[Koha] Downgrade koha database from 3.16.x to 3.14.x

[Dibyendra Hyoju]

Thanks both of you for your response! I will postpone the idea of
downgrading the database for a while.

Zeno, I'll take a look at code to find out the exact problem, but
looking at the snippet code in the email, this could be because of
malformed ISBN, I guess.

I will write to the list, if I come up with solutions.

Thanks!
--
Dibyendra

On 10/4/14, Zeno Tajoli <z.tajoli at cineca.it> wrote:
> Hi,
>
>
>>(http://permalink.gmane.org/gmane.comp.misc.koha/36671) mentioned
>>earlier in the Koha general mailing list, I am thinking to downgrade
>>the database structure of Koha 3.16.4 to 3.14.x.
>
> I suggest you to not do this operation,
> the error is inside this code:
>
>  Software error:
>> Can't call method "as_string" on an undefined value at
>> /usr/share/koha/lib/C4/Koha.pm line 1608.
>
> 1586
> 1587 sub NormalizeISBN {
> 1588     my ($params) = @_;
> 1589
> 1590     my $string        = $params->{isbn};
> 1591     my $strip_hyphens = $params->{strip_hyphens};
> 1592     my $format        = $params->{format};
> 1593
> 1594     return unless $string;
> 1595
> 1596     my $isbn = Business::ISBN->new($string);
> 1597
> 1598     if ( $isbn && $isbn->is_valid() ) {
> 1599
> 1600         if ( $format eq 'ISBN-10' ) {
> 1601             $isbn = $isbn->as_isbn10();
> 1602         }
> 1603         elsif ( $format eq 'ISBN-13' ) {
> 1604             $isbn = $isbn->as_isbn13();
> 1605         }
> 1606
> 1607         if ($strip_hyphens) {
> 1608             $string = $isbn->as_string( [] );
> 1609         } else {
> 1610             $string = $isbn->as_string();
> 1611         }
> 1612
> 1613         return $string;
> 1614     }
> 1615 }
>
>
> Probably you have an 020 tag without data or same other problem.
> To understand better the situation you can try:
> -- find a search on opac that gives the error
> -- insert the swith -d in the opac-search.pl
> -- start opac-search.pl on command line and use
>    perl debugger to find the exact problem
>
> Bye
>
>
>
>
>


-- 
Dibyendra Hyoju