TodoMVC with ember, id does not increment

Question

I am following the getting started guide from emberjs, and am at the point where I can add todos. My problem is though that when I add a todo it has an id value of null - is there a practical way to auto increment this?

var TodosController = Ember.ArrayController.extend({
actions: {
    createTodo: function() {
        var title = this.get('newTitle');
        if (!title.trim()) {
            return;
        }

        var todo = this.store.createRecord('todo', {
            title: title,
            isCompleted: false
        });

        this.set('newTitle', '');

        todo.save();
    }
}

});

score 3 · Accepted Answer · answered Mar 03 '15 at 21:38

When you call this.store.createRecord() you have an "option" to have an id autogenerated (see here) Ultimately though, that responsibility is delegated to an adapter. If your adapter has generateIdForRecord() method - this will be used to create an id. So, for example, FixtureAdapter implements this method as follows (see here):

generateIdForRecord: function(store) {
  return "fixture-" + counter++;
}

ember-data uses RestAdapter by default (see here), so you would need to add the method for the id to be generated on the client...

TodoMVC with ember, id does not increment

1 Answers1