How do I improve this admin query snippet to avoid generating duplicate results on non-meta searches?
I’ve been playing around with code snippets which add meta data to admin searches.
plugin-development
Problems with autoloading classes via sp_autoload_register / maybe interfering WP-specific autoloader
I’m working on a plugin in which I do the following for autoloading classes:
How to add a new plugin page under desired Options page?
Using WordPress Settings API tutorial I created a new custom menu and corresponding sub menus. Each of my menus have a page of its own. I used add_menu_page() and add_submenu_page() for that. (Here is the Complete Code)
How to auto-upgrade my plugin?
How do I have my plugin pop up with that New version available. Upgrade Automatically dialog to appear when my plugin has a new version? Specifically for plugins not hosted on the WP.org repository.
Creating a custom public user page
I’d like to develop a plugin that allows me to have custom user pages. I really like the way the author archive template handles the URL: /author/username. I don’t want to rewrite the author_base as I’d like to keep that functionality in place untouched.
URLs of plugin resources?
I am trying to add in a script and css file for my plugin into the admin header.
Where to put third party PHP library?
I’m developing a couple of open-source plugins and a theme (all part of a “suite”) that all use the same third party PHP library. I’m wondering what is the best way to include it in WordPress. Here are some thoughts:
Front-End Form Submission in Shortcode
The plugin I am working on contains shortcodes with forms on them. Upon form submission (POST), I do some database work, and then planned on redirecting to another page after the db work is complete. When I attempt this, I get the “Headers Already Sent” warning. Within the shortcode function, how do I call my redirect sooner than get_headers? Do I need to use some separate callback function?
is_plugin_active function doesn’t exist
I’m using WordPress 3.0.5 and have tested with 3.1rc4. In the main PHP file of my plugin, when I try to call is_plugin_active I get Call to undefined function is_plugin_active(). I can call add_action and add_filter. What should I check/change to fix this?
How do I log plugin (cron) actions?
Is there a recommended way to log (failed) cron actions from your plugin? For example, I have a plugin that synchronizes with an external service every hour. I want to log how much was changed, but also when the synchronization failed. What would you recommend here? A new database table? The Log Deprecated Notices plugin does this with a custom post type, but this might be too much overhead? I believe WordPress does not come with a standard logging package?