[Koha-devel] RFC Adding column to biblio for Remainder Of Title

[Galen Charlton]

Hi,

On Tue, Dec 16, 2008 at 5:27 PM, Michael Hafen <mdhafen at tech.washk12.org> wrote:
> Also it looks to me like the OPAC xslt will only show item availability
> for the first branch that has an item.  Maybe I'm understanding the xslt
> wrong, but looking at a search result in the OPAC it seems this is true.
>
> I'm looking at this bit in the OPAC stylesheet for MARC21:
>                       <xsl:variable name="available_items"
>                           select="key('item-by-status', 'available')"/>
>                       <xsl:for-each
> select="$available_items[generate-id() =
> generate-id(key('item-by-status-and-branch', concat(items:status, ' ',
> items:homebranch))[1])]">
> : I don't see how that will grab more that just the first homebranch.

That clause really does scan all of the available items and counts the
number of available items for each home branch.   It uses the
Muenchian method to do the grouping; see
http://www.jenitennison.com/xslt/grouping/muenchian.html for an
explanation of the general technique.  In this case, the XSLT is:

[1] Putting a list of all available item nodes into the
$available_items variable by doing a lookup on the item-by-status key,
which is defined in line 10 of the stylesheet:

<xsl:key name="item-by-status" match="items:item" use="items:status"/>

[2] Selecting each node in $available_items that is the first
available item for each homebranch; this uses the
item-by-status-and-branch key.

[3] Emitting the homebranch and a count of available items in that
homebranch, again using the item-by-status-and-branhc key.

> I would very much welcome any suggestions on getting item call numbers
> into the xslt.  I'd also welcome comments on the item availability
> thing.

You can get the item call numbers in one of two ways:

[1] Update the XSLT to grab it from the 952$o, assuming you're using
the default MARC21 frameworks.

[2] Change C4::XSLT::buildKohaItemsNamespace() to include
itemcallnumber in the item XML, then adjust the XSL to use it.

Regards,

Galen
-- 
Galen Charlton
VP, Research & Development, LibLime
galen.charlton at liblime.com
p: 1-888-564-2457 x709
skype: gmcharlt