是否codeIgniter在最后一步加载看法？ [英] Does CodeIgniter have to load view in the final step?

问题描述

我有一个函数

function do_something() {
    // process
    $this->load->view('some_view', $data);
    exec('mv /path/to/folder1/*.mp3 /path/to/folder2/');
}

我的目的是输出的看法后，移动文件。但很显然它渲染视图前完成。我的问题是， $这个 - ＆GT;负载＆gt;查看（）; 必须在一个函数的最后一步

My intention is to move files after outputting the view. But apparently it is done before rendering the view. My question is, does $this->load->view(); have to be the final step in a function?

我做了一点研究，好像我的问题是类似这个话题。是否正确？

I did a little research, and seems like my question is similar to this topic. Correct?

推荐答案

你为什么不只是使用 post_system 挂钩？最终的页面发送到浏览器后，这就是所谓的，这样你可以正常加载的意见，而不回显出来。

Why don't you just use a post_system hook? It's called after the final page is sent to the browser, that way you can load views normally, without echoing them out.

下面是一个例子控制器：

Here's an example controller:

class Home extends Controller {

    function index()
    {
        $this->move_audio = TRUE;
        $this->old_folder = "/path/to/folder/";
        $this->new_folder = "/path/to/folder2/";

        $this->load->view("some_view");
    }

}

和一个示例钩子：

function post_system()
{
    $CI =& get_instance();

    if( isset($CI->move_audio) && $CI->move_audio === TRUE)
    {
        // Trim, then add trailing slash for consitency
        $old_folder = rtrim($CI->old_folder, "/")."/*.mp3";
        $new_folder = rtrim($CI->new_folder, "/")."/";

        exec("mv {$old_folder} {$new_folder}");
    }
}

查看挂钩用户指南信息上设置起来。他们是你的朋友！

Check out the hooks user guide for info on setting them up. They are your friends!

编辑：东西我只是想的...

如果你只打算做这里面一个控制器方法......它可能会更好地使用菲尔的做法。这将避免一个钩呼吁这将是不必要的，如果你只需要一次请求。

If you're only going to be doing this inside one controller method... it would probably be better to use Phil's approach. This would avoid having a hook call for every request which would be unnecessary if you only need it once.

你可以做，如果你只需要一次，是用CI的 _output（）处理程序控制器（的此信息）。将工作是这样的：

Another thing you could do, if you only need it once, is use CI's _output() handler for Controllers (info here). That would work like this:

class Home extends Controller {

    // Initalize the var to avoid having to
    // check if it's set or not

    var $move_audio = FALSE;

    // CONTROLLER METHOD    
    function index()
    {
        $this->move_audio = TRUE;
        $this->old_folder = "/path/to/folder/";
        $this->new_folder = "/path/to/folder2/";

        $this->load->view("some_view");
    }

    // OUTPUT HANDLER
    function _output($output = "")
    {
        echo $output;

        if($this->move_audio === TRUE)
        {
            // Trim, then add trailing slash for consitency
            $old_folder = rtrim($this->old_folder, "/")."/*.mp3";
            $new_folder = rtrim($this->new_folder, "/")."/";

            exec("mv {$old_folder} {$new_folder}");
        }
    }
}

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