这是该问题的继续Get other columns from select ng-options
我的指令有问题。第一个问题是，在第一次加载表格时，我可以正确看到部门和类别，但项目显示“选择项目”而不是项目。第二个问题是，当我导航到列表中的另一行时，未显示初始值（例如，所有内容均显示“选择部门”，“选择类别”，“选择项目”而不是值。我确认在这种情况下我尚未检索该行的数据，因此，仅在获取数据后才需要运行指令的代码。
我该如何解决我的问题？
这是指令的完整代码：
(function () {
'use strict';
var app = angular.module('sysMgrApp');
app.directive('smDci', ['departmentService', 'categoryService', 'itemService', smDci]);
function smDci(departmentService, categoryService, itemService) {
var directive = {
restrict: 'E',
scope: {
selectedDepartmentId: '=?departmentid',
selectedCategoryId: '=?categoryid',
selectedItemId: '=itemid',
selectedDci: '=?dci'
},
controller: ['$scope', 'departmentService', 'categoryService', 'itemService',
function ($scope, departmentService, categoryService, itemService) {
$scope.selectedDepartmentId = $scope.selectedDepartmentId || 0;
$scope.selectedCategoryId = $scope.selectedCategoryId || 0;
$scope.selectedItemId = $scope.selectedItemId || 0;
$scope.selectedDci = $scope.selectedDci || '';
var init = function () {
$scope.metaData = {};
window.console && console.log('Selected departmentId = ' + $scope.selectedDepartmentId +
' Selected categoryId = ' + $scope.selectedCategoryId + ' Selected ItemId = ' + $scope.selectedItemId);
departmentService.getAllDepartments().then(function (data) {
$scope.metaData.departments = data.departments;
//window.console && console.log('Got all departments...')
});
if ($scope.selectedDepartmentId == 0 && $scope.selectedCategoryId == 0 && $scope.selectedItemId != 0) {
itemService.getItemById($scope.selectedItemId).then(function (data) {
var item = data.item;
if (item != null) {
$scope.selectedItem = item;
$scope.selectedDepartmentId = item.departmeId;
$scope.selectedCategoryId = item.categoryId;
window.console && console.log('Initial selections are about to fire...')
getInitialSelections();
}
});
}
else {
getInitialSelections();
}
};
var getInitialSelections = function()
{
if ($scope.selectedDepartmentId != 0) {
$scope.departmentChanged($scope.selectedDepartmentId);
}
if ($scope.selectedCategoryId != 0) {
$scope.categoryChanged($scope.selectedCategoryId);
}
}
$scope.departmentChanged = function (departmentId) {
if (!departmentId) {
$scope.selectedCategoryId = '';
$scope.selectedItemId = '';
$scop.selectedItem = {};
$scope.selectedDci = '';
}
else
{
categoryService.getCategoriesByDepartmentId(departmentId).then(function (data) {
$scope.metaData.categories = data.categories;
//window.console && console.dir($scope.selectedItem);
});
}
};
$scope.categoryChanged = function (categoryId) {
if (!categoryId) {
$scope.selectedItemId = '';
$scope.selectedItem = null;
$scope.selectedDci = '';
}
else
{
itemService.getItemsByCategoryId(categoryId).then(function (data) {
$scope.metaData.items = data.items;
});
}
};
$scope.itemChanged = function(item)
{
$scope.selectedItemId = item.itemId;
$scope.selectedDci = item.department + item.category + item.item;
}
init();
}],
templateUrl: 'app/templates/smDci'
};
return directive;
}
})();及其HTML：
<div class="row">
<label class="control-label col-md-2" title="@Labels.dci">@Labels.dci:</label>
<div class="col-md-3">
<select class="form-control" ng-model="selectedDepartmentId" name="department" id="department"
ng-options="d.departmeId as d.descrip for d in metaData.departments"
data-no:dirty-check
ng-change="departmentChanged(selectedDepartmentId)">
<option value="">@String.Format(Labels.selectX, Labels.department)</option>
</select>
</div>
<div class="col-md-3">
<select class="col-md-3 form-control" ng-model="selectedCategoryId" id="category" name="category"
ng-disabled="!selectedDepartmentId"
data-no:dirty-check
ng-change="categoryChanged(selectedCategoryId)"
ng-options="c.categoryId as c.descrip for c in metaData.categories | filter: {departmeId:selectedDepartmentId}">
<option value="">@String.Format(Labels.selectX, Labels.category)</option>
</select>
</div>
<div class="col-md-3">
<select class="col-md-3 form-control" ng-model="selectedItem" id="item" name="item"
ng-disabled="!selectedCategoryId"
ng-change="itemChanged(selectedItem)"
ng-options="c as c.descrip for c in metaData.items | filter: {departmeId:selectedDepartmentId, categoryId:selectedCategoryId}">
<option value="">@String.Format(Labels.selectX, Labels.item)</option>
</select>
<div class="field-validation-error">
<span ng-show="item.$error.required">@String.Format(Messages.isRequired, Labels.item)</span>
</div>
</div>
</div>
<div class="clearfix"></div>这就是我以以下形式使用它的方式：
<data-sm:dci itemid="currentCardAct.itemId" dci="currentCardAct.dci"></data-sm:dci>使用日志记录控制台，我可以看到需要后检索到的卡数据，例如在控制台中，我看到了
选定的部门编号= 0选定的类别编号= 0选定的项目编号= 0
CardActController.js：221检索到当前的卡片活动数据。
smDci.js：28选定的DepartmentId = 0选定的categoryId = 0选定的ItemId = 0
CardActController.js：221检索到当前的卡片活动数据。
我想我可以在指令的代码中添加手表，但这是唯一的选择吗？
最佳答案
我通过添加手表解决了这个问题。我现在正在尝试通过项目的初始选择来解决问题，显然这是一个关于初始选择的已知问题，如此处http://odetocode.com/blogs/scott/archive/2013/06/19/using-ngoptions-in-angularjs.aspx所述。