[英]How to form validate joint drop down menu in angular?
HTML:
<form name="loginForm" ng-submit="submit()" novalidate>
<select name="Month" ng-required="true" ng-model="dob.Month">
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<select name="Year" ng-required="true" ng-model="dob.Year">
<option>1</option>
<option>2</option>
<option>3</option>
</select>
</form>
我希望错误消息为(需要选择月,年!)
有类似的东西:
<span ng-if="loginForm.Year.$error.required">This is required!</span>
<span ng-if="loginForm.Month.$error.required">This is required!</span>
但我希望将错误消息显示为(需要选择月,年!)
有没有办法为这些选择菜单创建forloop并查看它们是否为$ invalid-必需?
如果您希望在月份或年份无效的情况下显示相同的错误消息,则可以将上面的两个错误消息合并为一条消息,如下所示:
<span ng-if="loginForm.Year.$error.required || loginForm.Month.$error.required">
Month and Year need to be selected!
</span>
如果两者均未选中,或者一个都没有选中,则将显示错误消息。
编辑:
为了实现所需的行为,您应该具有三个具有不同ng-if条件的单独错误消息,如下所示:
<p>
<span ng-if="selectsForm.month.$error.required && selectsForm.year.$error.required">Month and year must be selected!</span>
<span ng-if="selectsForm.$dirty && (selectsForm.month.$error.required || !selectsForm.year.$error)">Month needs to be selected!</span>
<span ng-if="selectsForm.$dirty && (selectsForm.year.$error.required || !selectsForm.month.$error)">Year needs to be selected!</span>
</p>
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