我正在使用 angular，我已经遇到这个问题几天了。当我尝试提交表单时，我的第二个下拉列表的值为空(selectedDocument 下拉列表)。几天前我发布了我的代码，但没有人能帮助我。这就是为什么我再次重新放置代码。
<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) {
$scope.docSettings = value
});
};
}
]);
最佳答案
您可能与 angular(以及与此相关的 Javascript)处理范围的方式有关。
简而言之，问题在于子作用域正在断开与父作用域(您的 Controller 变量)的连接。一个简单的解决方法是将您的表单变量绑定(bind)到一个对象，并在 View 中使用点符号来引用它们。
您可以在许多 SO 答案中阅读此内容，例如: Why don't the AngularJS docs use a dot in the model directive?
编辑
我做了一个minimal working plunkr这应该会为您指明正确的方向，这是经过编辑的代码。
myApp.controller('myController', ['$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()"/>
关于javascript - 无法访问其中一个 ng 模型的 Angular，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37920202/