即使选择了文件，也会显示CodeIgniter文件验证

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我遇到了大麻烦，是CI的新手。我没有发现我的错误。我只是尝试上传需要验证的文件，但如果我选择该文件，它仍会显示所需的验证错误消息。休息验证对我来说很好。当我没有选择文件时，它显示错误'请选择文件'。这是正确的，但即使在我选择文件后也会显示相同的错误。我不明白，我完全错过了什么。这是我的代码。

 $this->form_validation->set_rules('list_name', 'List Name', 'required');
            $this->form_validation->set_rules('name_product', 'Product Name', 'required');
            $this->form_validation->set_rules('description', 'Description','required');
            $this->form_validation->set_rules('cost_of_list', 'Cost of list','numeric|required');
              $this->form_validation->set_rules('user_file', 'Document', 'callback_file_selected_test');
            // Validation for Excel file upload
              /* if (empty($_FILES['file']['name'])) {
                   $this->form_validation->set_rules('file', 'Document', 'required');
                } */

               if ($this->form_validation->run() == FALSE) {

                   echo json_encode(array( 'status' => false, 'msg' => validation_errors())); 
                  }

file_selected_test函数

function file_selected_test(){

        $this->form_validation->set_message('file_selected_test', 'Please select file.');
        if (empty($_FILES['user_file']['tmp_name'])) {
                return false;
            }else{
                return true;
            }
    }

以下代码是View

<div class="modal fade" id="modal_form" role="dialog">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h3 class="modal-title">List Information</h3>
      </div>
      <div class="modal-body form">
        <div id="validation-error" style="color:red;"></div>

       <form action="#" id="form" class="form-horizontal" enctype="multipart/form-data">
          <input type="hidden" name="product_id"/>
          <div class="form-body">
            <div class="form-group">
             <div class="col-md-3"> <label class="control-label">List Name</label></div>
              <div class="col-md-9">
                <input name="list_name" placeholder="List Name" class="form-control" type="text" required="required">
              </div>
            </div>
            <div class="form-group">
            <div class="col-md-3"><label class="control-label ">Product Name</label></div>
            <div class="col-md-9">
             <select class="form-control" name="name_product" placeholder="Product Name"  class="form-control" id="name_product"  >
<option disabled selected value> -- Select An Option -- </option>          
           <?php 

            foreach($products as $product)
            { 
              echo '<option value="'.$product->product_id.'">'.$product->name_product.'</option>';
            }
            ?>
            </select>
            </div>
            </div>
            <div class="form-group">
              <div class="col-md-3"><label class="control-label">Description</label></div>
              <div class="col-md-9"> 
                <textarea class="form-control" rows="3" id="comment" name="description" ></textarea>
              </div>
            </div>
             <div class="form-group">
              <div class="col-md-3"><label class="control-label">Cost of List</label></div>
              <div class="col-md-9"> 
                <input type="text" class="form-control" id="" name="cost_of_list" ></textarea>
              </div>
            </div>
            <div class="form-group">
            <div class="col-md-3"><label class="control-label">Select File</label></div>

            <div class="col-md-9"> 
<input id="input-2" name="user_file" type="file" class="file"  >
                </div>
                </div>  
 <div class="form-group" id="companyCount" style="display:none;">
 <div class="col-md-3"><label class="control-label">No of companies</label></div>

              <div class="col-md-9">
                <input name="no_of_companies" placeholder="No of companies" class="form-control" type="text" required="required">
              </div>
            </div>

 <div class="form-group" id="contactsCount" style="display:none;">
             <div class="col-md-3"><label class="control-label">No of Contacts</label></div>
              <div class="col-md-9">
                <input name="no_of_contacts" placeholder="No of Contacts" class="form-control" type="text" >
              </div>
            </div>          
            <div id="search_rolebase"  style="display:none;">
<div class="form-group" >
             <div class="col-md-12" style="text-align:center"><label class="control-label">Search criteria for Rolebase</label></div>
</div>             
             <div class="form-group" id="">

                <div class="col-md-3"><label class="control-label">Titles</label></div>


              <div class="col-md-9">
                <input name="titles" placeholder="Titles" class="form-control" type="text" >
              </div>
              </div>
               <div class="form-group" id="">
               <div class="col-md-3"><label class="control-label">Country</label></div>
              <div class="col-md-9">
                <input name="country" placeholder="Country" class="form-control" type="text" >
              </div>
              </div>
              </div>
              <div id="search_accountbase"  style="display:none;">
             <div class="form-group" >
             <div class="col-md-12" style="text-align:center">
             <label class="control-label">Search criteria for Account Base</label></div></div>             
             <div class="form-group" id="">

                <div class="col-md-3"><label class="control-label">Region</label></div>


              <div class="col-md-9">
                <input name="region" placeholder="Region" class="form-control" type="text" >
              </div>
              </div>
              </div>
            </div>
          </div>
        </form>
          </div>
          <div class="modal-footer">
            <button type="button" id="btnSave" onclick="save()" class="btn btn-primary">Save</button>
            <button type="button" class="btn btn-danger" data-dismiss="modal">Cancel</button>
          </div>
        </div><!-- /.modal-content -->
      </div><!-- /.modal-dialog -->
    </div><!-- /.modal -->

不工作甚至更新到codeigniter功能上传功能显示相同的结果，这是代码

 $file_path = realpath(APPPATH . '../uploads/files/');

                $config['upload_path']          = $file_path;
                $config['allowed_types']        = '*';
               // $config['max_size']             = 100;
               // $config['max_width']            = 1024;
               //  $config['max_height']           = 768;

            $this->upload->initialize($config);     

               if(!$this->upload->do_upload('userfile'))
               {
                    echo json_encode(array( 'status' => false, 'msg' => $this->upload->display_errors()));
                }

它显示错误“您没有选择要上传的文件”。但是当我单独为上传进行编码时，它工作正常。

答案

Your validation Code:

$this->form_validation->set_rules('list_name', 'List Name', 'required');
$this->form_validation->set_rules('name_product', 'Product Name', 'required');
$this->form_validation->set_rules('description', 'Description','required');
$this->form_validation->set_rules('cost_of_list', 'Cost of list','numeric|required');
$this->form_validation->set_rules('user_file', 'Document', 'callback_file_selected_test');

Try This Way:

$this->form_validation->set_rules('list_name', 'List Name', 'required');
$this->form_validation->set_rules('name_product', 'Product Name', 'required');
$this->form_validation->set_rules('description', 'Description','required');
$this->form_validation->set_rules('cost_of_list', 'Cost of list','numeric|required');

if (empty($_FILES['user_file']['name']))
{
    $this->form_validation->set_rules('user_file', 'Document', 'required');
}

试试这个条件：

if($_FILES['userfile']['error'] != 4)
{
 return false;
}

$_FILES['userfile']['error'] != 4用于上传所需的文件。

另一答案

尝试将tmp_name更改为name，因为它在传递值as given in this link时可以为NULL

将代码更改为

function file_selected_test（）{

    $this->form_validation->set_message('file_selected_test', 'Please select file.');
    if (empty($_FILES['user_file']['name'])) {
            return false;
        }else{
            return true;
        }
}

也试试这种方式

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