qsearchs('tower_sector', { sectornum => $self->sectornum });
}
+=item tower_sector_sql HASHREF
+
+Class method which returns a list of WHERE clause fragments to
+search for services with tower/sector given by HASHREF. Can
+contain 'towernum' and 'sectornum' keys, either of which can be
+an arrayref or a single value. To use this, the search needs to
+join to tower_sector.
+
+towernum or sectornum can also contain 'none' to allow null values.
+
+=cut
+
+sub tower_sector_sql {
+ my( $class, $params ) = @_;
+ return () unless keys %$params;
+
+ my @where = ();
+ for my $field (qw(towernum sectornum)) {
+ my $value = $params->{$field} or next;
+ if ( ref $value and grep { $_ } @$value ) {
+ my $in = join(',', map { /^(\d+)$/ ? $1 : () } @$value);
+ my @orwhere;
+ push @orwhere, "tower_sector.$field IN ($in)" if $in;
+ if ( grep /^none$/, @$value ) {
+ # then allow this field to be null
+ push @orwhere, "tower_sector.$field IS NULL";
+ # and if this field is the sector, also allow the default sector
+ # on the tower
+ push @orwhere, "sectorname = '_default'" if $field eq 'sectornum';
+ }
+ push @where, '( '.join(' OR ', @orwhere).' )';
+ }
+ elsif ( $value =~ /^(\d+)$/ ) {
+ push @where, "tower_sector.$field = $1";
+ }
+ elsif ( $value eq 'none' ) {
+ push @where, "tower_sector.$field IS NULL";
+ }
+ }
+ @where;
+}
+
1;