如何在Angular.JS的$ routeProvider配置中訪問工廠數據對象？

Question

我正在嘗試創建一個Angular.JS計算器，如果某個工廠的數據對象爲空，它將返回到根頁面。我的問題是，我不知道如何訪問Data.Terms對象，以查看它是否在/condition路徑下的$routeProvider配置中爲空。

在我下面的代碼中，表示if (!Data.Terms)的部分不起作用。我希望它返回存儲在工廠數據功能條款的價值：

// Creating the module 
var myApp = angular.module("app-calculator", ["calculatorControls", "ngRoute"]) 
    .config(function ($routeProvider) { 

     $routeProvider.when("/", { 
      controller: "termsController", 
      controllerAs: "vm", 
      templateUrl: "/content/templates/termsView.html" 
     }); 

     $routeProvider.when("/condition", { 
      controller: "conditionController", 
      controllerAs: "vm", 
      templateUrl: "/content/templates/conditionView.html", 
      resolve: { 
       mess: function ($location) { 

        // Check if the Data.Terms field has been completed, 
        // if not then return to the root path. 
        if (!Data.Terms) { 
         $location.path('/'); 
        } 
        // 

       } 
      } 
     }); 

// my Data 
myApp.factory('Data', function() { 
    var Terms = ''; 

    return { 
     Terms: Terms, 
    } 
}) 

Answer 1

你應該注入Data爲您解決部分依賴。

var myApp = angular.module("app-calculator", ["calculatorControls", "ngRoute"]) 
    .config(function ($routeProvider) { 

     $routeProvider.when("/", { 
      controller: "termsController", 
      controllerAs: "vm", 
      templateUrl: "/content/templates/termsView.html" 
     }); 

     $routeProvider.when("/condition", { 
      controller: "conditionController", 
      controllerAs: "vm", 
      templateUrl: "/content/templates/conditionView.html", 
      resolve: { 
       mess: function ($location, Data) { 

        // Check if the Data.Terms field has been completed, 
        // if not then return to the root path. 
        if (!Data.Terms) { 
         $location.path('/'); 
        } 
        // 

       } 
      } 
     });