我有一个允许用户上传多个文件的表单。此外，用户必须填写其他输入文本字段，如地址，电子邮件等。
我不知道如何使表单粘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。因为如果例如其中一个文件类型不被允许，我使用重定向来跳出负责上传每个文件的循环。
保持上传错误信息我使用$this->session->set_flashdata('errors'， $errors)，但我不能使用错误信息从form_validation库(echo form_error('field_name))和显示用户输入的表单字段(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');
}
}
主要的问题是你不能把验证规则文件上传，因为库是一个一个执行的。
一个简单的解决方案是验证您的字段，然后验证文件上传。例子:
<?php
function save()
{
$this->load->library('form_validation');
$this->form_validation->set_rules('name', 'Name', 'trim|required');
if($this->form_validation->run() == FALSE)
{
$this->form_validation->set_error_delimiters('', '<br />');
echo validation_errors();
exit();
}
else
{
if($_FILES['imagen']['error'] != 4)
{
$image $this->_manage_image($this->input->post('name'));
}
else
{
exit('No empty field!');
}
# save in your bd o success message...
}
}
function _manage_image($name)
{
# config
$config['upload_path'] = './images/products/';
$config['allowed_types'] = 'gif|jpg|png';
// ...
$config['file_name'] = $name;
$this->load->library('upload', $config);
if (!$this->upload->do_upload('image'))
{
# errors...
echo $this->upload->display_errors();
exit();
}
else
{
# upload
return $img_data['file_name'];
}
}