TypeError:undefined不是Angular Resource中的函数

时间:2014-05-12 12:32:19

标签: javascript angularjs angularjs-directive angularjs-scope angularjs-resource

尝试在AngularJS资源上轮询自定义方法copies时,我在angular.js:10033处收到以下错误:(方法copy工作得很好。)

TypeError: undefined is not a function
at https://code.angularjs.org/1.3.0-beta.8/angular-resource.min.js:9:347
at Array.forEach (native)
at q (https://code.angularjs.org/1.3.0-beta.8/angular.min.js:7:280)
at q.then.p.$resolved (https://code.angularjs.org/1.3.0-beta.8/angular-resource.min.js:9:329)
at J (https://code.angularjs.org/1.3.0-beta.8/angular.min.js:101:5)
at J (https://code.angularjs.org/1.3.0-beta.8/angular.min.js:101:5)
at https://code.angularjs.org/1.3.0-beta.8/angular.min.js:102:173
at g.$eval (https://code.angularjs.org/1.3.0-beta.8/angular.min.js:113:138)
at g.$digest (https://code.angularjs.org/1.3.0-beta.8/angular.min.js:110:215)
at g.$apply (https://code.angularjs.org/1.3.0-beta.8/angular.min.js:113:468)

Angular.js 10016 - 10035:

function consoleLog(type) {
  var console = $window.console || {},
      logFn = console[type] || console.log || noop,
      hasApply = false;

  // Note: reading logFn.apply throws an error in IE11 in IE8 document mode.
  // The reason behind this is that console.log has type "object" in IE8...
  try {
    hasApply = !!logFn.apply;
  } catch (e) {}

  if (hasApply) {
    return function() {
      var args = [];
      forEach(arguments, function(arg) {
        args.push(formatError(arg));
      });
      return logFn.apply(console, args); // This is line 10033 where the error gets thrown.
    };
  }

简化资源:

angular.module('vgm.content-pages')
.factory('ContentPage', function($resource, $http) {

  return $resource('/api/content-page/:id', { id:'@page.id' }, {
    copy: {
      method: 'POST',
      url: '/api/content-page/copy/:id'
    },
    copies: {
      method: 'GET',
      isArray: true,
      url: '/api/content-page/copies/:id'
    }
  });

});

我收到错误的简化指令:

angular.module('vgm.genericForms')
.directive('vgmFormCopyPicker', function() {

  return {
    restrict: 'E',
    replace: true,
    templateUrl: '/static/common/generic-forms/widgets/view-copy-picker.html',
    scope: {
      resource: '=',
    },
    controller: function($scope, $element) {

      $scope.pages = [];

      $scope.loadCopies = function() {

        $scope.resource.$copies()
          .then(function(response) {
            $scope.pages = response.data;
          });

      };

    }
  };

});

只要我运行loadCopies方法,执行第$scope.resource.$copies()行就会引发错误。

在Chrome Inspector中,我看到对我的API的调用实际上已经完成。但解决这个承诺似乎会引起一些错误......

如何解决此错误?

编辑:

$scope.resource = ContentPage.get({id: $stateParams.id}).$promise
$scope.resource.$save() // Works
$scope.resource.$update() // Works
$scope.resource.$copy() // Works
$scope.resource.$copies() // Does not work!

Angular Resource正试图用一系列项目覆盖我的初始资源。但是,Resource的实例当然没有方法push

2 个答案:

答案 0 :(得分:8)

我找到了答案:

资源应该代表匹配的数据对象的剩余生命周期。如果要获取新数据,则应使用新对象执行此操作。

$scope.copies = ContentPage.copies()

答案 1 :(得分:6)

Guido的答案是正确的,但我第一次没有得到它。

如果您向Angular $resource添加自定义方法并使用isArray: true并期望从WebService获取某些内容,则可能需要将响应存储在数组中。

因此,您不应该像这样使用实例方法:

var ap = new Ansprechpartner();
$scope.nameDuplicates = ap.$searchByName(...);

但直接使用资源:

$scope.nameDuplicates = Ansprechpartner.searchByName(...)

使用以下Angular资源:

mod.factory('Ansprechpartner', ['$resource',
    function ($resource) {
        return $resource('/api/Ansprechpartner/:id', 
            { id: '@ID' },
            {
                "update": { method: "PUT" },
                "searchByName": { method: "GET", url: "/api/Ansprechpartner/searchByName/:name", isArray: true }
            }
        );
    }
]);