Angular完成了大部分经常使用的HTML5的表单控件的范例(text, number, url, email, date, radio, checkbox),也完成了许多指令做为考证(required, pattern, minlength, maxlength, min, max)。
在自定义的指令中,我们能够增加我们的考证要领到ngModelController的$validators对象上。为了获得这个controller对象,我们须要requirengModel指令。
在$validators对象上的每一个要领都吸收modelValue和viewValue两个值做为参数。在你绑定的考证要领返回一个值(true,false)以后,Angular会在内部挪用$setValidity要领。考证会在每一次输入框的值转变($setViewValue被挪用)或许模子的值转变。考证发生在$parsers和$formatters胜利运转以后,考证不经由过程的项会做为ngModelController.$error的属性存储起来。
别的,在这个controller对象上,另有一个$asyncValidators对象,假如你的考证是异步的,则须要加考证附加在这个对象上,比如说用户注册时输入手机号,我们须要在后端考证该手机号是不是已注册,这个考证要领必需return一个promise对象,然后在考证经由过程时挪用耽误对象的resolve,失利时挪用reject,还未完成的异步的考证存储在ngModelController.$pending中。
比方(注重个中的user对象,只要考证经由过程了,才会将值绑定到模子上):
<form name="register_form" ng-submit="save()">
<div class="form-group">
<label for="phoneNumber">
手机号(不能反复):
</label>
<input type="text" class="form-control" ng-model="user.phoneNumber" id="phoneNumber" name="phoneNumber" required phone>
</div>
<div class="form-group">
<label for="username">
用户名(必需大于五位):
</label>
<input type="text" class="form-control" ng-model="user.username" id="username" required username>
</div>
<button class="btn btn-block btn-primary" type="submit">提交</button>
</form>
<h3>用户对象</h3>
<pre>
{{ user | json }}
</pre>
'use strict';
angular.module('app', [])
.directive('phone', function ($q, $http) {
return {
require: 'ngModel',
link: function (scope, ele, attrs, ctrl) {
ctrl.$asyncValidators.phone = function (modelValue, viewValue) {
var d = $q.defer();
$http.get('phone.json')
.success(function (phoneList) {
if (phoneList.indexOf(parseInt(modelValue)) >= 0) {
d.reject();
} else {
d.resolve();
}
});
return d.promise;
}
}
}
})
.directive('username', function ($q, $http) {
return {
require: 'ngModel',
link: function (scope, ele, attrs, ctrl) {
ctrl.$validators.username = function (modelValue, viewValue) {
if (modelValue) {
return modelValue.length > 5 ? true : false;
};
return false;
}
}
}
})
[
13758262732,
15658898520,
13628389818,
18976176895,
13518077986
]
结果:
下面一个完全的用户注册的表单考证:
html:
<form name="register_form" novalidate>
<div class="form-group">
<label for="username">用户名:</label>
<!-- ng-pattern="/PATTERN/"确保输入项符合正则 -->
<input type="text" id="username" ng-model="user.username" class="form-control" name="username" required ng-pattern="/^[^#]*$/">
<span class="glyphicon glyphicon-ok right" ng-show="register_form.username.$valid"></span>
</div>
<div class="alert alert-danger" ng-show="register_form.username.$error.pattern">
<strong>请注重!</strong>
用户名不能带#号。
</div>
<div class="alert alert-danger" ng-show="register_form.username.$error.required && register_form.username.$touched">
<strong>请注重!</strong>
用户名不能为空。
</div>
<div class="form-group">
<label for="_password">暗码:</label>
<!-- ng-minlength="num"让暗码不能小于最小长度 -->
<input type="password" id="_password" ng-model="data._password" class="form-control" required ng-minlength="8" name="_password">
<span class="glyphicon glyphicon-ok right" ng-show="register_form._password.$valid"></span>
</div>
<div class="alert alert-danger" ng-show="register_form._password.$error.minlength && register_form._password.$touched">
<strong>请注重!</strong>
暗码长度不能少于八位。
</div>
<div class="alert alert-danger" ng-show="register_form._password.$error.required && register_form._password.$touched">
<strong>请注重!</strong>
暗码不能为空。
</div>
<div class="form-group">
<label for="password">确认暗码:</label>
<input type="password" id="password" ng-model="user.password" class="form-control" name="password" required pwd-repeat>
<span class="glyphicon glyphicon-ok right" ng-show="register_form.password.$valid"></span>
</div>
<div class="alert alert-danger" ng-show="register_form.password.$error.pwdRepeat && register_form.password.$touched">
<strong>请注重!</strong>
两次输入的暗码不雷同。
</div>
<div class="alert alert-danger" ng-show="register_form.password.$error.required && register_form.password.$touched">
<strong>请注重!</strong>
请再次输入暗码。
</div>
<div class="form-group">
<label for="phone">手机号:</label>
<div class="row">
<div class="col-sm-10">
<input type="num" id="phone" ng-model="user.phone" name="phone" class="form-control" required ng-minlength="11" ng-maxlength="11" phone>
</div>
<div class="col-sm-2">
<button class="btn btn-default" type="button" ng-disabled="register_form.phone.$invalid">发送考证码</button>
</div>
</div>
<span class="glyphicon glyphicon-ok right" ng-show="register_form.phone.$valid"></span>
</div>
<div class="alert alert-danger" ng-show="register_form.phone.$error.phone">
<strong>请注重!</strong>
该手机号已注册过,可直接登录。
</div>
<div class="alert alert-danger" ng-show="register_form.phone.$touched && !register_form.phone.$error.phone && (register_form.phone.$error.required || register_form.phone.$error.minlength || register_form.phone.$error.maxlength)">
<strong>请注重!</strong>
请输入准确的手机号。
</div>
<div class="form-group">
<label for="code">考证码:</label>
<input type="text" id="code" ng-model="user.code" class="form-control" name="code" required>
<span class="glyphicon glyphicon-ok right" ng-show="register_form.code.$valid"></span>
</div>
<!-- 在表单不合法时禁用提交按钮 -->
<button class="btn btn-block btn-primary" type="submit" ng-disabled="register_form.$invalid" ng-click="save()">提交</button>
</form>
'use strict';
angular.module('app', [])
.controller('myCtrl', function ($scope) {
$scope.data = {};
$scope.save = function () {
alert('保留胜利!')
}
})
// 推断手机号是不是反复
.directive('phone', function ($q, $http) {
return {
require: 'ngModel',
link: function (scope, ele, attrs, ctrl) {
ctrl.$asyncValidators.phone = function (modelValue, viewValue) {
var d = $q.defer();
$http.get('phone.json')
.success(function (phoneList) {
if (phoneList.indexOf(parseInt(modelValue)) >= 0) {
d.reject();
} else {
d.resolve();
}
});
return d.promise;
}
}
}
})
// 考证两次输入的暗码是不是雷同的自定义考证
.directive('pwdRepeat', function () {
return {
require: 'ngModel',
link: function (scope, ele, attrs, ctrl) {
ctrl.$validators.pwdRepeat = function (modelValue) {
// 当值为空时,经由过程考证,由于有required
if (ctrl.$isEmpty(modelValue)) {
return true;
}
return modelValue === scope.data._password ? true : false;
}
}
}
})
form-group {
position: relative;
}
.right {
position: absolute;
right: 10px;
top: 34px;
color: green';
}