使用Angular-material验证表单

Question

如何使用Angular-material验证表单,我需要两个功能:1)如果必填字段为空,请单击"提交时显示错误消息".2)如果表单字段无效,请勿发送帖子请求(避免提交).下一个代码避免提交,但是在单击时它不显示错误消息,仅当光标离开每个输入字段时.

 <form name="userForm">
<md-input-container>
    <input name="email" placeholder="Email" data-ng-model="vm.registerUserData.email" required />
    <div ng-messages="userForm.email.$error" ng-if='userForm.myControl.$dirty'>
      <div ng-message="required">This is required!</div>
    </div>
</md-input-container>

<md-input-container>
    <input name="Password" placeholder="Password" data-ng-model="vm.registerUserData.password" required />
     <div ng-messages="userForm.Password.$error">
     <div ng-message="required">This is required!</div>
     </div>
 </md-input-container>                             

 <md-input-container>
    <md-button id="registerUser" value="Register" class="md-raised md-primary" ng-click="userForm.$valid &&  vm.registerUser()" aria-label="login" ng-disabled="login.loginForm.$invalid()">
      Create
     </md-button>
</md-input-container>
 </form>

Answer 1

你错过了两件事.

第一:添加type="submit"到您的md-button元素.

第二:添加novalidate到您的form元素:

请注意,novalidate用于禁用浏览器的本机表单验证.

您还应该考虑ng-submit在form元素上使用而不是ng-click在按钮上使用.

<form name="userForm" novalidate ng-submit="userForm.$valid &&  vm.registerUser()">
    <md-input-container>
        <input name="email" placeholder="Email" data-ng-model="vm.registerUserData.email" required />
        <div ng-messages="userForm.email.$error" ng-if='userForm.myControl.$dirty'>
            <div ng-message="required">This is required!</div>
        </div>
    </md-input-container>

    <md-input-container>
        <input name="Password" placeholder="Password" data-ng-model="vm.registerUserData.password" required />
        <div ng-messages="userForm.Password.$error">
            <div ng-message="required">This is required!</div>
        </div>
    </md-input-container>                             

    <md-input-container>
        <md-button type="submit" id="registerUser" value="Register" class="md-raised md-primary" aria-label="login" ng-disabled="login.loginForm.$invalid()">
            Create
        </md-button>
    </md-input-container>
</form>