php - CodeIgniter - 文件上传需要验证

Question

我有 2 个文本字段和 1 个文件上传，这些都是必需的。当我只需要文本字段时，一切正常，但是当我需要文件上传时，验证错误仍然说需要文件，即使我选择了一个文件。有人知道我做错了什么吗？非常感谢。

// View

<?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(); ?>

// Controller

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();

            }
        }
    }
}

Answer 1

我找到了一个完全符合我要求的解决方案。

我变了

$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');

到

$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');
}