How to bind value form input select to attribute in controller

Question

I try to bind value from input select to attribute \"selectedValue\" in controller.

This is app.js

Food = Ember.Application.create();

Food.appsContr         


        

Answer 1

Jumping off from the solution for @pangrantz, this Fiddle example (http://jsfiddle.net/bsyjr/) illustrates some improvements: The Handlebars code is cleaner through the use of tagName. When tagName is set to "select", the child views automatically become "option" elements. See the Ember.CollectionView.CONTAINER_MAP in https://github.com/emberjs/ember.js/blob/master/packages/ember-views/lib/views/collection_view.js to understand why. On the Javascript side, by specifying an itemViewClass, we can add the value attribute to the option element.

Food = Ember.Application.create();

Food.SelectView = Ember.CollectionView.extend({
    value: null,
    itemViewClass: SC.View.extend({
        attributeBindings:['value'],
        valueBinding: 'content.value'
    }),

    valueChanged: function(){
        this.$().val( this.get('value') );
    }.observes('value'),

    didInsertElement: function(){
        var self = this;
        this.$().change(function(){
            var val = $('select option:selected').val();
            self.set('value', val);
        });
    }
});

Food.appsController = Ember.Object.create({
  selectedValue: ""
});

Food.Todo = Ember.Object.extend({
  title: null,
  value: null
});

Food.foodController = Ember.ArrayProxy.create({
  content: []
});

Food.foodController.pushObject(Food.Todo.create({title:"a", value:"1"}));
Food.foodController.pushObject(Food.Todo.create({title:"b", value:"2"}));
Food.foodController.pushObject(Food.Todo.create({title:"c", value:"3"}));

There is still room for improvement in the event handling, which is not using Ember's event framework, and it would make a lot of sense to use a custom written SelectView that doesn't leverage Handlebars, since IMO, it is dubious how much value Handlebars adds in this case.