Codeigniter上传PDF问题

Question

我正在使用 codeigniter 上传库上传 PDF，如果用户添加新闻，则上传 PDF，使用相同的表单添加新文章。两者的区别在于新闻稿需要 PDF，而新闻文章不需要。

但是，当我提交表单而不将 PDF 添加到上传字段时，我收到错误

您没有选择要上传的文件

我怎样才能让它没有上传文件？

function add ()
{

    $data = array();
    //set some validation rules

    $this->form_validation->set_rules('headline', 'headline', 'required|trim');
    $this->form_validation->set_rules('tagline', 'tagline', 'trim');
    $this->form_validation->set_rules('userfile', 'userfile', 'trim');
    $this->form_validation->set_rules('article', 'article', 'required|trim|htmlspecialchars');
    if ($this->form_validation->run() == FALSE)
    {
        $this->load->view('templates/admin_header.php', $data);
        $this->load->view('admin/news/add');
        $this->load->view('templates/footer.php');
    }
    else
    {
        //validation has been passed and we save the data and if there is one present we can upload the PDF
        if($this->input->post('userfile') != "")
        {
            $config['upload_path'] = './assets/doc/';
            $config['allowed_types'] = 'pdf';
            $config['max_size'] = '5000';

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

            if(!$this->upload->do_upload())
            {
                //try and do the upload if there is a problem we are going to show the form and an error
                $data['error'] = array('upload_error' => $this->upload->display_errors()); 
                //die(print_r($data, 'upload'));
                $this->load->view('templates/admin_header.php', $data);
                $this->load->view('admin/news/add', $data);
                $this->load->view('templates/footer.php');
            }
        }
        else
        {
            //everyhting has gone well the file has been upload so we can carry on and create an array of the POST data and the filename
            //to save in the database.
            //$file = $this->upload->data();
            $insertData = array(
                'headline' => $this->input->post('headline'),
                'tagline' => $this->input->post('tagline'),
                //'pdf' => //$file['file_name'],
                'article' => $this->input->post('article')
            );

            $this->load->model('newsArticles');
            $this->session->set_flashdata('sucess', 'Your news article was successfully saved');
            redirect('/admin/dashboard', 'redirect');
        }

    }



}

Answer 1

看起来您的第二个 }else{ 在 if(!do_upload) 之外，所以您没有完成您的功能。这是来自 CI 用户指南的示例上传脚本：

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);
    }
}

只需在do_uploadif之前使用if检查上传文件

Answer 2

错误只是说您没有选择文件，而您没有选择。当我这样做时，我只是忽略然后错误并继续前进。

但更简洁的方法是使用类似的东西：

if (isset($_FILES['userfile'])) {
    // upload the file 
    $this->upload->do_upload();
    // check errors etc
} else {
    // do nothing
}