Merge pull request #109 from Automattic/107/ms-drop-table

Remove the plugin's table when a subsite is deleted from a multisite

includes/class-events-store.php

@@ -37,6 +37,9 @@ class Events_Store extends Singleton {
 		add_action( 'wp_install', array( $this, 'create_table_during_install' ) );
 		add_action( 'wpmu_new_blog', array( $this, 'create_tables_during_multisite_install' ) );
 
+		// Remove table when a multisite subsite is deleted
+		add_filter( 'wpmu_drop_tables', array( $this, 'remove_multisite_table' ) );
+
 		// Enable plugin when conditions support it, otherwise limit errors as much as possible
 		if ( self::is_installed() ) {
 			// Option interception
@@ -211,6 +214,20 @@ class Events_Store extends Singleton {
 		$this->_prepare_table();
 	}
 
+	/**
+	 * When deleting a subsite from a multisite instance, include the plugin's table
+	 *
+	 * Core only drops its tables
+	 *
+	 * @param  array $tables_to_drop Array of prefixed table names to drop
+	 * @return array
+	 */
+	public function remove_multisite_table( $tables_to_drop ) {
+		$tables_to_drop[] = $this->get_table_name();
+
+		return $tables_to_drop;
+	}
+
 	/**
 	 * PLUGIN FUNCTIONALITY
 	 */