get '/zwei' => sub {
	my $self = shift;
	my $nachname = $self->param( 'nachname' );
	my $sth = $dbh->prepare( "SELECT vorname, steuernummer FROM $table WHERE nachname == ?" );
	$sth->execute( $nachname );
	my @rows;
	while ( my $row = $sth->fetchrow_hashref ) {
		push @rows, { vorname => $row->{vorname}, nachname => $nachname, steuernummer => $row->{steuernummer} };
	}
	if ( not @rows ) {
		$self->redirect_to( 'eingabe' );
	} elsif ( @rows == 1 ) {
		$self->redirect_to( "/kontrolle?steuernummer=$rows[0]{steuernummer}" );
	} else {
		$self->stash( rows => \@rows );
		$self->render( 'zwei' );
	}
};