IMHO, the best approach is either to fork the Plugin to maintain your changes, or else submit patches to the Plugin developer, to have your changes made a part of the original Plugin. Creating a “Child Plugin” really isn’t easy. The “Child Theme” concept really applies to the template files that get used, moreso than … Read more
When you visit a frontend page, WordPress will query the database and if your page does not exist in the database, that query is not needed and is just a waste of resources. Luckily, WordPress offers a way to handle frontend requests in a custom way. That is done thanks to the ‘do_parse_request’ filter. Returning … Read more
Really no easy way to do what you are wanting to do, but what I would do is make a snapshot of your site, implement yoru changes and if anything brakes restore and try again. It might be down for an hour, but I just recently did this when I somehow bricked a site I … Read more
Most of the following can be found in the Codex: apply_filters The callback functions attached to filter hook $tag are invoked by calling this function. This function can be used to create a new filter hook by simply calling this function with the name of the new hook specified using the $tag parameter. $value = … Read more
The easiest way would be using get_post_field(): $post_author_id = get_post_field( ‘post_author’, $post_id ); For more details on this issue: have a look at this StackOverflow answer.
The problem can partially be addressed with a must-use plugin hooking into the plugins_url filter. It won’t handle all other cases where plugin_basename() is used, such as register_activation_hook() and co. More info: http://core.trac.wordpress.org/ticket/16953
TL;DR; Enqueue Using external stylesheet PRO: All your styles are in one spot. PRO: Reduces web page coding. PRO: Easier to maintain the plugin. PRO: Can use hooks to alter location of the file. PRO: Can use hooks to unqueue the file. PRO: Can use minify styles automatically. CON: Might add extra HTTP request (can … Read more
The API you offer in a plugin or a theme depends on the logic of that specific code. There is probably no guide that applies to all situations. I am a contributor for multiple plugins with APIs, and what I have learned so far is: Do not offer an API until you really know how … Read more
Thanks to @toscho for the useful answer, but it felt a bit hackish to me, so I poked around a bit and figured out I could add a filter instead: function wpa18013_add_pages_to_dropdown( $pages, $r ){ if(‘page_on_front’ == $r[‘name’]){ $args = array( ‘post_type’ => ‘stack’ ); $stacks = get_posts($args); $pages = array_merge($pages, $stacks); } return $pages; … Read more
This filter allows you to extend the map_meta_cap() function. This function is called by WP_User->has_cap() to convert a meta capability to one or more primitive capabilities. For example, you want to know whether the current user should be allowed to edit the current post, the edit_post meta capability. This depends on some factors: is the … Read more