javascript - 使用 angularjs 清除输入字段

Question

让我重新表述我的问题，我在删除上传的文件时遇到问题，所以我按照建议对我的代码进行了一些修改，但它仍然不起作用，此外还存在覆盖我上传的文件的问题，所以每次我上传一些东西它只会覆盖以前的文件，我希望能够上传很多并删除它们，谢谢

<form class="htmlForm">
  <label for="id_payment_proof">{% trans "Payment proof:" %}</label>
  <div class="full-size">
    <div class="input-control full-size file" data-role="input">
      <input id="id_payment_proof" type="file" file-model="payment_proof"/>
      <button class="button"><span class="mif-folder"></span></button>
    </div>
  </div>
  <div ng-if="client_invoice.payment_proof_filename">
    <a ng-href="{{ client_invoice.payment_proof }}"
    ng-bind="client_invoice.payment_proof_filename"
    target="_blank"></a>
    <button class="button" ng_click="clearInvoice()">
      <span class="mif-bin"></span>
    </button>
  </div>
  {% endverbatim %}
</form>

Controller :

editInvoiceHandler = (event, row) ->
$scope.payment_proof = undefined
$scope.htmlFormEl.reset()
$scope.row = row
$scope.client_invoice = row.data()
hasChanges = false
$scope.editMode = true
$scope.$digest()

$scope.clearInvoice() = () ->
$scope.payment_proof = 0

Answer 1

我没有测试下面的代码，但认为它可能与您需要的类似:

$scope.payment_proof = []; // presume you don't want any pre-loaded entries
$scope.add(new_entry) = payment_proof.push(new_entry);
$scope.delete(index) = payment_proof.splice(index,1);
$scope.clearInvoice = {  $scope.payment_proof = [];  }
//Then submit the payment_proof to the back end

这个想法是操作一个数组(在您的例子中是 payment_proof )并将其提交到后端。