AngularJS route resolve to retrieve $http data using the id parameter

Question

AngularJS route resolve to retrieve $http data using the id parameter

My application has multiple screens and controllers that rely on data from servers. I want to use the router resolve functionality to ensure that all data dependencies are resolved before rendering the screen. However, I am facing an issue with the example provided below. Can you help me understand why it is not working properly?

angular.module('app',['ngRoute'])
    .service('Data1', function ($q, $routeProvider, $http) {
        var self = this;

        this.fetch = function() {return $http.get('/json/data1',{id:$routeProvider.id})}
    }
    .service('Data2', function ($q, $routeProvider, $http) {
        var self = this;
        this.fetch = function() {return $http.get('/json/data2',{id:$routeProvider.id})}
    }
    .config(function($routeProvider){
        §routeProvider.when('/:id',{
            controller:'TestCtrl',
            templateUrl:'template.html',
            resolve: {
                data1: function (Data1) { return Data1.fetch(); },
                data1: function (Data2) { return Data2.fetch(); }
            }

        });
    })
    .controller('TestCtrl', function($location, $routeParams, $http, data1,data2) {
        console.log(data1);
        console.log(data2);
    });

javascript angularjs

Answer 1

Answer №1

Here's a demonstration showcasing the correct usage of resolve with $routeProvider. Firstly, I established two factories similar to the ones you provided. In my configuration settings, I defined a route where I intend to inject data from these factories. I specified the controller and template, but the focus is on the resolve section, where I assigned two functions - someData and someMoreData. Within these functions, I utilized the data1 and data2 factories along with $routeParams to fetch and return the data.

Within the controller definition, I requested injection of $scope and the two resolve properties previously set in $routeProvider.

It's essential to note that if your factories involve API calls for resolving data, the page loading process will pause until this data retrieval is complete. The controller will not initialize until all processes are finished. Consider implementing a loading animation while waiting for the data, which can be achieved with various examples found on StackOverflow.

angular.module('app.factories', [])
  .factory('data1', ['$q', '$timeout', function($q, $timeout) {
    // Factory code for data1 here
  }])
  .factory('data2', ['$q', '$timeout', function($q, $timeout) {
    // Factory code for data2 here
  }]);

angular.module('app', ['ngRoute', 'app.factories'])
  .config(['$routeProvider',
    function($routeProvider) {
      // Route configuration using $routeProvider
    }
  ])
  .controller('defaultCtrl', function() { })
  .controller('testCtrl', ['$scope', 'someData', 'someMoreData',
    function($scope, someData, someMoreData) {
      // Controller logic here
    }
  ]);

<!DOCTYPE html>
<html ng-app="app">

<head>
  <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"></script>
  <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular-route.min.js"></script>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>

<body>
  <div ng-view>

  </div>
</body>

</html>

Edit Updated the structure so that factories reside in their own module and are injected as dependencies to the app module for improved architecture (typically each factory should have its own module).

Answer 2

Here's a demonstration showcasing the correct usage of resolve with $routeProvider. Firstly, I established two factories similar to the ones you provided. In my configuration settings, I defined a route where I intend to inject data from these factories. I specified the controller and template, but the focus is on the resolve section, where I assigned two functions - someData and someMoreData. Within these functions, I utilized the data1 and data2 factories along with $routeParams to fetch and return the data.

Within the controller definition, I requested injection of $scope and the two resolve properties previously set in $routeProvider.

It's essential to note that if your factories involve API calls for resolving data, the page loading process will pause until this data retrieval is complete. The controller will not initialize until all processes are finished. Consider implementing a loading animation while waiting for the data, which can be achieved with various examples found on StackOverflow.

angular.module('app.factories', [])
  .factory('data1', ['$q', '$timeout', function($q, $timeout) {
    // Factory code for data1 here
  }])
  .factory('data2', ['$q', '$timeout', function($q, $timeout) {
    // Factory code for data2 here
  }]);

angular.module('app', ['ngRoute', 'app.factories'])
  .config(['$routeProvider',
    function($routeProvider) {
      // Route configuration using $routeProvider
    }
  ])
  .controller('defaultCtrl', function() { })
  .controller('testCtrl', ['$scope', 'someData', 'someMoreData',
    function($scope, someData, someMoreData) {
      // Controller logic here
    }
  ]);

<!DOCTYPE html>
<html ng-app="app">

<head>
  <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"></script>
  <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular-route.min.js"></script>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>

<body>
  <div ng-view>

  </div>
</body>

</html>

Edit Updated the structure so that factories reside in their own module and are injected as dependencies to the app module for improved architecture (typically each factory should have its own module).

AngularJS route resolve to retrieve $http data using the id parameter

Answer №1

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