def write(title, body):
    """
    * Write a new revision (title and body) to the database.
    * If there was a problem, return error message.
    """
    try:
        db = get_db()
        db.execute(
            "INSERT INTO pages (revision, title, body) VALUES (?, ?, ?)",
            (datetime.now().isoformat(), title, body)
        )
        db.commit()
    except Exception as err:
        current_app.logger.critical(f"Error saving page {title}: {err}")
        return "Unable to save page"