javascript - 如何将使用 $scope 的函数包含/注入(inject)到 angularjs 的 Controller 中？

Question

我正在尝试将工厂中保存的函数库包含到 Controller 中。类似于这样的问题: Creating common controller functions

我的主 Controller 是这样的:

recipeApp.controller('recipeController', function ($scope, groceryInterface, ...){

$scope.groceryList = [];
// ...etc...    

/* trying to retrieve the functions here */
$scope.groceryFunc = groceryInterface; // would call ng-click="groceryFunc.addToList()" in main view
    /* Also tried this:
    $scope.addToList = groceryInterface.addToList();
    $scope.clearList = groceryInterface.clearList();
    $scope.add = groceryInterface.add();
    $scope.addUp = groceryInterface.addUp(); */
}

然后，在另一个 .js 文件中，我创建了工厂 groceryInterface。我已将此工厂注入(inject)到上面的 Controller 中。

工厂

recipeApp.factory('groceryInterface', function(){

        var factory = {};

    factory.addToList = function(recipe){
        $scope.groceryList.push(recipe);
                    ... etc....
    }

    factory.clearList = function() {
            var last = $scope.prevIngredients.pop();
            .... etc...
    }

    factory.add = function() {
    $scope.ingredientsList[0].amount = $scope.ingredientsList[0].amount + 5;
    }

    factory.addUp = function(){
        etc...
    }

    return factory;
});

但在我的控制台中，我不断收到 ReferenceError: $scope is not defined
在 Object.factory.addToList 等 显然，我猜这与我在工厂内的函数中使用 $scope 这一事实有关。我该如何解决这个问题？我注意到在我看过的许多其他示例中，没有人在他们的外部工厂函数中使用过 $scope。我已经尝试将 $scope 作为参数注入(inject)到我的工厂中，但显然没有用。 (例如 recipeApp.factory('groceryInterface', function(){ )

非常感谢任何帮助!

Answer 1

您的工厂无法访问您的 $scope，因为它不在同一范围内。

试试这个:

recipeApp.controller('recipeController', function ($scope, groceryInterface) {

    $scope.addToList = groceryInterface.addToList;
    $scope.clearList = groceryInterface.clearList;
    $scope.add       = groceryInterface.add;
    $scope.addUp     = groceryInterface.addUp;
}

recipeApp.factory('groceryInterface', function () {

    var factory = {};

    factory.addToList = function (recipe) {
        this.groceryList.push(recipe);
    }

    factory.clearList = function() {
        var last = this.prevIngredients.pop();
    }
});

---

或者，您可以尝试使用更面向对象的方法:

recipeApp.controller('recipeController', function ($scope, groceryInterface) {

    $scope.groceryFunc = new groceryInterface($scope);
}

recipeApp.factory('groceryInterface', function () {

    function Factory ($scope) {

        this.$scope = $scope;
    }

    Factory.prototype.addToList = function (recipe) {
        this.$scope.groceryList.push(recipe);
    }

    Factory.prototype.clearList = function() {
        var last = this.$scope.prevIngredients.pop();
    }

    return Factory;
});