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This issue arrises because of a couple of problems: 1) WP_List_Table::search_box() inserts the default _wpnonce and _wp_http_referer fields by using wp_nonce_field() without giving you the ability to override and say "I've already go a nonce field thanks". 2) You need to use GET as your method of form submission when subclassing WP_List_Table because ...


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I did same error first time I implemented WP_List_Table. The problem is that when you call WP_List_Table::display() WordPress in turn calls: WP_List_Table::display_rows_or_placeholder() WP_List_Table::display_rows() WP_List_Table::single_row() WP_List_Table::single_row_columns() Last function is called for every row. If you look at its code (see ...


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Now at home, I actually ran your code. I got this: Fatal error: Call to undefined function convert_to_screen() in .../wp-admin/includes/class-wp-list-table.php on line 88 Note: Please turn on Debugging_in_WordPress when developing. Anyway this lead me to the following question on Stackoverflow: Wordpress WP List Table Implemantation ...



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