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An under-documented technique available to WordPress plugin developers that I use in Zensor is adding custom columns to the Manage Posts screen in the admin interface. A search on Google or the Codex turns up very little. The only references on the Codex are on the pages listing all Filters and Actions.

The action/filter that I’m talking about is the complementary pair manage_posts_columns and manage_posts_custom_column. Combined, they let a plugin developer add new columns or shift around/delete existing columns on the Manage Posts screen.

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I just released Version 1.0 of Manage Pages Custom Columns, a plugin for WordPress.

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I wanted to tie together my two recent posts on adding custom columns to the WordPress manage posts screen and the Manage Pages custom columns plugin I released. Below, I’ll extend the code from the first post to use the plugin announced in the second post to add a custom column or two to the Manage Pages screen.

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This is the most recent post my series on customizing the Manage Posts/Pages screen. The first couple posts dealt with adding custom columns to the Manage Posts and Manage Pages screens and this post will demonstrate how one can add custom filtering to the Manage Posts screen using the restrict_manage_posts action.

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Since the last post on Custom Filtering in the Manage Posts Screen, WordPress 2.5 has been released to the world. While the techniques discussed in that article are still valid, due to the big admin interface rewrite, the results don’t look as pretty as they could. In this post, I’ll discuss updating the code from the previous post so that it works and looks good through all modern WordPress versions.

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