woothemes / sensei

		die('');

	}

	public function lesson_update_grade_type() {

		//Add nonce security to the request

		if ( isset($_POST['lesson_update_grade_type_nonce']) ) {

			$nonce = esc_html( $_POST['lesson_update_grade_type_nonce'] );

		} // End If Statement

		if ( ! wp_verify_nonce( $nonce, 'lesson_update_grade_type_nonce' )

        || ! current_user_can( 'edit_lessons' ) ) {

			die('');

		} // End If Statement

		// Parse POST data

		$data = $_POST['data'];

		$quiz_data = array();

		parse_str($data, $quiz_data);

		update_post_meta( $quiz_data['quiz_id'], '_quiz_grade_type', $quiz_data['quiz_grade_type'] );

		die();

	}

	public function lesson_update_question_order() {

		// Add nonce security to the request

		die();

	}

	public function lesson_update_question_order_random() {

		//Add nonce security to the request

		if ( isset($_POST['lesson_update_question_order_random_nonce']) ) {

			$nonce = esc_html( $_POST['lesson_update_question_order_random_nonce'] );

		} // End If Statement

		if ( ! wp_verify_nonce( $nonce, 'lesson_update_question_order_random_nonce' )

            || ! current_user_can( 'edit_lessons' ) ) {

			die('');

		} // End If Statement

		// Parse POST data

		$data = $_POST['data'];

		$quiz_data = array();

		parse_str($data, $quiz_data);

		update_post_meta( $quiz_data['quiz_id'], '_random_question_order', $quiz_data['random_question_order'] );

		die();

	}

	/**

	 * lesson_save_course function.