Have you looked into Koha's guarantor functionality? http://manual.koha-community.org/3.18/en/administration.html (see borrowerRelationship) and http://manual.koha-community.org/3.18/en/patroninformation.html (section 9.2). It may get you what you want. 2015-02-18 15:56 GMT-07:00 Bob Ewart <bob-ewart@bobsown.com>:
We need a way to link family members together.
I can setup an additional attribute, Family, which could be repeated. The value would be the card number of one of the other members of the family.
Ideally it would be a valid card number, however limiting it to 4 or 5 digits would at least give a sanity check.
Authorized values are fixed constants. Having a way to specify a pattern would be very useful.
-- Bob Ewart
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