'Constructor
@param show_link: show representation as clickable link
@param fmt: string format template for person record'

def __init__(self, show_link=False, fmt=None):

    super(dvr_CaseActivityRepresent, self).__init__(lookup='dvr_case_activity', show_link=show_link)
    if fmt:
        self.fmt = fmt
    else:
        self.fmt = '%(first_name)s    %(last_name)s'
