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I'm looking for a way to expand e customize more this topic

how to filter post listing (in WP dashboard posts listing) using a custom field (search functionnality)?

I've a custom post type in the dashboard i've managed to have a small search box with a fixed search function to search a specific meta key. The things is that the search form appears on all the /edit.php pages while i need it only in the specific custom post type edit.php page.

I tried with

if (isset($_GET['post_type']) && $_GET['post_type'] == 'product')

but it doesn't seem to work.

share|improve this question
Welcome to WPSE Martino, could you add some code to show us how you added the search box? Cheers! – Stephen Harris Mar 12 '12 at 11:05
Actually, it's obvious you are following the method in the linked question :D. See posted answer... – Stephen Harris Mar 12 '12 at 11:10
up vote 1 down vote accepted

I'm assuming you've used the method in the question linked to and are using the restrict_manage_posts filter.

 add_action( 'restrict_manage_posts', 'my_search_box' );
 function my_search_box() {
     // only add search box on desired custom post_type listings
     global $typenow;
     if ($typenow == 'product') {
       //On custom post type 'product' admin page.
       //Add code for search box here
share|improve this answer
Wow, that was fast. It works, I hacked it a little more to filter it only by a specific meta_key. Could be useful to post the whole code, but I don't know how, I'm new here and the comment section is too small. pastebin.com/A3kSD57v – molokom Mar 12 '12 at 11:26
No problem! Please remember to mark correct answers by ticking them though :D – Stephen Harris Mar 12 '12 at 11:30

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