ng模型之一的角度无法访问

Question

我正在与angular一起工作，几天来一直遇到这个问题。 当我尝试提交表单时，第二个下拉列表的值为null（selectedDocument下拉列表）。 我几天前发布了代码，但没有人可以帮助我。 这就是为什么我要重新放置代码。

<div  ng-controller="myController">
<form name="myForm" >
    <div>
        <select ng-model="selectedCompany">
            <option value="">-- Select Company --</option>
            <option data-ng-repeat="currentSetting in currentSettings" value={{currentSetting.SCACCode}}>{{currentSetting.SCACCode}}</option>
        </select>
    </div>
    <div><input id="Text1" type="text"  ng-model="enteredCustomer"/></div>
    <div>
        <select ng-model="selectedDocument" ng-click="getTypes()">
            <option value="">-- Select Doc type --</option>
            <option data-ng-repeat="docSetting in docSettings" value="{{docSetting.Doc_Type}}">{{docSetting.Doc_Type}}</option>
        </select>
    </div>
    <input id ="btnAdd" type="button" value="Add new record" ng-click="setNewRecord()"/>
</form>

这是我的javascript

<script>
    var myApp = angular.module("myApp", []);

    myApp.service('companiesService', ['$http', '$q', function ($http, $q) {
        var currentSettings = null;

        this.getList = function () {
            var def = $q.defer()
            if (currentSettings) {
                def.resolve(currentSettings);
            } else {
                $http.post('GetCompanies')
                  .then(function (response) {
                      var response = $.parseJSON(response.data)
                      currentSettings = response;
                      def.resolve(currentSettings);
                  });
            }
            return def.promise;
        }
    }]);

    myApp.service('allCurrentSettingsService', ['$http', '$q', function ($http, $q) {
        var allSettings = null;
        this.getList = function () {
            var def = $q.defer()
            if (allSettings) {
                def.resolve(allSettings);
            } else {
                $http.post('GetAllCurrentSettings')
                  .then(function (response) {
                      var response = $.parseJSON(response.data)
                      allSettings = response;
                      def.resolve(allSettings);
                  });
            }
            return def.promise;
        }
    }]);

    myApp.service("deleteService", function ($http) {
        this.removeRow = function (recId, compName, custName, docName) {

            $http.post('DeleteRecord', { settingID: recId,companyName: compName,customerName: custName, documentName: docName } )
            .success(function (data, status, headers, config) {
               window.location.reload();
            })
            .error(function (data, status, header, config) {
            });
        }
    });

    myApp.service("setNewRecordService", function ($http) {
        this.setNewRecord = function (compName, custName, docName) {


            $http.post('SetCurrentRecord', { companyName: compName, customerName: custName, documentType: docName })
            .success(function (data, status, headers, config) {


                window.location.reload();
            })
            .error(function (data, status, header, config) {
            });
        }
    });

    myApp.service('getDocTypesService', ['$http', '$q', function ($http, $q) {
        var docSettings = null;
        this.getDocTypes = function (compName, custName) {
            var def = $q.defer()
            if (docSettings) {
                def.resolve(docSettings);
            } else {
                $http.post('GetDocTypes', { companyName: compName, customerName: custName })
                  .then(function (response) {
                      var response = $.parseJSON(response.data)
                      docSettings = response;
                      def.resolve(docSettings);
                  });
            }
            return def.promise;
        }
    }]);





    myApp.controller('myController', ['$scope', 'companiesService', 'allCurrentSettingsService','deleteService', 'setNewRecordService', 'getDocTypesService',
      function ($scope, companiesService, allCurrentSettingsService, deleteService, setNewRecordService, getDocTypesService) {

          $scope.currentSettings = '';
          companiesService.getList().then(function (value) {
              $scope.currentSettings = value;

          }),
          $scope.allSettings = '';
          allCurrentSettingsService.getList().then(function (value) {
              $scope.allSettings = value;

          }),
          $scope.deleteRecordFromDB = function (recId, compName, custName, docName) {
              deleteService.removeRow(recId, compName, custName, docName)
          },

          $scope.companyName = '';
          $scope.setNewRecord = function () {
              setNewRecordService.setNewRecord($scope.selectedCompany, $scope.enteredCustomer, $scope.selectedDocument)

          },

          $scope.getTypes = function () {
              getDocTypesService.getDocTypes($scope.selectedCompany, $scope.enteredCustomer).then(function (value) {
                  $scope.docSettings = value
              });
          };
            }
    ]);

Answer 1

下拉列表是否获取数据

如果不

我认为在getTypes函数中，你可以试试这个吗

$scope.getTypes = function () {
    getDocTypesService.getDocTypes($scope.selectedCompany, $scope.enteredCustomer).then(function (value) {
        $scope.docSettings = value.data;
    });
}

Answer 2

例如，在您的控制器中，您可以：

companiesService.getList().then(function (value) {
  $scope.currentSettings = value;
}),
$scope.allSettings = '';

什么是逗号？

以结束通话； 以及所有其他人。

您的第一个选择具有来自该第一个服务呼叫的数据。 然后由于它后面所有的逗号功能而出错。 正确终止它们，然后当它变为设置$ scope.docSettings时应该正确。

myApp.controller('myController', ['$scope', 'companiesService', 'allCurrentSettingsService','deleteService', 'setNewRecordService', 'getDocTypesService',
  function ($scope, companiesService, allCurrentSettingsService, deleteService, setNewRecordService, getDocTypesService) {

    $scope.currentSettings = '';
    companiesService.getList().then(function (value) {
      $scope.currentSettings = value;
    });

    $scope.allSettings = '';
    allCurrentSettingsService.getList().then(function (value) {
      $scope.allSettings = value;
    });

    $scope.deleteRecordFromDB = function (recId, compName, custName, docName) {
      deleteService.removeRow(recId, compName, custName, docName);
    };

    $scope.companyName = '';
    $scope.setNewRecord = function () {
      setNewRecordService.setNewRecord($scope.selectedCompany, $scope.enteredCustomer, $scope.selectedDocument)
    };

    getDocTypesService.getDocTypes($scope.selectedCompany, $scope.enteredCustomer).then(function (value) {
      $scope.docSettings = value
    });
  }
]);

像这样，我的ES5有点生锈，但是看看是否可行。 编辑：删除不必要的docType。

Answer 3

您可能与angular（以及有关此问题的Javascript）处理范围的方式有关。

简而言之，问题在于子作用域断开了与父作用域（您的控制器变量）的连接。 一个简单的解决方法是将表单变量绑定到对象，并在视图中使用点符号引用它们。

您可以在许多SO答案中对此进行阅读，例如，在这里： 为什么AngularJS文档在model指令中不使用点？

编辑

我做了一个最小的工作插件 ，应该指出正确的方向，这是编辑后的代码。

myApp.controller('myController', ['$scope', 'companiesService', 'allCurrentSettingsService','deleteService', 'setNewRecordService', 'getDocTypesService',
  function ($scope, companiesService, allCurrentSettingsService, deleteService, setNewRecordService, getDocTypesService) {

      $scope.selections = {company: null, document: null};

      $scope.currentSettings = '';
      companiesService.getList().then(function (value) {
          $scope.currentSettings = value;

      }),
      $scope.allSettings = '';
      allCurrentSettingsService.getList().then(function (value) {
          $scope.allSettings = value;

      }),
      $scope.deleteRecordFromDB = function (recId, compName, custName, docName) {
          deleteService.removeRow(recId, compName, custName, docName)
      },

      $scope.companyName = '';
      $scope.setNewRecord = function () {
          setNewRecordService.setNewRecord($scope.selected.company, $scope.enteredCustomer, $scope.selected.document)

      },

      $scope.getTypes = function () {
          getDocTypesService.getDocTypes($scope.selected.company, $scope.enteredCustomer).then(function (value) {
              $scope.docSettings = value
          });
      };
        }
]);

和html：

<div  ng-controller="myController">
    <form name="myForm" >
    <div>
        <select ng-model="selected.company">
            <option value="">-- Select Company --</option>
            <option data-ng-repeat="currentSetting in currentSettings" value={{currentSetting.SCACCode}}>{{currentSetting.SCACCode}}</option>
        </select>
</div>
<div><input id="Text1" type="text"  ng-model="enteredCustomer"/></div>
<div>
    <select ng-model="selected.document" ng-click="getTypes()">
        <option value="">-- Select Doc type --</option>
        <option data-ng-repeat="docSetting in docSettings" value="{{docSetting.Doc_Type}}">{{docSetting.Doc_Type}}</option>
    </select>
</div>
<input id ="btnAdd" type="button" value="Add new record" ng-click="setNewRecord()"/>