Return interdependent async promises in $routeProvider resolve - angularjs

Question

Consider the code:
var myApp = angular.module('myApp', []);
The routes:
myApp.config(['$routeProvider', function($routeProvider) {
$routeProvider.when('/', {
templateUrl: 'app.html',
controller:myAppController,
resolve:{
resolveData:function(Resolver){
return Resolver();
}
}
});
});
Resolve:
myApp.factory('Resolver', ['$http', function($http){
return function(){
return $http({url: '/someurl',method: "GET"}).then(function(data) {
// dependent call 1
$http({url: '/someotherurl',method: "GET" }).then(function(data) {
});
// dependent call 2
$http({url: '/someanotherurl',method: "GET" }).then(function(data) {
});
});
}
}]);
Above I have nested 2 calls inside one as they are dependent on the data returned by the parent call.
What I want to do: return the Resolver when all of them have completed and not just the parent call.
I cannot use $q.all() because 2 of the calls are dependent of the first call.
In short, myAppController must be loaded only after all the 3 calls have completed.

Answer 1

You should be using chaining promise and $q service to solve your problem .Just use the below sample code it should work
myApp.factory('Resolver', ['$http','$q', function ($http,$q) {
return function () {
var deferred = $q.defer();
$http({ url: '/someurl', method: "GET" }).then(function (data) {
return $http({ url: '/someurl', method: "GET" })
}).then(function (data) {
return $http({ url: '/someanotherurl', method: "GET" })
}).then(function (data) {
deferred.resolve(data);
});
return deferred.promise;
}
}]);

Answer 2

This works for me:
resolve : {
message: function($q, $route, Restangular) {
var msgId = $route.current.params.msgId;
var deferred = $q.defer();
Restangular.one('message', msgId).get().then(function(message) {
Restangular.one('file', message.audioFile.id).get().then(function (blob) {
message.blob = blob;
deferred.resolve(message);
});
});
return deferred.promise;
}
}