add view for followees in transit

			}

		);

	},

	# v41 -> v42

	# adds current followee checkins

	sub {

		my ($db) = @_;

		$db->query(

			qq{

				create view follows_in_transit as select

					r1.subject_id as follower_id, user_id as followee_id,

					users.name as followee_name,

					train_type, train_line, train_no, train_id,

					extract(epoch from checkin_time) as checkin_ts,

					extract(epoch from sched_departure) as sched_dep_ts,

					extract(epoch from real_departure) as real_dep_ts,

					checkin_station_id as dep_eva,

					dep_station.ds100 as dep_ds100,

					dep_station.name as dep_name,

					dep_station.lat as dep_lat,

					dep_station.lon as dep_lon,

					extract(epoch from checkout_time) as checkout_ts,

					extract(epoch from sched_arrival) as sched_arr_ts,

					extract(epoch from real_arrival) as real_arr_ts,

					checkout_station_id as arr_eva,

					arr_station.ds100 as arr_ds100,

					arr_station.name as arr_name,

					arr_station.lat as arr_lat,

					arr_station.lon as arr_lon,

					polyline_id,

					polylines.polyline as polyline,

					visibility,

					coalesce(visibility, users.public_level & 127) as effective_visibility,

					cancelled, route, messages, user_data,

					dep_platform, arr_platform, data

					from in_transit

					left join polylines on polylines.id = polyline_id

					left join users on users.id = user_id

					left join relations as r1 on r1.predicate = 1 and r1.object_id = user_id

					left join stations as dep_station on checkin_station_id = dep_station.eva

					left join stations as arr_station on checkout_station_id = arr_station.eva

					;

				update schema_version set version = 42;

		}

		);

	},

);

# TODO add 'hafas' column to in_transit (and maybe journeys? undo/redo needs something to work with...)

	return $ret;

}

sub get_timeline {

	my ( $self, %opt ) = @_;

	my $uid = $opt{uid};

	my $db  = $opt{db} // $self->{pg}->db;

	my $where = {

		follower_id          => $uid,

		effective_visibility => { '>=', 30 }

	};

	if ( $opt{short} ) {

		return $db->select(

			'follows_in_transit',

			[

				qw(followee_name train_type train_line train_no dep_eva dep_name arr_eva arr_name)

			],

			$where

		)->hashes->each;

	}

	my $res = $db->select( 'follows_in_transit', '*', $where );

	my $ret;

	if ( $opt{with_data} ) {

		return $res->expand->hashes->each;

	}

	else {

		return $res->hashes->each;

	}

}

sub get_all_active {

	my ( $self, %opt ) = @_;

	my $db = $opt{db} // $self->{pg}->db;