如何检查是否有angularjs控制器已经被定义 [英] How to check if an angularjs controller has been defined

问题描述

我有这样定义的应用程序：

I've got an app defined this way:

angular.module("myApp", [...])
  .config(function ($stateProvider, $controllerProvider) {
    if (isControllerDefined(controllerName)) {
      do_stuff();
    }
  })

该控制器的定义是这样的：

The controllers are defined this way:

angular.module("myApp")
  .controller("myController", function ($scope) { ... });

我如何定义 isControllerDefined（）（在上面的配置）来检查，如果我有控制器的名称是否存在一个给定的控制？我觉得我应该可以做类似的其中之一：

How can I define isControllerDefined() (in the config above) to check whether a given controller exists if I have the name of the controller? I feel like I should be able to do something like one of these:

var ctrl = angular.module("myApp").getController("myController");
var ctrl = $controllerProvider.get("myController");

或类似的东西......但我不能找到这个任何功能。帮助？

or something like that... but I can't find any functionality for this. Help?

推荐答案

这可以检查是否控制器存在服务的一个例子。请注意，它看起来对全局函数以及在 $控制器控制器人员。

An example of a service that can check if a controller exists. Note that it looks for a global function with specified name as well as a controller in the $controller provider.

angular.service('ControllerChecker', ['$controller', function($controller) {
  return {
    exists: function(controllerName) {
      if(typeof window[controllerName] == 'function') {
        return true;
      }
      try {
        $controller(controllerName);
        return true;
      } catch (error) {
        return !(error instanceof TypeError);
      }
    }
  };
}]);

请参阅为使用的小提琴。

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