I'm trying to get a simple count of objects returned by REST get request from the server to use in another controller in Ember.js
For this reason I need to make an additional request to the server. Basically here's my code and it almost works.. but not quite yet. Maybe someone can figure out why.
It return a PromiseArray, that's why I'm using .then() to access the properties .
App.TestController = Ember.ObjectController.extend({
totalCount: function() {
return this.store.find('question', {test: this.get('id')}).then(function(items) {
var count = items.get('content').get('length');
console.log(count); // This actually logs correct values
return count;
})
}.property('question')
})
It does what it suppose to do and I'm getting correct values printed out in the console.log(), but when I try to use {{totalCount}} in the view template I'm getting [object Object] instead of an integer.
Also, am I properly observing the questions property? if the value changes in its proper controller will the value update?
Thanks
I'm trying to get a simple count of objects returned by REST get request from the server to use in another controller in Ember.js
For this reason I need to make an additional request to the server. Basically here's my code and it almost works.. but not quite yet. Maybe someone can figure out why.
It return a PromiseArray, that's why I'm using .then() to access the properties .
App.TestController = Ember.ObjectController.extend({
totalCount: function() {
return this.store.find('question', {test: this.get('id')}).then(function(items) {
var count = items.get('content').get('length');
console.log(count); // This actually logs correct values
return count;
})
}.property('question')
})
It does what it suppose to do and I'm getting correct values printed out in the console.log(), but when I try to use {{totalCount}} in the view template I'm getting [object Object] instead of an integer.
Also, am I properly observing the questions property? if the value changes in its proper controller will the value update?
Thanks
Share Improve this question edited Feb 26, 2014 at 17:51 kernelpanic asked Feb 23, 2014 at 19:54 kernelpanickernelpanic 2,9563 gold badges37 silver badges61 bronze badges 1- possible duplicate of Rendering resolved promise value in Ember handlebars template – aemxdp Commented Feb 23, 2014 at 20:01
2 Answers
Reset to default 8The problem you are seeing is because your are returning a promise as the value of the property and handlebars won't evaluate that promise for you. What you need to do is create a separate function that observes question and then call your store there to update the totalCount-property. It would be something like this.
App.TestController = Ember.ObjectController.extend({
totalCount: 0,
totalCountUpdate: function() {
var that = this;
this.store.find('question', {test: this.get('id')}).then(function(items) {
var count = items.get('content').get('length');
console.log(count);
that.set('totalCount', count);
})
}.observes('question')
})
Alternatively totalCount might lazily set itself, like this:
App.TestController = Ember.ObjectController.extend({
totalCount: 0,
question: // evaluate to something,
totalCount: function() {
var that = this;
that.store.find('question', {test: that.get('id')}).then(function(items) {
var count = items.get('content').get('length');
that.set('totalCount', count);
})
}.observes('question').property()
})