javascript - Bootstrap 模式中的 Laravel 4 验证

Question

我是 Laravel 4 的新手，我正在尝试在 Bootstrap 模式中进行表单验证。我的模式有一个带有文本输入和提交按钮的表单，我希望当验证失败时，模式向我显示错误。但是在验证和页面刷新之后，模态关闭。这是来自 Controller 和 View 的代码:
Controller 代码:

    public function postAvatar()
{
        $avatar_rules = array(
            'avatar_src' => 'url',

        );
        $validator = Validator::make(Input::all(), $avatar_rules);
        $validator->setAttributeNames(User::$names_attr); 

        if ($validator->passes()) 
        {                
        $avatar_src = (Input::get('avatar_src'))? Input::get('avatar_src') : URL::asset('assets/images/user/default-user-avatar.png');
        $user = User::find(Auth::id());
        $user->avatar_src = $avatar_src;

        if ($user){
         return Redirect::to('dashboard')->withSuccess("Success: avatar updated.");  
        }
        return Redirect::to('dashboard')->withError("Error: an error has occurred.");
        }
        return Redirect::back()->withErrors($validator);                
    }

查看代码:

    <!-- Modal -->
<div class="modal fade" id="avatarModal" tabindex="-1" role="dialog" aria-labelledby="avatarModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
        <h4 class="modal-title" id="avatarModalLabel">Update avatar</h4>
      </div>
      <div class="modal-body">
          <h4><span class="label label-info">Current avatar</span></h4>
          <img class="img-circle img-responsive dashboard-avatar" src="{{ $user->avatar_src }}" alt="{{ $user->username }} avatar">     
          <div class="divider"></div>
          <h4><span class="label label-info">New avatar</span></h4>
          {{ Form::open(array('url' => 'dashboard/avatar', 'method'=>'post', 'role'=>'form')) }}
            <ul>
                @foreach($errors->all() as $error)
                <div class="alert alert-danger" role="alert">{{ $error }}</div>
                @endforeach
            </ul>          
          <div class="form-group">
            <label for="avatar_src" class="control-label">Link avatar</label>
            <input type="text" name="avatar_src" class="form-control" id="avatar_src" placeholder="Link of avatar image url">
          </div>     
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="submit" class="btn btn-primary">Update</button>
      </div>
         {{ Form::close() }}       
    </div>
  </div>
</div>

我该如何解决？谢谢。

已解决:
Controller 代码:

public function postAvatar()
{
        $avatar_rules = array(
            'avatar_src' => 'url',

        );
        $validator = Validator::make(Input::all(), $avatar_rules);
        $validator->setAttributeNames(User::$names_attr); 

        if ($validator->passes()) 
        {                
        $avatar_src = (Input::has('avatar_src'))? Input::get('avatar_src') : URL::asset('assets/images/user/default-user-avatar.png');
        $user = User::find(Auth::id());
        $user->avatar_src = $avatar_src;

        if ($user->save()){
         if(Request::ajax()){
           return Response::json(array('success' => true));
        }
        }
        return Redirect::to('dashboard')->withError("Error: an error has occurred.");
        }
            return Response::json(array('errors' => $validator->errors()->toArray()));
        }

查看代码:

<!-- Modal -->
<div class="modal fade" id="avatarModal" tabindex="-1" role="dialog" aria-labelledby="avatarModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
        <h4 class="modal-title" id="avatarModalLabel">Update avatar</h4>
      </div>
      <div class="modal-body">
          <h4><span class="label label-info">Current avatar</span></h4>
          <img class="img-circle img-responsive dashboard-avatar" src="{{ $user->avatar_src }}" alt="{{ $user->username }} avatar">     
          <div class="divider"></div>
          <h4><span class="label label-info">New avatar</span></h4>
          {{ Form::open(array('url' => 'dashboard/avatar', 'id'=>'avatar_form', 'method'=>'post', 'role'=>'form')) }}
          <div class="alert alert-danger avatar_alert" role="alert" style="display: none">
              <ul></ul>
          </div>
            <ul>
            </ul>          
          <div class="form-group">
            <label for="avatar_src" class="control-label">Link avatar</label>
            <input type="text" name="avatar_src" class="form-control s_tooltip" id="avatar_src" placeholder="Avatar image links">
          </div>     
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="submit" class="btn btn-primary">Update</button>
      </div>
         {{ Form::close() }}       
    </div>
  </div>
</div>

Ajax :

<script>
$(document).on('submit', '#avatar_form', function(event){
    var info = $('.avatar_alert');
    event.preventDefault();
    var data = { avatar_src: $("#avatar_src").val() }

    $.ajax({
        url: "/dashboard/avatar",
        type: "POST",
        data: data,
    }).done(function(response) {
            info.hide().find('ul').empty();
        if(response.errors)
        {
            $.each(response.errors, function(index, error){
                info.find('ul').append(error);
            });
            info.slideDown();
        }
        else if(response.success){
          window.location.href = "/dashboard";
        }
    });
});
</script>

Answer 1

最好的办法是通过 AJAX 验证表单以避免完全重新加载页面。然后，您将检查 AJAX 请求的响应是否存在错误，如果存在，则在模态中显示它们。

您还可以添加客户端验证，以防止在满足规则之前发出请求。我不建议使用服务器端验证的这种 INSTEAD，但通常非常可取地使用它。

要做到这一点，您需要按照以下方式做一些事情:

Javascript:

捕获表单的提交事件并发出 AJAX 请求。

$(document).on('submit', 'form', function(event){
    event.preventDefault();

    var data = { avatar_src: $("#avatar_src").val(); };

    $.ajax({
        url: "/dashboard/avatar",
        data: data
        type: "POST",
    }).done(function(response) {
        if(response.errors)
        {
            // Add error to Modal Body
        }
        else
        {
            // Show success message, close modal?
        }
    });
});

后端:

修改您的 Controller 方法以检测当前请求是否为 AJAX 请求，如果是，则返回 JSON 格式的响应而不是重定向。例如:

if(Request::ajax())
{
    return Response::json(array('errors' => $validator->messages()));
}
else
{
    return Redirect::back()->withErrors($validator);
}

我没有测试过任何代码，因此可能包含一些拼写错误/错误，但希望这对您有所帮助!