如何使用ng-messages显示Checkbox集和Radio set的错误消息？

Question

我一直在尝试验证Checkbox set和Radio set并使用ng-messages指令显示错误消息但是它没有按预期工作.ng-messages根本不显示错误消息.我正在使用html文件填充错误消息.在解决错误之前,我的表单中将禁用提交按钮.

如何在以下情况下显示Checkbox集和Radio set的错误消息:

1. 收音机中没有选择一个选项？

2. 在Checkbox集中未选择至少一个选项？

3. 检查Checkbox集的检查以便我们检查至少2个或更多,检查等等？

这是我的表格:

<form name="userForm" ng-submit="submitForm()" novalidate>
    <div class="form-group" ng-class="{ 'has-error' : userForm.subscribe.$invalid && !userForm.subscribe.$touched }">
        <label class="checkbox-inline">
            <input type="checkbox" id="subscribe1" value="option1" name="subscribe[]" ng-model="user.subscribe" required> 1
        </label>
        <label class="checkbox-inline">
            <input type="checkbox" id="subscribe2" value="option2" name="subscribe[]" ng-model="user.subscribe" required> 2
        </label>
        <label class="checkbox-inline">
            <input type="checkbox" id="subscribe3" value="option3" name="subscribe[]" ng-model="user.subscribe" required> 3
        </label>

        <div class="help-block" ng-messages="userForm.subscribe.$error" ng-show="userForm.subscribe.$invalid">
            <div ng-messages-include="home/messages.html"></div>
        </div>
    </div>

    <div class="form-group" ng-class="{ 'has-error' : userForm.gender.$invalid && !userForm.gender.$touched }">
        <div class="radio">
            <label>
                <input type="radio" name="gender" value="male" ng-model="user.gender" />
                male
            </label>
        </div>
        <div class="radio">
            <label>
                <input type="radio" name="gender" value="female" ng-model="user.gender" />
                female
            </label>
        </div>

        <div class="help-block" ng-messages="userForm.gender.$error" ng-show="userForm.gender.$invalid">
            <div ng-messages-include="home/messages.html"></div>
        </div>
    </div>
    <button type="submit" class="btn btn-primary btn-success " ng-disabled="userForm.$invalid">Submit</button>
</form>

messages.html

<span ng-message="required">This field is required</span>
<span ng-message="minlength">This field is too short</span>
<span ng-message="maxlength">This field is too long</span>
<span ng-message="required">This field is required</span>
<span ng-message="email">This needs to be a valid email</span>

controller.js

angular.module('myApp', ['ngRoute', 'ngAnimate', 'ngMessages']);

angular
    .module('myApp')
    .controller('HomeCtrl', HomeCtrl);

HomeCtrl.$inject = ['$scope'];

function HomeCtrl($scope) {
    $scope.userForm = {};
}

付款复选框设置:

<div class="form-group" ng-class="{ 'has-error' : userForm.payment.$invalid && userForm.payment.$touched }">
    <label class="checkbox-inline">
        <input type="checkbox" id="payment1" value="Visa" name="payment" ng-blur="doTouched()" ng-model="user.payment[1]" ng-required="!someSelected(user.payment)"> Visa
    </label>
    <label class="checkbox-inline">
        <input type="checkbox" id="payment2" value="Mastercard" name="payment" ng-blur="doTouched()" ng-model="user.payment[2]" ng-required="!someSelected(user.payment)"> Mastercard
    </label>
    <label class="checkbox-inline">
        <input type="checkbox" id="payment3" value="Cash" name="payment" ng-blur="doTouched()" ng-model="user.payment[3]" ng-required="!someSelected(user.payment)"> Cash
    </label>

    <div class="help-block" ng-messages="userForm.payment.$error" ng-show="userForm.payment.$invalid && userForm.payment.$touched">
        <div ng-messages-include="home/messages.html"></div>
    </div>
</div>

Answer 1

检查此示例:

http://plnkr.co/edit/2w0lIf?p=preview

复选框列表使用ng-required带有someSelected函数(在控制器中定义)的指令,该函数检查是否至少选择了一个项目:

<div class="form-group" ng-class="{ 'has-error' : userForm.subscribe.$invalid && userForm.subscribe.$touched }">
    <label class="checkbox-inline">
        <input type="checkbox" id="subscribe1" value="option1" name="subscribe" ng-blur="doTouched()" ng-model="user.subscribe[1]" ng-required="!someSelected(user.subscribe)"> 1
    </label>
    <label class="checkbox-inline">
        <input type="checkbox" id="subscribe2" value="option2" name="subscribe" ng-blur="doTouched()" ng-model="user.subscribe[2]" ng-required="!someSelected(user.subscribe)"> 2
    </label>
    <label class="checkbox-inline">
        <input type="checkbox" id="subscribe3" value="option3" name="subscribe" ng-blur="doTouched()" ng-model="user.subscribe[3]" ng-required="!someSelected(user.subscribe)"> 3
    </label>

    <div class="help-block" ng-messages="userForm.subscribe.$error" ng-show="userForm.subscribe.$invalid && userForm.subscribe.$touched">
        <div ng-messages-include="messages.html"></div>
    </div>
</div>

选项按钮组更容易,并使用ng-required带有以下条件的指令!user.gender:

<div class="form-group" ng-class="{ 'has-error' : userForm.gender.$invalid && userForm.gender.$touched }">
    <div class="radio">
        <label>
            <input type="radio" name="gender" value="male" ng-model="user.gender" ng-required="!user.gender"/>
            male
        </label>
    </div>
    <div class="radio">
        <label>
            <input type="radio" name="gender" value="female" ng-model="user.gender" ng-required="!user.gender"/>
            female
        </label>
    </div>

    <div class="help-block" ng-messages="userForm.gender.$error" ng-if="userForm.gender.$touched">
        <div ng-messages-include="messages.html"></div>
    </div>
</div>

该ngBlur指令解决了只有当列表中的所有项都模糊时,复选框列表才会被"触摸"的问题,调用doTouched()函数::

  $scope.doTouched = function() {
     $scope.userForm.subscribe.$setTouched();
  }

PS注意纠正名称:userForm是的在HTML名字<form>,user是被绑定的形式模型的名称.