wp_rewrite 在 WordPress 插件中 [英] wp_rewrite in a WordPress Plugin

问题描述

好的，我得到了这段代码，我一直在用它来向我的应用程序发送消息.它一直工作到今天.我已经删除了以下代码中的所有逻辑以使其更简单.但它应该工作"有人可以帮我把这段代码修复到它可以工作的地方，并且做得对吗?我知道它被黑客入侵了，但直到今天它似乎都没有任何问题.我没有更新任何东西，不知道交易是什么.

Ok, I've got this code that I've been using to spit out news to an application of mine. It was working until today. I've cutout all the logic in the following code to make it simpiler. But it should "WORK" Can someone help me fix this code to where it works, and is done right? I know it's hacked together , but it didn't seem to have any problems until today. I have not updated anything, don't know what the deal is.

 Plugin Name:   MyPlugin Example
 Version:       1.0.1


If ( ! class_exists("MyPlugin") )
{
    class MyPlugin
    {
        var $db_version = "1.0"; //not used yet

        function init()
        {
   //Nothing as of now.
        }
        function activate()
        {
            global $wp_rewrite;
            $this->flush_rewrite_rules();
        }

        function pushoutput( $id )
        {
            $output->out =' The output worked!';
            $this->output( $output );

        }
        function output( $output )
        {
            ob_start();
            ob_end_clean();
            header( 'Cache-Control: no-cache, must-revalidate' );
            header( 'Expires: Mon, 26 Jul 1997 05:00:00 GMT' );
            header( 'Content-type: application/json' );

            echo json_encode( $output );
            //Must encode this...
        }

        function flush_rewrite_rules()
        {
            global $wp_rewrite;
            $wp_rewrite->flush_rules();
        }

        function createRewriteRules( $rewrite )
        {
            global $wp_rewrite;
            $new_rules = array( 'MyPlugin/(.+)' => 'index.php?MyPlugin=' . $wp_rewrite->preg_index(1) );
            if ( ! is_array($wp_rewrite->rules) )
            {
                $wp_rewrite->rules = array();
            }
            $wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
            return $wp_rewrite;
        }


        function add_query_vars( $qvars )
        {
            $qvars[] = 'MyPlugin';
            return $qvars;
        }
        function template_redirect_intercept()
        {
            global $wp_query;
            if ( $wp_query->get('MyPlugin') )
            {
                $id = $wp_query->query_vars['MyPlugin'];
                $this->pushoutput( $id );


                exit;
            }
        }
    }
}
If ( class_exists("MyPlugin") )
{
    $MyPluginCode = new MyPlugin();
}
If ( isset($MyPluginCode) )
{
    register_activation_hook( __file__, array($MyPluginCode, 'activate') );
    add_action( 'admin-init', array(&$MyPluginCode, 'flush_rewrite_rules') );
    //add_action( 'init', array(&$MyPluginCode, 'init') );
    add_action( 'generate_rewrite_rules', array(&$MyPluginCode, 'createRewriteRules') );

    add_action( 'template_redirect', array(&$MyPluginCode, 'template_redirect_intercept') );
    // add_filter( 'query_vars', array(&$MyPluginCode, 'add_query_vars') );
}

推荐答案

我在此过程中对您的代码进行了一些更改，但这对我有用:

I changed a little bit of your code in the process, but this worked for me:

<?php

/**
* Plugin Name:   MyPlugin Example
* Version:       1.0.1
**/
class MyPlugin {

    function activate() {
        global $wp_rewrite;
        $this->flush_rewrite_rules();
    }

    // Took out the $wp_rewrite->rules replacement so the rewrite rules filter could handle this.
    function create_rewrite_rules($rules) {
        global $wp_rewrite;
        $newRule = array('MyPlugin/(.+)' => 'index.php?MyPlugin='.$wp_rewrite->preg_index(1));
        $newRules = $newRule + $rules;
        return $newRules;
    }

    function add_query_vars($qvars) {
        $qvars[] = 'MyPlugin';
        return $qvars;
    }

    function flush_rewrite_rules() {
        global $wp_rewrite;
        $wp_rewrite->flush_rules();
    }

    function template_redirect_intercept() {
        global $wp_query;
        if ($wp_query->get('MyPlugin')) {
            $this->pushoutput($wp_query->get('MyPlugin'));
            exit;
        }
    }

    function pushoutput($message) {
        $this->output($message);
    }

    function output( $output ) {
        header( 'Cache-Control: no-cache, must-revalidate' );
        header( 'Expires: Mon, 26 Jul 1997 05:00:00 GMT' );

        // Commented to display in browser.
        // header( 'Content-type: application/json' );

        echo json_encode( $output );
    }
}

$MyPluginCode = new MyPlugin();
register_activation_hook( __file__, array($MyPluginCode, 'activate') );

// Using a filter instead of an action to create the rewrite rules.
// Write rules -> Add query vars -> Recalculate rewrite rules
add_filter('rewrite_rules_array', array($MyPluginCode, 'create_rewrite_rules'));
add_filter('query_vars',array($MyPluginCode, 'add_query_vars'));

// Recalculates rewrite rules during admin init to save resourcees.
// Could probably run it once as long as it isn't going to change or check the
// $wp_rewrite rules to see if it's active.
add_filter('admin_init', array($MyPluginCode, 'flush_rewrite_rules'));
add_action( 'template_redirect', array($MyPluginCode, 'template_redirect_intercept') );

我已经评论了重要的部分，但我所做的基本上是将您的钩子移到 use_filter 而不是 add_action.我还将过滤器按照它们在 Wordpress 中实际使用的顺序移动.似乎是当时要做的事情.

I've commented the important parts, but what I did was basically to move your hooks over to use_filter rather than add_action. I also moved the filters into the order that they are actually used in Wordpress. Seemed the thing to do at the time.

最后，确保您的永久链接设置为使用漂亮的 URL.我遇到了一个问题，我的设置为默认值，这使得 Wordpress 忽略了它原本需要解析的任何重写条件.更改为一些漂亮的 URL，您的条件将刷新.

Finally, make sure that your permalinks are set to use pretty URLs. I had an issue where mine were set to default, which makes Wordpress ignore any rewrite conditions that it would otherwise need to parse. Change over to some pretty URLs and your conditions will refresh.

让我知道这是否适合您.希望有所帮助.

Let me know if that works for you. Hope that helps.

谢谢，乔

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