这是我想要完成的jsfiddle example。
我正在尝试构建美国电话号码输入,其中视图显示为(333)555-1212,但模型绑定到数字整数3335551212。
我的目的是向NgModelController
添加自定义验证器,这就是我require: ng-model
的原因;有没有隔离范围和NgModelController
的更简单的解决方案,但我需要两者。
你会在控制台中看到一个立即错误:Error: Multiple directives [ngModel, ngModel] asking for 'ngModel' controller on: <input ng-model="user.mobile numeric" name="telephone" type="tel">
- 我以为我在这里使用了隔离范围......
答案 0 :(得分:4)
感谢您寻找@ mimir137,但我似乎已经解决了它:
http://jsfiddle.net/hr121r18/8/
该指令使用的是replace: true
,最终结构为:
<form ng-controller="FooCtrl" class="ng-scope">
<p>Enter US phone number</p>
<input ng-model="user.mobile numeric" name="telephone" type="tel">
</form>
模板和标记都需要ng-model
,这导致了问题描述中的症状错误。删除后,它会导致此标记(请注意包装元素phone-number
):
<form ng-controller="FooCtrl" class="ng-valid ng-scope ng-dirty ng-valid-parse" abineguid="BC0D9644F7434BBF80094FF6ABDF4418">
<p>Enter US phone number</p>
<phone-number ng-model="user.mobile" class="ng-untouched ng-valid ng-isolate-scope ng-dirty ng-valid-parse">
<input ng-model="numeric" name="telephone" type="tel" class="ng-valid ng-dirty ng-touched">
</phone-number>
</form>
但删除了$render
所需的更改;传递给链接函数的elem
现在为phone-number
,因此您需要挖掘以获取其中的input
并在其上设置值:
ngModel.$render = function () {
elem.find('input').val($filter('phonenumber')(ngModel.$viewValue));
};
还有一些其他问题。还需要从观察者那里调用$render()
。
决赛:
var app = angular.module('myApp', []);
// i want to bind user.mobile to the numeric version of the number, e.g. 3335551212, but
// display it in a formatted version of a us phone number (333) 555-1212
// i am trying to make the directive's scope.numeric to have two-way binding with the controller's
// $scope.user.mobile (using isolate scope, etc.).
app.controller('FooCtrl', function ($scope) {
$scope.user = {
mobile: 3335551212
};
});
app.directive('phoneNumber', ['$filter', function ($filter) {
return {
restrict: 'E',
template: '<input ng-model="numeric" name="telephone" type="tel">',
require: 'ngModel',
scope: {
numeric: '=ngModel'
},
link: function (scope, elem, attrs, ngModel) {
// update $viewValue on model change
scope.$watch('numeric', function () {
ngModel.$setViewValue(scope.numeric);
ngModel.$render();
});
// $modelValue convert to $viewValue as (999) 999-9999
ngModel.$formatters.push(function (modelValue) {
return $filter('phonenumber')(String(modelValue).replace(/[^0-9]+/, ''));
});
// $viewValue back to model
ngModel.$parsers.push(function (viewValue) {
var n = viewValue;
if (angular.isString(n)) {
n = parseInt(n.replace(/[^0-9]+/g, ''));
}
return n;
});
// render $viewValue through filter
ngModel.$render = function () {
elem.find('input').val($filter('phonenumber')(ngModel.$viewValue));
};
}
};
}]);
app.filter('phonenumber', function () {
return function (number) {
if (!number) {
return '';
}
number = String(number);
var formattedNumber = number;
var c = (number[0] === '1') ? '1 ' : '';
number = number[0] === '1' ? number.slice(1) : number;
var area = number.substring(0, 3),
exchange = number.substring(3, 6),
subscriber = number.substring(6, 10);
if (exchange) {
formattedNumber = (c + '(' + area + ') ' + exchange);
}
if (subscriber) {
formattedNumber += ('-' + subscriber);
}
return formattedNumber;
}
});
HTML
<form ng-controller="FooCtrl">
<p>Enter US phone number</p>
<phone-number ng-model='user.mobile'></phone-number>
</form>
答案 1 :(得分:0)
我创建了this fiddle,可以摆脱控制台中出现的大多数错误。希望这至少能够让你走上正轨。
我更改了模板,以便您可以看到过滤器实际正在运行。
它现在在文本框下面有纯文本的典型{{ngModel | FilterName}}
。
唯一真正的问题是在文本框中显示它。我相信你没问题。我会在早上检查,以防你仍然对此有疑问。
编辑:好吧,看来你已经解决了。太棒了!