyRange = IDBKeyRange.only(id); objCursor = objectStore.openCursor(keyRange); objCursor.onsuccess = function(e){ var cursor = e.target.result; console.log(obj); var request = cursor.update(obj); request.onsuccess = function(){ callback(); } request.onerror = function(e){ conosole.log("DBM.activitati.edit -> error " + e); } } objCursor.onerror = function(e){ conosole.log("DBM.activitati.edit -> error " + e); } } ``` I have all DBM.activitati.(add | remove | getAll | getById | getByIndex) methods working, but I can not resolve this. If you know how I can manage it, please, do tell! Thank you!

Original source