[Koha-bugs] [Bug 23925] New: Value builder plugin to check ISBN validity

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=23925

            Bug ID: 23925
           Summary: Value builder plugin to check ISBN validity
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Cataloging
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: pasi.kallinen at koha-suomi.fi
        QA Contact: testopia at bugs.koha-community.org
                CC: m.de.rooy at rijksmuseum.nl

This patch adds a new value builder plugin ISBN.pl, which should
be attached to field 020a. The plugin will perform a simple
checksum checking when trying to save the record, and inform the
user that the ISBN is illegal if the checksum doesn't match.

The ISBN plugin is a test case for additional value builder plugin
functionality that lets the plugins check field values and
prevent saving if so desired. The example plugin has been updated
with information on how to write a pre-save check function.

To test:
1) Add the ISBN.pl plugin to the field 020a in MARC subfield
   structure admin.
2) Go to cataloguing and try to save the record, no complaints
   about the ISBN (Because the plugin will not complain about
   empty field)
3) Enter something in the 020a field and try to save, you should
   receive a complaint about illegal ISBN.
4) Enter a valid ISBN (eg. 978-951-1-27641-8) and try to save,
   there should be no complaints about the ISBN.

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