Angular clear子表单数据和重置验证

Question

我正在尝试使用Angular.js

创建子表单<div ng-form="vacancyForm">

有一种具有多个字段的数据

• 标题
• 可用日期
• 价格

所有人都有required验证。

一旦我提交了这些数据，我就会用它做我需要的但是我想重置子表单以便所有字段都不脏并且表单有效，因为目前清除字段工作但是所有字段都是因为它们现在很脏而无效，但是将它们标记为无效。

示例字段

<div class="control-group" ng-class="getErrorClasses(vacancyForm.headline)">
     <label class="control-label" for="headline">Headline</label>
     <div class="controls">
         <input type="text" class="input-xlarge" id="headline" name="headline" required ng-model="new_vacancy.headline">
         <span class="help-inline" ng-show="showError(vacancyForm.headline, 'required')">This field is required</span>
      </div>
</div>

以下是提交时调用的函数

 $scope.addVacancy = function(){

        // save the submitted data
        $scope.school.vacancies.push($scope.new_vacancy);

        // now clear it out
        $scope.new_vacancy = {};
        $scope.new_vacancy.date = new Date();

        // this clears out all the fields and makes them all invalid 
        // as they are empty. how to reset the form???

    }

Answer 1

使用<form>标记并设置name属性，然后您可以$scope.formName.$setPristine();其中formName是name属性。当值发生变化时，元素不再是原始元素。

http://docs.angularjs.org/api/ng.directive:form.FormController#$setPristine

<强>更新
上面的答案仅针对1.2，但在1.3角度中引入了“触摸”输入的概念。现在，当元素模糊时，角度将标记该字段为触摸。与$setPristine类似，您可以使用$scope.formName.$setUntouched()设置输入。

https://docs.angularjs.org/api/ng/type/form.FormController#$setUntouched

触及vs pristine ：触摸表示字段已模糊，而原始表示字段的值已被修改。 Angular的文档指出，“将表单控制回其未触摸状态通常在将表单设置回其原始状态时很有用。”

修改
这是一个小提琴演示：https://jsfiddle.net/TheSharpieOne/a30kdtmo/

angular.module('myApp', [])
  .controller('myCtrl', myCtrl);

function myCtrl() {
  var vm = this;
  vm.reset = function() {
    vm.myForm.$setPristine();
    vm.myForm.$setUntouched();
    vm.email = vm.password = '';
  }
}

.ng-invalid.ng-touched {
  outline: 2px solid blue;
}
.ng-invalid.ng-dirty {
  outline: 2px solid red;
}
.ng-invalid.ng-dirty.ng-untouched {
  outline: 2px solid green;
}
form,
form div {
  padding: 5px 10px;
}
h3,
h4 {
  margin-bottom: 0;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.0/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl as ctrl">
  <form name="ctrl.myForm">
    <div>
      <label for="email">Email</label>
      <input name="myInput" type="email" ng-model="ctrl.email" id="email" required>
    </div>
    <div>
      <label for="password">Password</label>
      <input name="myPassword" type="password" minlength="8" ng-model="ctrl.password" id="password" required>
    </div>
    <div>
      <button ng-click="ctrl.reset()" type="button">Reset</button>
    </div>
  </form>
  <div>
    <h4>Form Level</h4>
    <div>$dirty: {{ctrl.myForm.$dirty}}</div>
    <div>$pristine: {{ctrl.myForm.$pristine}}</div>
    <h4>Input Level</h4>
    <h5>Email Input</h5>
    <div>$dirty: {{ctrl.myForm.myInput.$dirty}}</div>
    <div>$pristine: {{ctrl.myForm.myInput.$pristine}}</div>
    <div>$touched: {{ctrl.myForm.myInput.$touched}}</div>
    <h5>Password Input</h5>
    <div>$dirty: {{ctrl.myForm.myPassword.$dirty}}</div>
    <div>$pristine: {{ctrl.myForm.myPassword.$pristine}}</div>
    <div>$touched: {{ctrl.myForm.myPassword.$touched}}</div>
  </div>
  <div>
    <h3>Color outlines for input</h3>
    <div title="The form loads this way, it can still be invalid since required fields are empty to start with">untouched, pristine: no outline</div>
    <div title="Such as in the middle of typing a valid email for the first time">invalid, untouched, dirty: green outline</div>
    <div title="blurred with invalid input">invalid, touched, dirty: red outline</div>
    <div title="focued and blurred without typing">invalid, touched: blue outline</div>
  </div>
</div>