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I'm doing some custom coding and creating a new page template to use for a new page within Wordpress. I'm trying to add a meta box to the page to be displayed as output to the user. I tried to do the following in my page template:

add_meta_box( 'submitdiv', __( 'Publish' ), 'post_submit_meta_box', null, 'side', 'core' );

When I go to the URL to display the new page I created I get the following error message: Fatal error: Call to undefined function get_current_screen() in D:\My Documents\xampp_new\xampp\htdocs\bmt\wp-admin\includes\template.php on line 921

How can I add meta boxes to be displayed to an end user?

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  • I want to say that Metaboxes were designed for admin-panel / backend use only but maybe somebody here has a solution for you.
    – Howdy_McGee ♦
    Commented Jan 13, 2015 at 19:41
  • @Howdy_McGee No, you're right, meta boxes were designed for the admin area of the site. You'd display the post meta info that you save using a meta box, on the front end.
    – darrinb
    Commented Jan 13, 2015 at 22:07

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By default WordPress doesn't load admin classes/function definitions in the front end of the site. You need to explicitly require the files.

As far as I remember requiring wp-admin/includes/admin.php would get you most of typical stuff.

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  • I got rid of the original error by including this file. I did however get another one. I'm still using this code: add_meta_box( 'submitdiv', __( 'Publish' ), 'post_submit_meta_box', null, 'side', 'core' ); The error message I'm getting now is: Warning: array_keys() expects parameter 1 to be array, null given in D:\My Documents\xampp_new\xampp\htdocs\bmt\wp-admin\includes\plugin.php on line 1676 Warning: Invalid argument supplied for foreach() in D:\My Documents\xampp_new\xampp\htdocs\bmt\wp-admin\includes\plugin.php on line 1676
    – user1048676
    Commented Jan 14, 2015 at 15:37
  • Actually only including that file on my page creates that warning.
    – user1048676
    Commented Jan 14, 2015 at 15:44
  • It's hard to tell because there is no loop at that line in current WP version (4.1).
    – Rarst
    Commented Jan 14, 2015 at 15:50
  • Ok, I guess I'll just have to code this portion by myself. Thanks.
    – user1048676
    Commented Jan 14, 2015 at 16:47

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