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The "manage categories" screen has two interfaces, one when you first click on "Categories" which is used to add a new category and another once you click on an existing category to edit it.

I've added some custom fields to the Category editor, but I only want them to be present on the edit screen, not the "add" screen.

However $pagenow in both cases, is the same (edit-tags.php). The only difference I can see is that when editing, the action=edit token appears on the querystring.

Should I simply wrap my "edit_category_form" filter in a test for the existence of that token or is there a better way?

PS: I'd be fine with leaving the fields on the add screen, however, it appears that the save is ajaxed, and none of my custom fields are being saved in that routine.

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up vote 0 down vote accepted

You can target edit-tags.php page and additionally check for that edit action.

add_action( 'admin_head-edit-tags.php', 'my_category_edit' );

function my_category_edit() {

    global $action, $taxonomy;

    if( 'edit' != $action || 'category' != $taxonomy )

    // code goes here
share|improve this answer
Sweet. Thanks for the all the help. Any idea on this one > wordpress.stackexchange.com/questions/6829/… – Scott B Jan 12 '11 at 21:18
@Scott B Did you notice I am basically stalking this site? :) No need to put it under my nose, if I have any ideas about solution (or get them later) I will answer... – Rarst Jan 12 '11 at 21:44
Point taken :) I'm at the end of the punch list and getting a bit antsy to put this one to bed. Always appreciate your help. – Scott B Jan 12 '11 at 22:10

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