为什么不会$ location.path触发$ routeChangeStart控制器？ [英] Why won't $location.path trigger a $routeChangeStart in the controller?

问题描述

我的测试有：

it("should clear the search field when the URL changes", function() {
  createController();
  $scope.init();
  $scope.searchTerm = 'some term';

  $location.path('/source');
  $rootScope.$apply();

  expect($scope.searchTerm).toBe('');
});

我的控制器是：

angularMoonApp.controller('SearchController', ['$scope', '$location', function ($scope, $location) {
  $scope.init = function() {
  $scope.$on('$routeChangeStart', function(next, current) {
    $scope.searchTerm = '';
  });

  }

  $scope.init();
}]);

看起来很简单！那么，为什么不就是触发，当我在测试中改变位置？

Seems simple enough! So why won't that trigger when I Change the location in the test?

推荐答案

您需要注入$路​​线，因为$ routeChangeStart是$路由触发的事件。

You need to inject $route, since $routeChangeStart is an event triggered by $route.

angularMoonApp.controller('SearchController', ['$scope', '$location', '$route', function ($scope, $location, $route) {

不知道你的使用情况，如果你只需要检测的URL更改，您可以侦听$ locationChangeStart代替。 $ locationChangeStart是从$位置发射，这样你就不会需要注入任何新的依赖关系。

Without knowing your use case, if you just need to detect that the url changed, you can listen for $locationChangeStart instead. $locationChangeStart is fired from $location, so you would not need to inject any new dependencies.

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