Problem when using admin via SSL (and solution)

When using SSL to access the site admin, the browser will throw a “mixed content” error and won’t load some needed .js files (saving options won’t work, for example).

The problem occurs because the variable WP_PLUGIN_URL, used to enqueue the plugin’s scripts and styles, doesn’t honor the HTTPS protocol and always generate URLs with ‘http://’.

The solution is simple, though. On file simplyexclude.php at line 46, where it reads:

$this->plugindir_url = WP_PLUGIN_URL . "/". $plugindir_node;

Change it to:

$this->plugindir_url = plugins_url( $plugindir_node );

I’d like to note that this also solved the problem of missing content on my site’s home page, as reported by others in https://wordpress.org/support/topic/simply-exclude-plugin-preventing-blog-posts-from-displaying-on-blog-page?replies=7

Credits to Ipstenu for providing a solution at this post: https://wordpress.org/ideas/topic/wp_plugin_url-doesnt-take-ssl-into-account

https://wordpress.org/plugins/simply-exclude/