我为表单字段创建了一个动态templateUrl,我正在尝试在ng-repeat中附加ng-model。父指令和表单字段指令都可以生成并生成,但是当我使用ng-model它似乎没有工作时,预输出永远不会改变?在这个用例中应用ng-model有诀窍吗?如果我只是使用硬编码表单输入,它的工作原理。我一直在关注AngularJS文档中的example。
表单字段周围的标记:
<form role="form" ng-controller="FormController as formCtrl" novalidate>
<div ng-repeat="field in panel.form_fields">
<form-field field="field"></form-field>
</div>
<fieldset class="form-group clearfix">
<button type="submit" class="btn btn-primary pull-right">Save Progress</button>
</fieldset>
<pre>form = {{models | json}}</pre>
<pre>master = {{master | json}}</pre>
</form>
表单字段指令:
angular.module('formField.directives', [])
.directive('formField', [ '$http', '$compile', function( $http, $compile ) {
var getTemplateUrl = function( field ) {
var type = field.field_type;
var templateUrl = '';
switch( type ) {
case 'textfield':
templateUrl = 'components/form-field/fields/textfield.html';
break;
case 'email':
templateUrl = 'components/form-field/fields/email.html';
break;
case 'currency':
templateUrl = 'components/form-field/fields/currency.html';
break;
case 'date':
templateUrl = 'components/form-field/fields/date.html';
break;
case 'dropdown':
templateUrl = 'components/form-field/fields/dropdown.html';
break;
case 'textarea':
templateUrl = 'components/form-field/fields/textarea.html';
break;
case 'hidden':
templateUrl = 'components/form-field/fields/hidden.html';
break;
case 'password':
templateUrl = 'components/form-field/fields/password.html';
break;
case 'checkbox':
templateUrl = 'components/form-field/fields/checkbox.html';
break;
case 'radio':
templateUrl = 'components/form-field/fields/radio.html';
break;
}
return templateUrl;
}
var linker = function( scope, element ) {
var templateUrl = getTemplateUrl( scope.field );
$http.get( templateUrl ).success(function( data ) {
element.html(data);
$compile(element.contents())(scope);
});
}
return {
restrict: 'E',
replace: true,
scope: {
field: '='
},
link: linker
}
}]);
使用的表单字段模板:
<fieldset class="form-group">
<label for="{{field.field_name}}">{{field.field_label}}</label>
<input type="text"
class="form-control"
id="{{field.field_id}}"
name="{{field.field_name}}"
value="{{field.field_value}}"
placeholder="{{field.field_prompt}}"
ng-required="field.field_required"
ng-disabled="field.field_disabled"
ng-model="models[field.field_name]"> // model.test also doesn't work, and need to be able to reference the model dynamically
</fieldset>
AngularJS docs中的示例使用的控制器:
.controller('FormController', ['$scope', function( $scope ) {
$scope.master = {};
$scope.models = {};
$scope.update = function( models ) {
console.info('Update');
$scope.master = angular.copy( models );
};
$scope.submit = function() {
console.info('Form Submitted');
};
$scope.cancel = function() {
console.info('Form Cancelled');
};
$scope.clear = function() {
console.info('Form Clear');
$scope.models = {};
}
$scope.reset = function() {
console.info('Form Reset');
$scope.models = angular.copy( $scope.master );
};
$scope.reset();
}]);
答案 0 :(得分:3)
您的指令适用于隔离范围(.$new(true)
),这意味着您在指令中所做的更改将无法直接在外部作用域中使用(除非您使用双向绑定等)。因此,ng-model="models[field.field_name]"
指令中的models
不是父控制器中作用域上的models
对象。所以你可以通过使用双向绑定传递模型来修复它。
<form-field field="field" model="models[field.field_name]"></form-field>
在您的指令模板中: -
<input type="text"
class="form-control"
id="{{field.field_id}}"
name="{{field.field_name}}"
value="{{field.field_value}}"
placeholder="{{field.field_prompt}}"
ng-required="field.field_required"
ng-disabled="field.field_disabled"
ng-model="model"> <!-- Here just set the model on the scope 2-way B -->
并在您的指令中隔离范围声明: -
scope:{field:'=', model:'='},
//or set a reference to the object on scope holding models in the field property itself.
<强> Plnkr 强>
请注意,在指定value="{{field.field_value}}"
和ng-model
时,在指令模板中,根本不会设置默认值。您需要在ngModel本身中默认它。