[Koha-bugs] [Bug 8615] New: XSLT on OPAC is broken for incomplete 6xx fields

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=8615

          Priority: P5 - low
 Change sponsored?: ---
            Bug ID: 8615
          Assignee: oleonard at myacpl.org
           Summary: XSLT on OPAC is broken for incomplete 6xx fields
          Severity: enhancement
    Classification: Unclassified
                OS: All
          Reporter: katrin.fischer at bsz-bw.de
          Hardware: All
            Status: NEW
           Version: master
         Component: OPAC
           Product: Koha

Created attachment 11521
  -->
http://bugs.koha-community.org/bugzilla3/attachment.cgi?id=11521&action=edit
screenshot

Currently the OPAC XSLT page is broken, when you data includes an 6xx field,
that includes no subfield that is marked for display (empty link).

I was testing with German data that includes 689 fields for transporting
"Schlagwortketten". 

To avoid the problem the XSLT should include a check for a displayable
subfields before creating the link. 

Example with problematic data:

  <datafield tag="689" ind1="1" ind2="0">
    <subfield code="A">c</subfield>
    <subfield code="0">(DE-588c)4542874-8</subfield>
    <subfield code="0">(DE-576)213479192</subfield>
    <subfield code="2">swd</subfield>
    <subfield code="a">Solesmes</subfield>
    <subfield code="b">Kloster</subfield>
  </datafield>
  <datafield tag="689" ind1="1" ind2="1">
    <subfield code="A">s</subfield>
    <subfield code="0">(DE-588c)4021952-5</subfield>
    <subfield code="0">(DE-576)20894091X</subfield>
    <subfield code="2">swd</subfield>
    <subfield code="a">Gregorianischer Gesang</subfield>
  </datafield>
  <datafield tag="689" ind1="1" ind2=" ">
    <subfield code="5">DE-576</subfield>
  </datafield>

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