Question

我正在使用angular 1.5.7，如果需要时间，我想取消对资源的删除。我正在使用MEAN堆栈，有时我看到我的资源上的删除被视为待处理（是mongo哪个很慢？）。下面是工厂和控制器的片段，我称之为删除： *工厂：

      .factory('addressesFactory', ['$resource', 'baseURL', function ($resource, baseURL) {
    return $resource(baseURL + 'addresses/:id', {id: '@_id'}, {
      'update': {
        method: 'PUT'
      },
      'delete': {
        method: 'DELETE'
      }
    });
  }])

来自控制器的片段：

$scope.delete = function (address, addressesList) {

$scope.deleteDisabled=true;

console.log('[ModeratorsCtrl] Deleting:' + address.name);
console.log('[ModeratorsCtrl] ' + addressesList.length);
addressesFactory.delete({id: address._id}).$promise.then(
  function (response) {
    $scope.deleteDisabled=false;
    console.log('[ModeratorsCtrl] Address deleted successfully');
  },
  function (response) {
    $scope.deleteDisabled=false;
    var message = '[ModeratorsCtrl] Error: ' + response.status + ' ' + response.statusText;
    console.log(message);
  }
);

};

我看过这篇文章How to cancel $resource requests，并阅读了有关取消请求的信息：https://docs.angularjs.org/api/ngResource/service/ $ resource＃！与$ cancelRequest（），但我有点困惑。任何人都可以给我一些关于我如何在实施中取消承诺的最佳实践吗？的问候，

Answer 1

假设您的资源是Users，要取消请求，您应该为您的行为命名，例如

var request = Users.query();

此时```请求是一个承诺。你可以简单地做一个，

request.$cancelRequest();

取消。

Answer 2

感谢您的帮助最后我在工厂做了以下事情：

  .factory('addressesFactory', ['$resource', 'baseURL', function ($resource, baseURL) {
    return $resource(baseURL + 'addresses/:id', {id: '@_id'}, {
      'update': {
        method: 'PUT'
      },
      'delete': {
        method: 'DELETE',
        cancellable: true
      }
    });
  }])

然后在我的控制器中：

 $scope.delete = function (address, addressesList) {
    $scope.deleteDisabled = true;//prevent multiple click

    var deleteRequest = addressesFactory.delete({id: address._id});
    deleteRequest.$promise.then(
      function (response) {
        $scope.deleteDisabled = false;
        console.log('[ModeratorsCtrl] Address deleted successfully');
      },
      function (response) {
        $scope.deleteDisabled = false;
        var message = '[ModeratorsCtrl] Error: ' + response.status + ' ' + response.statusText;
        console.log(message);
      }
    );

    $timeout(function () {//2 seconds then cancel the promise
      if ($scope.deleteDisabled === true) {
        console.log('[ModeratorsCtrl] Cancel ...');
        deleteRequest.$cancelRequest();
        $scope.deleteDisabled = false;
      }
    }, 2000);
  };

希望这符合最佳做法，随时提供反馈。

如何取消1.5中angularjs中$ resource的承诺

2 个答案: