@@ -11,10 +11,10 @@ class admin_list_table extends WP_List_Table {

       'plural'   => 'Customers', //plural name of the listed records

       'ajax'     => false,       //should this table support ajax?

       'screen'   => null

-   ));

+    ));

   }

-  public static function get_customers($per_page = 5, $page_number = 1) {

+  public function get_customers($per_page = 5, $page_number = 1) {

     global $wpdb;

     $sql = "SELECT * FROM {$wpdb->prefix}customers";

@@ -32,17 +32,17 @@ class admin_list_table extends WP_List_Table {

     return $result;

   }

-  public static function delete_customer($id) {

+  public function delete_customer($id) {

     global $wpdb;

     $wpdb->delete(

       "{$wpdb->prefix}customers",

       array('ID' => $id),

       array('%d')

-   );

+    );

   }

-  public static function record_count() {

+  public function record_count() {

     global $wpdb;

     $sql = "SELECT COUNT(*) FROM {$wpdb->prefix}customers";

@@ -62,7 +62,7 @@ class admin_list_table extends WP_List_Table {

   function column_cb($item) {

     return sprintf(

       '<input type="checkbox" name="bulk-delete[]" value="%s" />', $item['ID']

-   );

+    );

   }

   function column_name($item) {

@@ -84,7 +84,7 @@ class admin_list_table extends WP_List_Table {

       'name'    => 'Name',

       'address' => 'Address',

       'city'    => 'City'

-   );

+    );

     return $columns;

   }

@@ -93,7 +93,7 @@ class admin_list_table extends WP_List_Table {

     $sortable_columns = array(

       'name' => array('name', true),

       'city' => array('city', true)

-   );

+    );

     return $sortable_columns;

   }

@@ -107,21 +107,39 @@ class admin_list_table extends WP_List_Table {

   public function prepare_items() {

     $this->_column_headers = $this->get_column_info();

-    /** Process bulk action */

     $this->process_bulk_action();

     $per_page     = $this->get_items_per_page('customers_per_page', 5);

     $current_page = $this->get_pagenum();

-    $total_items  = self::record_count();

+    $total_items  = $this->record_count();

     $this->set_pagination_args(array(

       'total_items' => $total_items, //WE have to calculate the total number of items

       'per_page'    => $per_page //WE have to determine how many items to show on a page

     ));

-    $this->items = self::get_customers($per_page, $current_page);

+    $this->items = $this->get_customers($per_page, $current_page);

   }

   public function process_bulk_action() {

+    if ('delete' === $this->current_action()) {

+      $nonce = esc_attr($_REQUEST['_wpnonce']);

+

+      if (! wp_verify_nonce($nonce, 'delete_customer')) {

+        die('Go get a life script kiddies');

+      }

+      else {

+        $this->delete_customer(absint($_GET['customer']));

+      }

+    }

+

+    if ((isset($_POST['action']) && $_POST['action'] == 'bulk-delete')

+      || (isset($_POST['action2']) && $_POST['action2'] == 'bulk-delete')) {

+      $delete_ids = esc_sql($_POST['bulk-delete']);

+

+      foreach ($delete_ids as $id) {

+        $this->delete_customer($id);

+      }

+    }

   }

 }