How to lock a post or page

2 comments

1. You can use the 'wp_insert_post_data' filter to set the data being updated to the ones post has right now:

   add_filter('wp_insert_post_data', 'prevent_post_edit', 99, 2);
   
   prevent_post_edit ($data, $postarr) {
     if ( ! isset($postarr['ID']) || empty($postarr['ID']) ) return $data;
     if ( current_user_can('edit_files') ) return $data; // admin can edit posts
     // prevent the update only for post and pages, change this according to tour needs
     $prevent_types = array('post', 'page');
     if ( ! in_array($data['post_type'], $prevent_types) ) return data;
     // get the post how is before the update
     $old = get_post($postarr[ID]);
     return get_object_vars($old);
   }
   

2. Try Role Scoper plugin.

   Users of any level can be elevated to read or edit content of your
   choice. Restricted content can be withheld from users lacking a
   content-specific role, regardless of their WP role.

   Edit: Also there is Members Plugin that has content-level pemissions.

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