@@ -, +, @@ --- C4/Serials.pm | 24 ++++++++++++------------ t/db_dependent/Serials/GetFictiveIssueNumber.t | 4 ++-- 2 files changed, 14 insertions(+), 14 deletions(-) --- a/C4/Serials.pm +++ a/C4/Serials.pm @@ -2270,6 +2270,8 @@ depending on how many rows are in serial table. The issue number calculation is based on subscription frequency, first acquisition date, and $publisheddate. +Returns undef when called for irregular frequencies. + The routine is used to skip irregularities when calculating the next issue date (in GetNextDate) or the next issue number (in GetNextSeq). @@ -2280,26 +2282,24 @@ sub GetFictiveIssueNumber { my $frequency = GetSubscriptionFrequency($subscription->{'periodicity'}); my $unit = $frequency->{unit} ? lc $frequency->{'unit'} : undef; - my $issueno = 0; + return if !$unit; + my $issueno; - if($unit) { - my ($year, $month, $day) = split /-/, $publisheddate; - my ($fa_year, $fa_month, $fa_day) = split /-/, $subscription->{'firstacquidate'}; - my $wkno; - my $delta = _delta_units( [$fa_year, $fa_month, $fa_day], [$year, $month, $day], $unit ); + my ( $year, $month, $day ) = split /-/, $publisheddate; + my ( $fa_year, $fa_month, $fa_day ) = split /-/, $subscription->{'firstacquidate'}; + my $delta = _delta_units( [$fa_year, $fa_month, $fa_day], [$year, $month, $day], $unit ); - if($frequency->{'unitsperissue'} == 1) { - $issueno = $delta * $frequency->{'issuesperunit'} + $subscription->{'countissuesperunit'}; - } else { - # Assuming issuesperunit == 1 - $issueno = int( ($delta + $frequency->{'unitsperissue'}) / $frequency->{'unitsperissue'} ); - } + if( $frequency->{'unitsperissue'} == 1 ) { + $issueno = $delta * $frequency->{'issuesperunit'} + $subscription->{'countissuesperunit'}; + } else { # issuesperunit == 1 + $issueno = 1 + int( $delta / $frequency->{'unitsperissue'} ); } return $issueno; } sub _delta_units { my ( $date1, $date2, $unit ) = @_; + # date1 and date2 are array refs in the form [ yy, mm, dd ] if( $unit eq 'day' ) { return Delta_Days( @$date1, @$date2 ); --- a/t/db_dependent/Serials/GetFictiveIssueNumber.t +++ a/t/db_dependent/Serials/GetFictiveIssueNumber.t @@ -27,8 +27,8 @@ subtest 'Tests for irregular frequency' => sub { periodicity => $freq_irr, firstacquidate => '1972-02-07', }; - is( C4::Serials::GetFictiveIssueNumber($subscription, '1972-12-31'), 0, 'Irregular: should be zero' ); - is( C4::Serials::GetFictiveIssueNumber($subscription, '1973-12-31'), 0, 'Irregular: still zero' ); + is( C4::Serials::GetFictiveIssueNumber($subscription, '1972-12-31'), undef, 'Irregular: should be undef' ); + is( C4::Serials::GetFictiveIssueNumber($subscription, '1973-12-31'), undef, 'Irregular: still undef' ); }; subtest 'Tests for yearly frequencies' => sub { --