I'm working on generating links for 7XX linking fields in XSLT, a-la Bug 15140 - Add MARC21 776 to OPAC and staff display ( https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=15140). This Takes the 773$w, and uses the XSLT template 'extractControlNumber' which strips the leading MARCOrgCode, e.g. turning (OCoLC)2776588 into 2776588 ... and then the search URL is /cgi-bin/koha/opac-search.pl?q=Control-number:2776588 The problem is that 2776588 isn't the actual OCLC number -- The formatting rules are here: https://help.oclc.org/Metadata_Services/OCLC-MARC_records/Content_designator... In short: 0-8 digits: 0 pad to 8 digits, prepend 'ocm': 2776588 -> ocm02776588 9 digits, prepend 'ocn'
9 digits, prepend 'on'
I tried formatting the search with a leading '*': /cgi-bin/koha/opac-search.pl?q=Control-number:*2776588 as well as with leading and trailing '*' /cgi-bin/koha/opac-search.pl?q=Control-number:*2776588* Neither of these worked. Formatting the control number according to the OCLC rules above did work: /cgi-bin/koha/opac-search.pl?q=Control-number:ocm02776588 So I have three questions: 1) Is there a way to format a Control-number search that doesn't force me to generate the control number according to the OCLC rules above? 2) If not, does anyone have pointers about how to * Test for (OCoLC) -> * Test length of control number * < 9 -> 0 pad to 8 digits, prepend 'ocm' * 9 -> prepend 'ocn' * > 9 -> prepen 'on' 3) Are there other control number formatting rules for other MARCOrgCodes?