How to make wrapped jQuery promise fire the reject callback on error? - ajax

Question

I'm wrapping a simple jQuery promise with RSVP and noticed that when I cause an error on purpose the failure callback is never invoked. I assume it's because when you use vanilla jQuery and the callback throws an error, the returned promise will not be moved to failed state (the opposite of the spec).
If I need to use jQuery $.ajax but I want to get true resolve/reject callbacks with RSVP what (if anything) can I do to the example below?
var peoplePromise = new Ember.RSVP.Promise(function(resolve, reject) {
$.getJSON('/api/people/', resolve).fail(reject).error(reject);
});
var catPromise = new Ember.RSVP.Promise(function(resolve, reject) {
$.getJSON('/api/cats/', resolve).fail(reject).error(reject);
});
Ember.RSVP.all([peoplePromise, catPromise]).then(function(things) {
things[0].forEach(function(hash) {
var thing = App.Person.create(hash);
Ember.run(self.people, self.people.pushObject, thing);
});
things[1].forEach(function(hash) {
var wat = hash.toJSON(); //this blows up
var thing = App.Person.create(hash);
Ember.run(self.people, self.people.pushObject, thing);
});
}, function(value) {
alert(value.status + ": promise failed " + value.responseText);
});

Answer 1

Example here: http://www.youtube.com/watch?feature=player_detailpage&v=g5CSaK3HqVA#t=1080
var ajaxPromise = function(url, options){
return Ember.RSVP.Promise(function(resolve, reject) {
var options = options || {};
options.success = function(data){
resolve(data);
};
options.error = function(jqXHR, status, error){
reject([jqXHR, status, error]);
};
$.ajax(url, options);
});
};
var peoplePromise = ajaxPromise('/api/people/',{
dataType: "json"
});
var catPromise = ajaxPromise('/api/cats/',{
dataType: "json"
});
Ember.RSVP.all([peoplePromise, catPromise]).then(function(things) {
things[0].forEach(function(hash) {
var thing = App.Person.create(hash);
Ember.run(self.people, self.people.pushObject, thing);
});
things[1].forEach(function(hash) {
var wat = hash.toJSON(); //this blows up
var thing = App.Person.create(hash);
Ember.run(self.people, self.people.pushObject, thing);
});
}, function(args) {
var jqXHR = args[0];
alert(jqXHR.status + ": promise failed " + jqXHR.responseText);
});
http://emberjs.jsbin.com/aREDaJa/1/