[Koha] itemcallnumber

[Mike D.]

Part of my question is what does the itemcallnumber preference setting do
exactly?  I've read the section in the user's guide several times and it's still
not clear to me. 

Is it supposed to give you a default call number from another MARC field? Say I
have item.itemcallnumber linked to 952c now if I set the itemcallnumber
preference to 050a should it copy the contents of 050a to 952c as a default call
number to edit when adding an item?
OR
Is it used to tell the opac what the callnumber field is? So instead of
displaying/searching a call number using biblioitems.classification it uses
952c? This seems somewhat circular to me so I'm think it's the other one.

I think I might be visiting an old topic here but I didn't see any solution to
the thread in the archives. Regarding the thread "opac call number display
different in normal & marc views" from 2005-05-15, I am experiencing the same
issue where item level call numbers show in MARC view but not normal view. I
know VERY little about perl but I managed to figure out that if I change
/usr/local/koha/opac/htdocs/opac-tmpl/npl/en/opac-detail.tmpl at line 95 from
<td><!-- TMPL_VAR NAME="classification" --></td>
to
<td><!-- TMPL_VAR NAME="itemcallnumber" --></td>
it will display the proper item level call number.

Is this a really crude hack and am I likely to break something? I've noticed
several other areas of the NPL intranet interface where the Call Number is
inconsistent. Sometimes it uses biblioitems.classification and others it uses
item.itemnumber. Can these screens be fixed in a similar manner? Is there a
better way?

Thanks for your time,
Mike

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