错误条件的代码点火器加载视图 - Codeigniter loading view for error conditions

我有一个表单，在表单的操作函数中，我使用CI表单验证，并检查文件类型验证。代码共享如下：

function index()
    {       
        $data['dropdown'] = lang_dropdown();  // multilanguage dropdown list
        $data['language']=$this->session->userdata('site_language');
        $data['page']='video/upload';
        $this->form_validation->set_rules('name', 'Name', 'required|trim|xss_clean|max_length[255]');           
        $this->form_validation->set_rules('video_type', 'Video genre', 'required');         
        $this->form_validation->set_rules('mlanguage', 'Language', 'required');     
        $this->form_validation->set_rules('length', 'Length', 'required|is_numeric');           
        $this->form_validation->set_rules('trailer', 'Trailer', 'is_numeric');          
        if (empty($_FILES['video']['name']))
        {
            $this->form_validation->set_rules('video', 'Video', 'required');
        }       
        else 
        {
            $extn = end(explode(".", $_FILES['video']['name']));
            if($extn!='mpeg' || $extn!='mp4' || $extn!='mpg' || $extn!='mpe' || $extn!='qt' || $extn!='mov' || $extn!='avi' || $extn!='movie' || $extn!='wmv' || $extn!='flv' || $extn!='3gp' || $extn!='mkv' || $extn!='dv' || $extn!='m4u' || $extn!='m4v' || $extn!='mxu' || $extn!='rv' || $extn!='ogv')
            { 
                $data['videomsg']='<span class="error">Please upload a video of supported format</span>';
                $this->load->view('layout/template',$data);  // here not getting redirected even the control comes to this condition
            }
        }
        $this->form_validation->set_rules('link', 'Link', 'max_length[255]');   
        if (empty($_FILES['thumb_image']['name']))
        {
            $this->form_validation->set_rules('thumb_image', 'Thumb Image', 'required|max_length[255]');    
        }
        else 
        {
            $imgextn = end(explode(".", $_FILES['thumb_image']['name']));
            if($imgextn!='jpg' || $imgextn!='png' || $imgextn!='jpeg' || $imgextn!='gif' || $imgextn!='bmp' || $imgextn!='jpe' || $imgextn!='tiff' || $imgextn!='tif')
            {
                $data['imgerror']='<span class="error">Please upload an image of supported format</span>';
                $this->load->view('layout/template',$data);
            }
        }
        ..........................................      
        $this->form_validation->set_rules('description', 'Description', 'required|xss_clean|max_length[500]');          
        $this->form_validation->set_rules('keywords', 'Keywords', '');
        $this->form_validation->set_rules('accept_terms', '...', 'callback_accept_terms');
        $this->form_validation->set_error_delimiters('<span class="error">', '</span>');
        ..............................

        if ($this->form_validation->run() == FALSE) // validation hasn't been passed
        {
            $this->load->view('layout/template',$data);
        }
        else // passed validation proceed to post success logic
        {
            ...................................
            ...................................
            redirect('video/upload');
        }
    }

如果满足任何错误条件，那么我想重定向到上传页面，并附上相应的消息。重定向在这种情况下不起作用。问题是在线路中，

if (empty($_FILES['video']['name']))
        {
            $this->form_validation->set_rules('video', 'Video', 'required');
        }       
        else 
        {
            $extn = end(explode(".", $_FILES['video']['name']));
            if($extn!='mpeg' || $extn!='mp4' || $extn!='mpg' || $extn!='mpe' || $extn!='qt' || $extn!='mov' || $extn!='avi' || $extn!='movie' || $extn!='wmv' || $extn!='flv' || $extn!='3gp' || $extn!='mkv' || $extn!='dv' || $extn!='m4u' || $extn!='m4v' || $extn!='mxu' || $extn!='rv' || $extn!='ogv')
            { 
                $data['videomsg']='<span class="error">Please upload a video of supported format</span>';
                $this->load->view('layout/template',$data);
            }
        }

如果上传的文件不是视频文件，则控件处于条件下，但不会重定向到上传页面。现在发生的情况是，它正在重定向到带有Successfully uploaded the video !消息的上传页面，该消息将把数据插入数据库并创建文件夹。

我该如何解决这个问题？我不需要redirect()，因为我必须将错误消息传递到上传页面。我怎样才能做到这一点。有人能帮我做这个吗？

提前谢谢。

试试这个

if (!empty($_FILES))
            {
                if ($_FILES["video"]["error"] > 0)
                {
                  echo "<div style='float: left;color:red; padding: 10px; class='file_upload_error'>Error: " . $_FILES["video"]["error"]."</div>";
                  return FALSE;
                }
                $file = $_FILES['video']['tmp_name'];
                // Validate the file type
                $fileTypes = array('avi','mp4','mpg','mov'); // File extensions
                $fileParts = pathinfo(strtolower($_FILES['video']['name']));
                if (!in_array($fileParts['extension'],$fileTypes)) {
                    $data['error'] = '<div style="float: left;color:red; padding: 10px;">Invalid file type. &nbsp;&nbsp;&nbsp;</div>';
                    $this->load->view('layout/template',$data);
                }
                else{
                    $ext = pathinfo($_FILES['video']['name'], PATHINFO_EXTENSION);
                    move_uploaded_file($_FILES['video']['tmp_name'], $uploaddir.$filename.".".$ext);
                }
            }else{
                $data['error'] = '<div style="float: left;color:red; padding: 10px;" class="file_upload_error">Something went wrong, the file was not uploaded.<br />Please try again later..</div>';
                $this->load->view('layout/template',$data);
            }