扩展 AngularJS 控制器的推荐方法是什么? [英] What's the recommended way to extend AngularJS controllers?

问题描述

我有三个非常相似的控制器.我想要一个控制器，由这三个扩展并共享其功能.

解决方案

也许你不扩展控制器，但可以扩展控制器或使单个控制器混合多个控制器.

module.controller('CtrlImplAdvanced', ['$scope', '$controller', function ($scope, $controller) {//初始化超类并扩展它.angular.extend(this, $controller('CtrlImpl', {$scope: $scope}));... 用于创建 mixin 的附加扩展.}]);

当父控制器被创建时，其中包含的逻辑也会被执行.有关更多信息，请参阅 $controller() ，但只需要传递 $scope 值.所有其他值将正常注入.

@mwarren，Angular 依赖注入会自动神奇地解决您的问题.您只需要注入 $scope，尽管您可以根据需要覆盖其他注入的值.以下面的例子:

(function(angular) {var module = angular.module('stackoverflow.example',[]);module.controller('simpleController', function($scope, $document) {this.getOrigin = function() {返回 $document[0].location.origin;};});module.controller('complexController', function($scope, $controller) {angular.extend(this, $controller('simpleController', {$scope: $scope}));});})(角度);

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.15/angular.js"></script><div ng-app="stackoverflow.example"><div ng-controller="complexController as C"><span><b>来自控制器的来源:</b>{{C.getOrigin()}}</span>

虽然$document在'complexController'创建时没有传递给'simpleController'，但是$document是为我们注入的.

I have three controllers that are quite similar. I want to have a controller which these three extend and share its functions.

解决方案

Perhaps you don't extend a controller but it is possible to extend a controller or make a single controller a mixin of multiple controllers.

module.controller('CtrlImplAdvanced', ['$scope', '$controller', function ($scope, $controller) {
    // Initialize the super class and extend it.
    angular.extend(this, $controller('CtrlImpl', {$scope: $scope}));
    … Additional extensions to create a mixin.
}]);

When the parent controller is created the logic contained within it is also executed. See $controller() for for more information about but only the $scope value needs to be passed. All other values will be injected normally.

@mwarren, your concern is taken care of auto-magically by Angular dependency injection. All you need is to inject $scope, although you could override the other injected values if desired. Take the following example:

(function(angular) {

	var module = angular.module('stackoverflow.example',[]);

	module.controller('simpleController', function($scope, $document) {
		this.getOrigin = function() {
			return $document[0].location.origin;
		};
	});

	module.controller('complexController', function($scope, $controller) {
		angular.extend(this, $controller('simpleController', {$scope: $scope}));
	});

})(angular);

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.15/angular.js"></script>

<div ng-app="stackoverflow.example">
    <div ng-controller="complexController as C">
        <span><b>Origin from Controller:</b> {{C.getOrigin()}}</span>
    </div>
</div>

Although $document is not passed into 'simpleController' when it is created by 'complexController' $document is injected for us.

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