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Angular Ui-Router TemplateProvider Never Called Despite Returning A Promise

This question is similar to this: Angular ui-router templateProvider never called except in my case I am returning a promise and it still isn't working. The xhr request is never fired.
app.config(function($stateProvider, $urlRouterProvider){
// For any unmatched url, send to /content
$urlRouterProvider.otherwise("/content")
$stateProvider.state('map1', {
url: "/content/sectionI",
templateProvider: function($http, $stateParams) {
return $http({
method: 'GET',
url: '/contentMore',
params: {request:"Section_I_Unlocked",part:"map"}
}).then(function successCallback (html){
return html.data;
});
}
});
});
What am I doing wrong? I see the url change when I click on state map1 but the templateProvider never fires?

There is a working plunker
I adjusted a bit the url path (but mostly for plunker purposes, not sure how your server is configured), and the concept as is is working:
$stateProvider.state('map1', {
url: "/content/sectionI",
templateProvider: function($http, $stateParams) {
return $http({
method: 'GET',
url: 'contentMore.html',
params: {
request: "Section_I_Unlocked",
part: "map"
}
}).then(function successCallback(html) {
return html.data;
});
}
});
Check it in action here
There are even more easy ways how to load data.. e.g. with combination templateProvider and $templateRequest:
Using templateRequest in angular + typescript ($templateRequest not a function)
Angular ui.router reload parent templateProvider

Angular not displaying $scope data with ng repeat passed in controller. No errors too

In this project, I am executing a query on click list item of ionic. I am getting the data from php json_encode. The data is getting displayed in the networks tab under response. Also, I have added $scope.doctorList = {}; and after that wrote this line $scope.doctorList = response which comes from success function. The data is getting displayed in console.log($scope.doctorList) as well.
Now when I try to display this data in angular, it does not show anything.
I have included it in ng-repeat as : ng-repeat = "doctors in doctorList"
The syntax seems to be correct as the same thing is working for another controller but here, I can't retrieve the data. The page goes blank and there is no error in console / netowrks tab.
I am using one controller for two html files. Please help
Here is the routes file
angular.module('app.routes', []).config(function ($stateProvider, $urlRouterProvider, $ionicConfigProvider) {
$stateProvider.state('homeselect', {
url: '/home-select',
templateUrl: 'templates/homeselect.html',
controller: 'homeCtrl'
});
$stateProvider.state('home', {
url: '/home',
templateUrl: 'templates/home.html',
controller: 'homeCtrl'
});
});
Here is the controller
angular.module('app.controllers', []).controller('homeCtrl', function ($scope, $http, $ionicSideMenuDelegate, myServices, $window) {
$ionicSideMenuDelegate.toggleLeft();
$scope.loadDoc = function (type) {
$http({
url: "http://localhost/drmedic/retrieve_details_type.php",
method: "POST",
data: {
data: type
}
}).success(function (response) {
$scope.doctorList = {};
$scope.doctorList = response;
$window.location.href = '#/home-select';
});
};
$http({method: 'GET', url: 'http://localhost/drmedic/retrieve_details.php'}).success(function (data) {
$scope.contents = {};
$scope.contents = data;
});
});
Here is the html file code for ng-repeat
<ion-list ng-repeat="doctors in doctorList">
<ion-item>
<center>
{{doctors.name}}<br>
{{doctors.fees}}
</center>
</ion-item>
</ion-list>

You can use service.Open a file called service.js.After that this inject to app.js. I revised the code as follows:
Service.js:
angular.module('app.services', [])
.factory("AppService", function ($http) {
var AppService= {};
AppService.GetDetails = function (data) {
return $http({
url: "http://localhost/drmedic/retrieve_details_type.php",
method: "POST",
data: {
data: data
}
});
return AppService;
}
controller.js:
.controller('homeCtrl',function($scope,$http,$ionicSideMenuDelegate,myServices,$window,AppService) {
$ionicSideMenuDelegate.toggleLeft();
$scope.loadDoc = function(type){
AppService.GetDetails({type:type}).success(function (response) {
$scope.doctorList = {};
$scope.doctorList = response;
$window.location.href = '#/home-select';
})
.error(function (err) {
console.log(err);
});
}
});

ng-repeat iterates through a collection of items, create its own scope and renders it on UI. When I say collections, it should be an array.
https://docs.angularjs.org/api/ng/directive/ngRepeat
Please check the data-type for doctorList, which I believe is an array.
$scope.doctorList = [];
I hope this should solve the problem, if not please share the code I'll take a deep look into it.

Passing information previously retrieved to templateProvider in AngularJS

I'm using AngularJS 1.3 and UI-Router. I have an state in which i have a resolve and a templateProvider.
What i'm trying to accomplish is that the information retrieved from database in the resolve can be used by the templateProvider. Right now, I have to get the information twice, once from resolve and another from templateProvider, and that's annoying.
The code:
.state('articleurl', {
url: '/:articleUrl',
resolve: {
article: function ($http, $stateParams, $location) {
return $http({
method: 'GET',
url: '/articles/' + $stateParams.articleUrl
})
.then(function (article) {
return article;
}, function (error) {
$location.path('/404');
});
},
loggedin: checkLoggedin
},
templateProvider: ['$templateFactory', '$stateParams', '$http', function ($templateFactory, $stateParams, $http) {
return $http({
method: 'GET',
url: '/articles/' + $stateParams.articleUrl
}).then(function(article) {
if ( article.data.template )
return $templateFactory.fromUrl('articles/views/templates/' + article.data.template + '.html');
else
return $templateFactory.fromUrl('articles/views/templates/news.html');
});
}],
controller: 'ArticlesViewController'
})
As you can see, according to article's kind i load a different template in the templateProvider. Besides, i use the article's information in the controller which has been previously got in the state's resolve.
Is there any way to use in the templateProvider the information previously fetched in the resolve avoiding this way another call to database?
Right now, it is doing 2 calls to database per connection...
Thanks!

app.factory('article', function ($cacheFactory){
var articleCache = $cacheFactory('article');
return function (url) {
return articleCache.get(url) || articleCache.put(url, $http({
method: 'GET',
url: '/articles/' + url
})
);
};
});
Use it as article($stateParams.articleUrl).then(...) in both places, that will keep the things DRY. You may get better control over the cache (e.g. expiration) by replacing $cacheFactory with angular-cache.
$http own caching may be successfully used as well instead of explicit caching:
If there are multiple GET requests for the same URL that should be
cached using the same cache, but the cache is not populated yet, only
one request to the server will be made and the remaining requests will
be fulfilled using the response from the first request.

I think you can inject directly the resolved variables, so you could inject article in templateProvider:
.state('articleurl', {
url: '/:articleUrl',
resolve: {
article: function ($http, $stateParams, $location) {
return $http({
method: 'GET',
url: '/articles/' + $stateParams.articleUrl
})
.then(function (article) {
return article;
}, function (error) {
$location.path('/404');
});
},
loggedin: checkLoggedin
},
templateProvider: ['$templateFactory', '$stateParams', '$http', 'article', function ($templateFactory, $stateParams, $http, article) {
// Now here you can use article without the need to re-call it
}],
controller: 'ArticlesViewController'
})

service that run $http for controllers

I have multiple controllers that need to use my custom service which use $http. I did something like this
.service('getDB', function($http){
return {
fn: function(){
return $http({
url: "http://example.com",
method: "GET"
});
}
}
})
.controller('myCtrl', function($scope, getDB) {
console.log(getDB.fn());
}
In my console.log of getDB.fn() I see $promise, how can I get the response data?

$http returns a promise. Its implementation can be understood here :
$q
In order to use your promise, you have to do the following :
.controller('myCtrl', function($scope, getDB) {
getDB.fn(something).then(function(result){
// The result can be accessed here
}, function(error){
//If an error happened, you can handle it here
});
}
here is the way you can pass parameters :
.service('getDB', function($http){
return {
fn: function(something){
return $http({
url: "http://example.com/" + something,
method: "GET"
});
}
}
})

AngularJS: Call a particular function before any partial page controllers

I want to call a particular function: GetSession() at the beginning of my application load. This function makes a $http call and get a session token: GlobalSessionToken from the server. This session token is then used in other controllers logic and fetch data from the server. I have call this GetSession()in main controller: MasterController in $routeChangeStart event but as its an asynchronous call, my code moves ahead to CustomerController before the $http response.
Here is my code:
var GlobalSessionToken = ''; //will get from server later
//Define an angular module for our app
var myApp = angular.module('myApp', ['ngRoute']);
//Define Routing for app
myApp.config(['$routeProvider', function ($routeProvider) {
$routeProvider.
when('/customer', {
templateUrl: 'partials/customer.html',
controller: 'CustomerController',
resolve: {
loadData: function($q){
return LoadData2($q,'home');
}
}
}).
otherwise({
redirectTo: '/home'
});
}]);
//controllers start here and are defined in their each JS file
var controllers = {};
//only master controller is defined in app.js, rest are in separate js files
controllers.MasterController = function($rootScope, $http){
$rootScope.$on('$routeChangeStart', function(){
if(GlobalSessionToken == ''){
GetSession();
}
console.log('START');
$rootScope.loadingView = true;
});
$rootScope.$on('$routeChangeError', function(){
console.log('ERROR');
$rootScope.loadingView = false;
});
};
controllers.CustomerController = function ($scope) {
if(GlobalSessionToken != ''){
//do something
}
}
//adding the controllers to myApp angularjs app
myApp.controller(controllers);
//controllers end here
function GetSession(){
$http({
url: GetSessionTokenWebMethod,
method: "POST",
data: "{}",
headers: { 'Content-Type': 'application/json' }
}).success(function (data, status, headers, config) {
GlobalSessionToken = data;
}).error(function (data, status, headers, config) {
console.log(data);
});
}
And my HTML has following sections:
<body ng-app="myApp" ng-controller="MasterController">
<!--Placeholder for views-->
<div ng-view="">
</div>
</body>
How can I make sure this GetSession() is always called at the very beginning of my application start and before any other controller calls and also called only once.
EDIT: This is how I added run method as per Maxim's answer. Still need to figure out a way to wait till $http call returns before going ahead with controllers.
//Some initializing code before Angular invokes controllers
myApp.run(['$rootScope','$http', '$q', function($rootScope, $http, $q) {
return GetSession($http, $q);
}]);
function GetSession($http, $q){
var defer = $q.defer();
$http({
url: GetSessionTokenWebMethod,
method: "POST",
data: "{}",
headers: { 'Content-Type': 'application/json' }
}).success(function (data, status, headers, config) {
GlobalSessionToken = data;
defer.resolve('done');
}).error(function (data, status, headers, config) {
console.log(data);
defer.reject();
});
return defer.promise;
}

Even though some of the solutions here are perfectly valid, resolve property of the routes definition is the way to go, in my opinion. Writing your app logic inside session.then in every controller is a bit too much , we're used such approach too in one of the projects and I didn't work so well.
The most effective way is to delay controller's instantiation with resolve, as it's a built-in solution. The only problem is that you have to add resolve property with similar code for every route definition, which leads to code duplication.
To solve this problem, you can modify your route definition objects in a helper function like this:
function withSession(routeConfig) {
routeConfig.resolve = routeConfig.resolve || {};
routeConfig.resolve.session = ['getSessionPromise', function(getSessionPromise) {
return getSessionPromise();
}]
return routeConfig;
}
And then, where define your routes like this:
$routeProvider.when('/example', withSession({
templateUrl: 'views/example.html',
controller: 'ExampleCtrl'
}));
This is one of the many solutions I've tried and liked the most since it's clean and DRY.

You can't postpone the initialisation of controllers.
You may put your controller code inside a Session promise callback:
myApp.factory( 'session', function GetSession($http, $q){
var defer = $q.defer();
$http({
url: GetSessionTokenWebMethod,
method: "POST",
data: "{}",
headers: { 'Content-Type': 'application/json' }
}).success(function (data, status, headers, config) {
GlobalSessionToken = data;
defer.resolve('done');
}).error(function (data, status, headers, config) {
console.log(data);
defer.reject();
});
return defer.promise;
} );
myApp.controller( 'ctrl', function($scope,session) {
session.then( function() {
//$scope.whatever ...
} );
} );
Alternative: If you don't want to use such callbacks, you could have your session request synchronous, but that would be a terrible thing to do.

You have not provided any details related to GetSession. For scenarios like this you should use the resolve property while defining your routes in $routeProvider. I see you are using resolve already.
What you can do now is to wrap the GlobalSessionToken into a Angular service like GlobalSessionTokenServiceand call it in the resolve to get the token before the route loads. Like
resolve: {
loadData: function($q){
return LoadData2($q,'home');
},
GlobalSessionToken: function(GlobalSessionTokenService) {
return GlobalSessionTokenService.getToken() //This should return promise
}
}
This can then be injected in your controller with
controllers.MasterController = function($rootScope, $http,GlobalSessionToken){