You have misspelled the filter name. There is an “s” lacking at the end. The correct is manage_cri_creator_posts_columns. As a suggestion, I’d say that it is better to manipulate the existing array rather than creating a complete new one. Might not be your case, but its a good idea to avoid conflicting with other plugins … Read more
wp_get_attachment_image_src(156, ‘archive_thumbnail’)[0] will only echo the URL of the image. You need to add it to html to display the image. Try this: echo ‘<img src=”‘.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[0].'”/>’; You could add the width etc as well echo ‘<img src=”‘.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[0].'” width=”.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[1].” height=”.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[2].” />’; what happens if someone deletes this image though? Do you have … Read more
Any image uploaded to a post in the post editor is “attached to” that post. Actually, you can only set an attached image as Featured Image (aka Post Thumbnail — not to be confused with “Thumbnails”), and it’s NOT vice-versa. If you do not want an image to be attached to a post, you can … Read more
Maybe this tutorial at wpengineer will help: WP_List_Table – a step by step guide: Bulk actions
I think you should rethink if creating a custom wp_list_table & stuff is the way to go. I can tell from experience wp_list_table isn’t fun to work with. Besides I think (as far as I can judge here) a custom post type (or multiple) would be the way to go for you. This way you … Read more
I’ve not found any best alternative to this class. The WP_List_table is best to use. But the way to use it, is the concern. If you read the Codex cafefully you’ll see a warning that- This class’s access is marked as private. That means it is not intended for use by plugin and theme developers … Read more
with add_query_arg the first paramater is required and it must be an array when it is alone : add_query_arg([]) more informations here : http://developer.wordpress.org/reference/functions/add_query_arg
The table of plugins on the plugins admin screen uses WP_Plugins_List_Table which extends the WP_List_Table class. And there are hooks which you can use to modify the table columns, content, etc. Here are some of the hooks, which are relevant in your case: plugin_row_meta — allows you to add custom meta/content at the bottom of … Read more
If WP_List_Table is working for you, then you can just make a copy of this class. And use that. In the WordPress codex, Also says: If you would still like to make use of the class, you should make a copy to use and distribute with your own project. You may define a new class … Read more
This, $_wp_column_headers[$screen->id]=$columns; …is deprecated long ago. Instead you need to assign your columns to the following class property on WP_List_Table, $this->_column_headers = array( $this->get_columns(), array(), //hidden columns if applicable $this->get_sortable_columns() );