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@lavoiesl
Last active June 15, 2022 17:03
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MU plugins subdirectory loader. Enables the loading of plugins sitting in mu-plugins (as folders)
<?php
/**
* Plugin Name: MU plugins subdirectory loader
* Plugin URI: https://gist.github.com/lavoiesl/6302907
* Description: Enables the loading of plugins sitting in mu-plugins (as folders)
* Version: 0.1
* Author: github@lavoie.sl
* Author URI: http://blog.lavoie.sl/
*
* Will clear cache when visiting the plugin page in /wp-admin/.
* Will also clear cache if a previously detected mu-plugin was deleted.
* Sadly, get_mu_plugins does not have any hooks.
*
* @file wp-content/mu-plugins/subdirectory_loader.php
* @link http://blog.lavoie.sl/2013/08/wordpress-mu-plugins-subdirectory-loader.html
*/
function sub_mu_plugins_files()
{
// Cache plugins
$plugins = get_site_transient('sub_mu_plugins');
if ($plugins !== false) {
// Validate plugins still exist
// If not, invalidate cache
foreach ($plugins as $plugin_file) {
if (!is_readable(WPMU_PLUGIN_DIR . '/' . $plugin_file)) {
$plugins = false;
break;
}
}
}
if ($plugins === false) {
echo 'loading';
if (!function_exists('get_plugins')) {
// get_plugins is not included by default
require ABSPATH . 'wp-admin/includes/plugin.php';
}
// Invalid cache
$plugins = array();
foreach (get_plugins('/../mu-plugins') as $plugin_file => $data) {
if (dirname($plugin_file) != '.') { // skip files directly at root
$plugins[] = $plugin_file;
}
}
set_site_transient('sub_mu_plugins', $plugins);
}
return $plugins;
}
add_action('muplugins_loaded', function(){
if (isset($_SERVER['REQUEST_URI']) && strpos($_SERVER['REQUEST_URI'], '/wp-admin/plugins.php') !== false) {
// delete cache when viewing plugins page in /wp-admin/
delete_site_transient('sub_mu_plugins');
}
foreach (sub_mu_plugins_files() as $plugin_file) {
require WPMU_PLUGIN_DIR . '/' . $plugin_file;
}
});
/**
* Add rows for each subplugin under this plugin when listing mu-plugins in wp-admin
*/
add_action('admin_init', function() {
add_action('after_plugin_row_subdirectory_loader.php', function() {
foreach (sub_mu_plugins_files() as $plugin_file) {
// Strip down version of WP_Plugins_List_Table
$data = get_plugin_data(WPMU_PLUGIN_DIR . '/' . $plugin_file);
$name = empty($data['Plugin Name']) ? $plugin_file : $data['Plugin Name'];
$desc = empty($data['Description']) ? '&nbsp;' : $data['Description'];
$id = sanitize_title($name);
echo <<<HTML
<tr id="$id" class="active">
<th scope="row" class="check-column"></th>
<td class="plugin-title"><strong style="padding-left: 10px;">+&nbsp;&nbsp;$name</strong></td>
<td class="column-description desc">
<div class="plugin-description"><p>$desc</p></div>
</td>
</tr>
HTML;
}
});
});
@cibulka
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cibulka commented Apr 28, 2014

Hello Sébastien, thanks for the awesome script! I am planning to use this A LOT.

However I have a slight problem with it - I would like to use your script as a dependency as well. That means that I need to put your script inside a folder and make it work from there.

I am fine with simple PHP script that would sit in the root of mu-plugins folder and require your plugin (every other plugin will be "autoloaded" by yours).

I tried to tweak your code to meet my requirement, but to be honest, I got a little lost in it (mainly due to my lack of knowledge about WP transients).

Would you be kind enough to guide me to some direction? Thanks in advance, P!

@lavoiesl
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