CodeIgniter - 文件上傳需要驗證

我有2個文本字段和1個文件上傳都是必需的。當我只需要文本字段時，一切正常，但是當我需要文件上傳時，驗證錯誤仍然表示需要文件，即使我選擇了一個文件。任何人都知道我在做什麼錯了？提前謝謝了。CodeIgniter - 文件上傳需要驗證

//視圖

<?php echo form_open_multipart('add'); ?> 

<fieldset> 
    <input type="text" name="name" /><br> 
    <input type="text" name="code" /><br> 
    <input type="file" name="userfile" /><br><br> 
    <input type="submit"value="Add" /> 
</fieldset> 

<?php echo form_close(); ?>

//控制器

public function add() { 

    $this->form_validation->set_rules('name', 'Name', 'required'); 
    $this->form_validation->set_rules('code', 'Code', 'required'); 
    //$this->form_validation->set_rules('userfile', 'Document', 'required'); 
    //when the above line is active the upload does not go through 

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

     $data['page_view'] = $this->page_view; 
     $data['page_title'] = $this->page_title; 
     $this->load->view('template', $data); 
    } 
    else 
    { 
     $this->load->library('upload'); 

     if (!empty($_FILES['userfile']['name'])) 
     { 
      $config['upload_path'] = './uploads/'; 
      $config['allowed_types'] = 'gif|jpg|png|jpeg';  

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

      if ($this->upload->do_upload('userfile')) 
      { 
       $img = $this->upload->data(); 
       $file_name = $img['file_name']; 

       $name = $this->input->post('name'); 
       $code = $this->input->post('code'); 

       $this->load->model('create', 'create_model'); 
       $this->create_model->create_entry($name, $code, $file_name); 

       $data['page_view'] = $this->page_view; 
       $data['page_title'] = $this->page_title; 
       $this->load->view('template', $data); 
      } 
      else 
      { 
       echo $this->upload->display_errors(); 

      } 
     } 
    } 
}

來源

2012-09-05 Staysee

我有一個建議，更好地插入你的HTML了。 – Red

好吧，我添加了html，它非常基本，但不知道它是否會有所幫助。 – Staysee

這可能是因爲您試圖上傳太大的文件。嘗試上傳較小的文件，如果它工作正常，那麼您可能需要更改'php.ini'中的設置，以便可以上傳更大的文件。另外，如果你想快速調試這個，我建議你在''_FILES'超全局變量上做'var_dump（）'，看看文件上傳的錯誤代碼是什麼。 –

我找到了一個完全按照我的需要工作的解決方案。

我改變

$this->form_validation->set_rules('name', 'Name', 'trim|required'); 
$this->form_validation->set_rules('code', 'Code', 'trim|required'); 
$this->form_validation->set_rules('userfile', 'Document', 'required');

要

$this->form_validation->set_rules('name', 'Name', 'trim|required'); 
$this->form_validation->set_rules('code', 'Code', 'trim|required'); 
if (empty($_FILES['userfile']['name'])) 
{ 
    $this->form_validation->set_rules('userfile', 'Document', 'required'); 
}

來源

2012-09-10 18:13:56 Staysee

您是否嘗試過驗證需要哪種文件類型？ –

檢查該表單驗證擴展庫，可以幫助你驗證文件，與當前的表單驗證當您驗證上傳字段其視爲輸入提交空值已空的表單驗證庫看起來真的很好的擴展

MY_Formvalidation

來源

2012-09-06 04:11:03 umefarooq

CodeIgniter的文件上傳可選...完美的作品...... :)

----- -----控制器---------

function file() 
{ 
$this->load->view('includes/template', $data); 
} 

function valid_file() 
{ 
$this->form_validation->set_rules('userfile', 'File', 'trim|xss_clean'); 

if ($this->form_validation->run()==FALSE) 
{ 
    $this->file(); 
} 
else 
{ 
    $config['upload_path'] = './documents/'; 
    $config['allowed_types'] = 'gif|jpg|png|docx|doc|txt|rtf'; 
    $config['max_size']  = '1000'; 
    $config['max_width']  = '1024'; 
    $config['max_height'] = '768'; 

    $this->load->library('upload', $config); 

    if (!$this->upload->do_upload('userfile',FALSE)) 
    { 
    $this->form_validation->set_message('checkdoc', $data['error'] = $this->upload->display_errors()); 

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

    } 
    else 
    { 
    return true; 
    } 
}

我只是用這個線，使得它可選，

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

$_FILES['userfile']['error'] != 4 is for file required to upload.

你可以把它無需使用$_FILES['userfile']['error'] != 4，那麼它會通過此錯誤所需的文件，並與其他類型的錯誤，如果任何的偉大工程使用回報虛假，希望工程ü....

來源

2013-05-11 13:00:02

您可以通過覆蓋CI_Form_Validation

的運行功能

複製本功能解決呢擴展CI_Form_Validation的類。

該函數將覆蓋父類函數。在這裏，我只加一個額外的檢查，它可以處理文件還

/** 
* Run the Validator 
* 
* This function does all the work. 
* 
* @access public 
* @return bool 
*/ 
function run($group = '') { 
    // Do we even have any data to process? Mm? 
    if (count($_POST) == 0) { 
     return FALSE; 
    } 

    // Does the _field_data array containing the validation rules exist? 
    // If not, we look to see if they were assigned via a config file 
    if (count($this->_field_data) == 0) { 
     // No validation rules? We're done... 
     if (count($this->_config_rules) == 0) { 
      return FALSE; 
     } 

     // Is there a validation rule for the particular URI being accessed? 
     $uri = ($group == '') ? trim($this->CI->uri->ruri_string(), '/') : $group; 

     if ($uri != '' AND isset($this->_config_rules[$uri])) { 
      $this->set_rules($this->_config_rules[$uri]); 
     } else { 
      $this->set_rules($this->_config_rules); 
     } 

     // We're we able to set the rules correctly? 
     if (count($this->_field_data) == 0) { 
      log_message('debug', "Unable to find validation rules"); 
      return FALSE; 
     } 
    } 

    // Load the language file containing error messages 
    $this->CI->lang->load('form_validation'); 

    // Cycle through the rules for each field, match the 
    // corresponding $_POST or $_FILES item and test for errors 
    foreach ($this->_field_data as $field => $row) { 
     // Fetch the data from the corresponding $_POST or $_FILES array and cache it in the _field_data array. 
     // Depending on whether the field name is an array or a string will determine where we get it from. 

     if ($row['is_array'] == TRUE) { 

      if (isset($_FILES[$field])) { 
       $this->_field_data[$field]['postdata'] = $this->_reduce_array($_FILES, $row['keys']); 
      } else { 
       $this->_field_data[$field]['postdata'] = $this->_reduce_array($_POST, $row['keys']); 
      } 
     } else { 
      if (isset($_POST[$field]) AND $_POST[$field] != "") { 
       $this->_field_data[$field]['postdata'] = $_POST[$field]; 
      } else if (isset($_FILES[$field]) AND $_FILES[$field] != "") { 
       $this->_field_data[$field]['postdata'] = $_FILES[$field]; 
      } 
     } 

     $this->_execute($row, explode('|', $row['rules']), $this->_field_data[$field]['postdata']); 
    } 

    // Did we end up with any errors? 
    $total_errors = count($this->_error_array); 

    if ($total_errors > 0) { 
     $this->_safe_form_data = TRUE; 
    } 

    // Now we need to re-set the POST data with the new, processed data 
    $this->_reset_post_array(); 

    // No errors, validation passes! 
    if ($total_errors == 0) { 
     return TRUE; 
    } 

    // Validation fails 
    return FALSE; 
}

來源

2015-04-29 08:35:25

您可以使用回撥功能，這樣

$this->form_validation->set_rules('userfile', 'Document', 'callback_file_selected_test'); 

    if ($this->form_validation->run() == FALSE) { 
     //error 
    } 
    else{ 
      // success  
     } 

function file_selected_test(){ 

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

來源

2015-08-11 11:06:44

就像一個魅力。 – jayz

設定的規則來檢查文件名（如果形式是多部分）

$this->form_validation->set_rules('upload_file[name]', 'Upload file', 'required', 'No upload image :(');
ö verwrite的$_POST排列如下：

$_POST['upload_file'] = $_FILES['upload_file']
然後執行：

$this->form_validation->run()

來源

2017-11-29 15:01:26

CodeIgniter - 文件上傳需要驗證

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