I see this never got answered. I have the same problem – tried the same thing, echoing some debug code in the save_post callback and it only shows on New post (presumably when the first autodraft is saved, or the database entry created for the new post). Ever find a solution?
Probably to late, but the answer should help others if not you guys.
I’ve had the same problem with save_post not getting called. Although the programming looks as if save_post should be called on an update of a post, something’s probably hooking in and redirecting the logic.
You can use ‘edit_post’ AS WELL as ‘save_post’, here’s the code example:
do_action(‘edit_post’, $post_ID, $post);
Thanks Jon, not late at all 🙂
Hmm, I tried edit_post too and nothing seemed to happen at all but I will look into that again. I think my concern with edit_post was that this action is hooked when comments are made too. Because I am using save_post (or not, as is the case currently) to save POSTed meta_box data on the edit post/page I definitely don’t want that happening when a user makes a comment – I would have to do additional checks to make sure we are on an edit post/page screen, not even sure how to do that right now.
OK, thanks, will look into edit_post again and see if there are any reasons why it might not be working.
BTW, what’s with those parameters? Would it be the same for add_action?
I was doing:
add_action (edit_post, array(&$mypluginclassinstance, 'mycallback'));
Something seems to be out-of-date in the docs about that…
I’m also having similar issues, had written some simple code like your self as I suspected these were not firing. I have tried.
//save_post only fires when you create a new post NOT the first save / publish
add_action('save_post', 'save_postdata');
// never seems to fire
add_action('edit_post', 'edit_postdata');
//never seems to fire
add_action('publish_post', 'publish_postdata');
// fires after save_post above
add_action('wp_insert_post', 'insert_postdata');
I have written some custom write panels for my client as detailed in http://wefunction.com/2008/10/tutorial-creating-custom-write-panels-in-wordpress/ but can’t get them to save 🙁
Any ideas
Rob
Well, I got things working finally – I had to pry into the code of another plugin (All-In-One SEO) to see how they had done it, and this was what worked for me:
add_action('edit_post', array ( $dl_myplugin, 'myplugin_save'));
add_action('save_post', array ( $dl_myplugin, 'myplugin_save'));
add_action('publish_post', array ( $dl_myplugin, 'myplugin_save'));
add_action('edit_page_form', array ( $dl_myplugin, 'myplugin_save'));
My needs were simpler – to save the meta_box data regardless of whether the post is being published, saved, autosaved, or whatever. This seems a bit spray-and-pray, as I am not really sure which hook is being activated here but I guess I covered all eventualities! Hope this helps!
P.S. This edit_page_form isn’t documented in the Codex other than a single line here http://codex.wordpress.org/Plugin_API/Action_Reference where it says:
Runs just before the “advanced” section of the page editing form in the admin menus.
and I have not yet tested whether I need edit_form_advanced too, since this says:
Runs just before the “advanced” section of the post editing form in the admin menus
I.e. the first is for pages, the second is for posts – I need it working on both, will look into that once I have got my code working on the page edit form – one thing at a time!
THANKS !!! edit_page_form is the only hook that gets called when I save a page. Now I can get on with the real code 🙂
Great! I am glad we got this fixed between us! But it does show that the add_meta_box function reference is out of date since it only mentions save_post there. Not sure at what point these actions got split up (I am guessing that’s what happened?) but other plugin authors seemed to figure it out, not sure how!
I have not tried the workarounds that markowe suggested. But for the time being I have switched to “WPAlchemy” (http://www.farinspace.com/wpalchemy-metabox/).
Also if you see code for “WPAlchemy” you will notice that it works perfectly fine with just “save_post” and nothing more. (So there is some magic which we are not aware of)
I’m having a similar issue. Save_Post seems to only be called when I’m publishing a post or updating a previously published post. If I’m in draft mode and click Save, it’s doesn’t seem to be calling it.
http://wordpress.org/support/topic/metabox-saves-on-update-or-publish-but-not-on-saving-draft?replies=1
I think i found the “problem”.
the “save_post” action is only called when we actually changed something in the post page form. If we just press the update button, without changing anything, the “save_post” action is not called.
This is important if we are editing a custom post type where we had custom meta boxes. If we rely on the “save_post” action and only change stuff on our custom meta boxes, nothing will happen.
The solution is to use the “pre_post_update” action hook, instead of “save_post”.
