我有一个允许用户上传多个文件的表单。另外用户必须填写其他输入文本字段,如地址、电子邮件等。
如果错误来自文件上传以及如何访问由 form_validation 库设置的错误消息,我不知道如何使表单保持粘性。因为例如,如果不允许其中一种文件类型,我会使用重定向跳出负责上传每个文件的循环。
为了保持上传错误消息,我使用 $this->session->set_flashdata('errors', $errors) 但我无法使用来自 form_validation 库的错误消息( echo form_error('field_name) )并在表单字段 ( echo set_value('field_name'))
这是负责文件上传和数据插入的控制器方法:
function do_upload()
{
// load form validation library
$this->load->library('form_validation');
// set validation rules
$this->form_validation->set_rules('email','Email','trim|required|valid_email|matches[confirm_email]');
$this->form_validation->set_rules('confirm_email','Email','trim|required|valid_email');
$this->form_validation->set_rules('delivery_name','Nazwa','trim|required');
$this->form_validation->set_rules('delivery_street','Ulica','trim|required');
$this->form_validation->set_rules('delivery_city','Miasto','trim|required');
$this->form_validation->set_rules('delivery_postcode','Kod pocztowy','trim|required');
$this->form_validation->set_rules('delivery_country','Kraj','trim|required');
$this->form_validation->set_rules('captcha','Captcha','callback_check_captcha');
if ( $this->form_validation->run() )
{
// if validation passes I insert form data into database and I start to upload
// all the files using foreach loop
$config['upload_path'] = './uploads/upload_directory';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '0';
$upload_data = array();
$task_address_id_array = $this->MTasks->insertNewTask($task_directory);
$task_id = $task_address_id_array['task_id'];
$address_id = $task_address_id_array['address_id'];
// iterate over files to be uploaded
foreach ($_FILES as $key => $value)
{
if (!empty($value['name']))
{
$this->upload->initialize($config);
$result = $this->upload->do_upload($key);
if (!$result)
{
// if upload error occurs I need to redirect to break the loop
$errors = $this->upload->display_errors();
$this->session->set_flashdata('errors', $errors);
redirect();
}
else
{
$current_upload_data = $this->upload->data();
// insert upload data to database
$this->MTasks->insertFileInfo($current_upload_data,$task_id);
}
}
}
redirect('upload/success_message');
}
else
{
$this->load->view('include/header');
$this->load->view('upload_form',$this->data);
$this->load->view('include/footer');
}
}