def fill_person(self, person, fields):
        if 'real_name' in fields or 'birth_place' in fields\
            or 'death_date' in fields or 'nationality' in fields\
            or 'short_biography' in fields or 'roles' in fields\
            or 'birth_date' in fields or 'thumbnail_url' in fields\
            or 'biography' in fields\
                or 'gender' in fields or fields is None:
            per = self.get_person(person.id)
            person.real_name = per.real_name
            person.birth_date = per.birth_date
            person.death_date = per.death_date
            person.birth_place = per.birth_place
            person.gender = per.gender
            person.nationality = per.nationality
            person.short_biography = per.short_biography
            person.short_description = per.short_description
            person.roles = per.roles
            person.biography = per.biography
            person.thumbnail_url = per.thumbnail_url

        return person