如何通过ng-messages指令获取元素inputName？

Question

如何在不知道输入名称的情况下触发错误消息？请参见下面的代码：

<input class="form-control" 
      id="{{field.field_id}}" 
      set-name="{{field.field_id}}" 
      type="text" 
      ng-model="field.field_value" 
      ng-minlength="field.field_char_num_min" 
      ng-maxlength="field.field_char_num_max"/> 

    <div ng-messages="don't know the input name yet" class="my-messages"> 
     <div ng-message="minlength">Your field is too short</div> 
     <div ng-message="maxlength">Your field is too long</div> 
    </div> 

在ng-messages应该从输入写入路径的错误，好像myForm.inputName.$error。但输入将自动生成并附加，因此我不能写入名称，因为生成器会设置名称。我必须获得输入名称。我该怎么做？

Answer 1

尝试这样的事情在NG-消息

<form name="formName"> 
<input type="text" id="anyName" name="anyName" required/> 
    <span ng-show="formName.anyName.$error.required"> Please enter a value.</span>        
</form> 

Answer 2

你可以使用field[field.field_id]['$invalid']确定字段是否有效与否，然后使用field[field.field_id]['$error']显示minlength & maxlength错误

标记

<div ng-show="field[field.field_id]['$invalid']" class="my-messages"> 
    <div ng-message="field[field.field_id]['$error'].minlength">Your field is too short</div> 
    <div ng-message="field[field.field_id]['$error'].maxlength">Your field is too long</div> 
</div>