1

我在下面有以下 Angular 代码。我注意到当我调用 ng-click="update($index, list.name)" 来更新名称字段时，它会在我的 JSON 列表中为 ID 创建一个新的键/值对，这是不必要的。此外，我的所有其他字段，如类型、CDN 等都被清除了。我只想更新名称字段。谢谢！

                    var tools = angular.module("tools", ['ngResource'])
                 tools.config(function($routeProvider) {
                    $routeProvider.when('/home', {
                        templateUrl: 'home.html',
                        controller: 'HomeController'
                    });
                    $routeProvider.when('/about', {
                        templateUrl: 'about.html',
                        controller: 'AboutController'
                    });
                    $routeProvider.otherwise({
                        redirectTo: '/home'
                    })
                });
                tools.controller("HomeController", function($scope, fetchData, containItems, fetchData) {
                    $scope.arrayofModel = ["nothing"];
                    $scope.clearSearch = function() {
                        $scope.search = "";
                        $scope.name2 = "";
                    }
                    $scope.name2 = "";
                    $scope.search = "";
                    //READ
                    $scope.record = fetchData.query();
                    //CREATE
                    $scope.addNew = function(name, $location) {
                        //Create the forum object to send to the back-end
                        var forum = new fetchData($scope.addNew1);
                        //Save the forum object
                        forum.$save(function(response) {
                            $scope.record.unshift(response);
                            //$scope.record = fetchData.query();
                        }, function(response) {
                            //Post response objects to the view
                            $scope.errors = response.data.errors;
                        });
                    }
                    //DELETE
                    $scope.destroy = function(index) {
                        //alert($scope.record[index]._id.$oid);
                        //return false;
                        //Tell the server to remove the object
                        fetchData.delete({
                            id: $scope.record[index]._id.$oid
                        }, function() {
                            //If successful, remove it from our collection
                            $scope.record.splice(index, 1);
                        });
                    }
                    //UPDATE
                    $scope.update = function(index, newName) {
                        fetchData.update({
                            id: $scope.record[index]._id.$oid,
                            name: newName
                        }, function() {
                            console.log('posted');
                            $scope.record = fetchData.query();
                        });
                    }
                });
                tools.controller("AboutController", function($scope) {});
                tools.factory('fetchData', function($resource) {
                    return $resource('https://api.mongolab.com/api/1/databases/frameworks/collections/list/:id?s={name: 1}&apiKey=_QnS_M-Iz9-RCKJNmVYEMvvaYL', {}, {
                        'get': {
                            method: 'GET'
                        },
                        'save': {
                            method: 'POST'
                        },
                        //CREATE
                        'query': {
                            method: 'GET',
                            isArray: true
                        },
                        //READ
                        'remove': {
                            method: 'DELETE'
                        },
                        'update': {
                            method: 'PUT',
                            params: {
                                id: "@id"
                            }
                        },
                        //UPDATE
                        'delete': {
                            method: 'DELETE',
                            params: {
                                id: "@id"
                            }
                        }
                    }) //DELETE
                });

这也是我的观点：

 <tbody>

   <tr ng-repeat="list in record | filter: {type:name2, name: search}">
     <td>{{list._id.$oid}}</td>
     <td><input ng-model="list.name"></td>
     <td>{{list.type}}</td>
     <td><img src="{{list.logo}}" /></td>
     <td><a target="_blank" href="{{list.url}}">URL</a></td>
     <td><a ng-show="list.CDN != ''" href="{{list.CDN}}">CDN</a></td>
     <td><a target="_blank" class="btn btn-primary btn-large" href="{{list.download}}" ng-click="putConsole(list.name)">Download</a></td>
     <td><a target="#" class="btn btn-primary btn-large" ng-click="destroy($index)">Delete!</a></td>
     <td><a target="#" class="btn btn-primary btn-large" ng-click="update($index, list.name)">Update!</a></td>
  </tr>
  <!--<tr><span ng-show="totalCount.length == '0'">No results found. Please reset your search and try again!</span></tr>-->

4

1 回答 1

2

当您使用 MongoDB 执行更新时，它将用您指定的文档替换现有文档，除非您使用更新运算符：

http://docs.mongodb.org/v2.2/applications/update/

在您的情况下，如果您想更改单个字段的值而不理会其他字段，则必须使用“$set”运算符：

http://docs.mongodb.org/v2.2/applications/update/#update-a-field-in-a-document

例如：

{ "$set" : { "name" : newName } }

这应该出现在 PUT 请求的正文中。您要更改的文档的 _id 应在 URL 中指定。有关详细信息，请参阅官方 API 文档中的“查看、更新或删除文档”部分：

https://support.mongolab.com/entries/20433053-rest-api-for-mongodb

于 2013-05-18T20:19:46.377 回答