'GET /api/groups/{encoded_group_id}/users/{encoded_user_id}
Displays information about a group user.'

@web.expose_api
@web.require_admin
def show(self, trans, id, group_id, **kwd):

    user_id = id
    decoded_group_id = trans.security.decode_id(group_id)
    decoded_user_id = trans.security.decode_id(user_id)
    item = None
    try:
        group = trans.sa_session.query(trans.app.model.Group).get(decoded_group_id)
        user = trans.sa_session.query(trans.app.model.User).get(decoded_user_id)
        for uga in group.users:
            if (uga.user == user):
                item = dict(id=user_id, email=user.email, url=url_for('group_user', group_id=group_id, id=user_id))
        if (not item):
            item = ('user    %s    not    in    group    %s' % (user.email, group.name))
    except Exception as e:
        item = ('Error    in    group_user    API    group    %s    user    %s' % (group.name, user.email))
        log.error((item + (':    %s' % str(e))))
    return item
