Question

我需要在我的Codeigniter控制器中根据需要设置输入文件。这是我的form_validation：

$this->form_validation->set_rules('copertina','Foto principale','required|xss_clean');

这是表格：

<?php echo form_open_multipart('admin/canile/nuovo'); ?>
<li class="even">
    <label for="copertina">Foto principale <span>*</span></label>
    <div class="input"><input type="file" name="copertina" value="<?php echo set_value('copertina'); ?>" id="copertina" /></div>    
</li>
<?php echo form_close(); ?>

但是在提交表单后说文件没有设置，所以所需的clausole失败了...我该如何解决？

Answer 1

文件上传数据未存储在$_POST数组中，因此无法使用CodeIgniter的form_validation库进行验证。使用$_FILES数组，PHP可以使用文件上传。

在运行表单验证之前，可以使用$ _FILES数组中的数据直接操作$ _POST数组，但我还没有对此进行测试。最好只检查上传库进程是否有错误。

此外，出于安全原因，不可能（重新）设置页面重新加载的值。

Answer 2

要对文件进行验证，您必须检查它是否为空。

等

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

Answer 3

您可以通过覆盖CI_Form_Validation

的运行功能来解决此问题

在扩展CI_Form_Validation的类中复制此函数。

此函数将覆盖父类函数。在这里，我只添加了一个额外的检查，可以处理文件

/**
 * 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;
}

Answer 4

你看过这个 - ＆gt;

http://codeigniter.com/user_guide/libraries/file_uploading.html

<?php

class Upload extends CI_Controller {

    function __construct()
    {
        parent::__construct();
        $this->load->helper(array('form', 'url'));
    }

    function index()
    {
        $this->load->view('upload_form', array('error' => ' ' ));
    }

    function do_upload()
    {
        $config['upload_path'] = './uploads/';
        $config['allowed_types'] = 'gif|jpg|png';
        $config['max_size'] = '100';
        $config['max_width']  = '1024';
        $config['max_height']  = '768';

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

        if ( ! $this->upload->do_upload())
        {
            $error = array('error' => $this->upload->display_errors());

            $this->load->view('upload_form', $error);
        }
        else
        {
            $data = array('upload_data' => $this->upload->data());

            $this->load->view('upload_success', $data);
        }
    }
}
?>

根据评论更新：

如果你愿意，可以使用普通的php进行检查......

    $errors_file = array(
        0=>'Success!',
        1=>'The uploaded file exceeds the upload_max_filesize directive in php.ini',
        2=>'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form',
        3=>'The uploaded file was only partially uploaded',
        4=>'No file was uploaded',
        6=>'Missing a temporary folder',
        7=>'Cannot write file to disk'
    );

if($_FILES['form_input_file_name']['error'] == 4) {
 echo 'No file uploaded';
}
if($_FILES['form_input_file_name']['error'] == 0) {
 echo 'File uploaded... no errors';
}

Codeigniter - 表单验证不适用于文件

4 个答案: