How to $setdirty to a single input

问题

I've got a little problem. I want to set to dirty a single input, I mean, because when I give a value automatically it stays in pristine class, doesn't change, and doesn't save the new value.

If I edit it, it works and change the class. I want to cancel that pristine class. If anyone know please let me know.

<form class="form-horizontal" ng-repeat="studiant in studiants" name="form" id="form">

  <input type="hidden" name="id" value="{{studiant.studiant_id}}" class="form-control" disabled>

  <div class="form-group">
    <label for="school" class="col-md-2 control-label">School</label>
    <div class="col-md-1">
      <input type="text" id="school" name="school" class="form-control" ng-init="studiant.school=studiant.studiant_school" ng-model="studiant.school">
    </div>
  </div>
  <div class="form-group">
    <label for="name" class="col-md-2 control-label">Student's Name</label>
    <div class="col-md-10">
      <input type="text" id="name" name="name" class="form-control" ng-init="studiant.name=studiant.studiant_name" ng-model="studiant.name">
    </div>
  </div>
</form>

And the script:

document.getElementbyId('name').value = "anything";

Or, if I doing wrong and I have to change the value with ng-model or something, please help me.

回答1:

http://plnkr.co/edit/bVoljJqiK3CLB2xqZ6Zm?p=preview

You can see a working example there.

Make sure you have the name attr set for the form and the input.

HTML Example:

<button id="dirty-button" ng-click="addText(); myForm.myText.$setDirty()">Make Dirty</button>
<hr> 
<form name="myForm">   
<input name="myText" id="myTextInput" type="text" ng-model="myText" required>
</form>
<br/>
<span ng-show="myForm.myText.$dirty">it's dirty now</span>

A simple function:

$scope.addText = function() {
  $scope.myText = "now I'm dirty";
}

回答2:

$scope.$on('$viewContentLoaded'){
 $scope.form.fieldName.$dirty = true;
 }

When your view is loaded then angular calls viewContentLoaded event is called. After that you can set the field dirty. And also if you want to call some method ,that should be executed after the content is loaded than you should call that method inside this $scope.$on('$viewContentLoaded'){..}