 |
 |
You really just need to wrap the label in the xsl:text and the xsl:value of in an xsl:if that tests whether the value-of XPath returns a string. <dc:identifier><xsl:value-of select="doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='name']/doc:element/doc:field[@name='value']"/> <xsl:if test="string(doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='volume']/doc:element/doc:field[@name='value'])"> <xsl:text> Vol. </xsl:text><xsl:value-of select="doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='volume']/doc:element/doc:field[@name='value']"/> </xsl:if> <xsl:if test="string(doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='issue']/doc:element/doc:field[@name='value'])"> <xsl:text> Issue </xsl:text><xsl:value-of select="doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='issue']/doc:element/doc:field[@name='value']"/> </xsl:if> </dc:identifier> If there's no name at all, you'd want to wrap an xsl:if around the dc:identifier so that you suppress an empty dc:identifier element. On Tue, Jun 2, 2015 at 3:34 PM, Matt Sherman <[log in to unmask]> wrote: > Cool. I talked to Ron via phone so I am getting a better picture, but > I am still happy to take more insights. > > So the larger context. I inherited a DSpace instance with three > custom metadata fields which actually have some useful publication > information, though they improperly titled them in by associating them > with a dc prefix but there were two many to fix quickly and they > haven't broken DSpace yet so we continue. So I added to the XSL to > pull the data within the the custom fields to display "publication > name" Vol. "publication volume" Issue "publication issue". That > worked really well until I realized that there was no conditional so > even when the fields are empty I still get: <dc:identifier>Vol. > Issue</dc:identifier> > > So here are the Custom Metadata fields: > > dc.publication.issue > dc.publication.name > dc.publication.volume > > > Here is the customized XSLT, with dc.identifier added for context of > what the rest of the sheet looks like. > > <!-- dc.identifier --> > <xsl:for-each > > select="doc:metadata/doc:element[@name='dc']/doc:element[@name='identifier']/doc:element/doc:field[@name='value']"> > <dc:identifier><xsl:value-of select="." /></dc:identifier> > </xsl:for-each> > > <!-- dc.identifier.* --> > <xsl:for-each > select="doc:metadata/doc:element[@name='dc']/doc:element[@name='identifier']/doc:element/doc:element/doc:field[@name='value']"> > <dc:identifier><xsl:value-of select="." /></dc:identifier> > </xsl:for-each> > > <!-- dc.publication fields to dc.identifier --> > <dc:identifier><xsl:value-of > > select="doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='name']/doc:element/doc:field[@name='value']"/><xsl:text> > Vol. </xsl:text><xsl:value-of > > select="doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='volume']/doc:element/doc:field[@name='value']"/><xsl:text> > Issue </xsl:text><xsl:value-of > > select="doc:metadata/doc:element[@name='dc']/doc:element[@name='publication']/doc:element[@name='issue']/doc:element/doc:field[@name='value']"/></dc:identifier> > > > Ron suggested that using choose and when and that does seem to make > the most sense. The other trickiness is that I have found that some > of these fields as filled when others are blank, such as their being a > volume but not an issue. So I need to figure out how to test multiple > fields so that I can have it display differently dependent on what has > data or not at all none of the fields are filled, which is the case in > items such as posters. > > So any thoughts would help. Thanks. > > On Tue, Jun 2, 2015 at 2:50 PM, Wick, Ryan <[log in to unmask]> > wrote: > > I agree with Stuart, post the example here. > > > > Or if you want more real-time chat there's always #code4lib IRC. > > > > For an XSLT resource, Dave Pawson's site is great: > http://www.dpawson.co.uk/xsl/sect2/sect21.html > > > > Ryan Wick > > > > -----Original Message----- > > From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of > Stuart A. Yeates > > Sent: Tuesday, June 02, 2015 11:46 AM > > To: [log in to unmask] > > Subject: Re: [CODE4LIB] XSLT Advice > > > > There are a number of experienced xslt'ers here. Post your example to > the group so we can all learn. > > > > Cheers > > Stuart > > > > On Wednesday, June 3, 2015, Matt Sherman <[log in to unmask]> > wrote: > > > >> Hi all, > >> > >> I am making a few corrections on an oai_dc.xslt file for our DSpace > >> instance I slightly botched modifying to integrate some custom > >> metadata into a dc.identifier citation in the OAI-PMH harvest. I need > >> to get proper conditionals so it can display and harvest the metadata > >> correctly and not run when there is no data in those fields. I have a > >> pretty good idea what I need to do, and if this were like JavaScript > >> or Python I could probably muddle through. The trouble is that I > >> don't know the conditional syntax for XSLT quite well enough to know > >> what I can do and thus need to do. Plus the online resources for > >> learning/referencing XSLT for this are a bit shallow for what I need > >> hence asking the group. So if there is anyone who knows XSLT really > >> well that would be willing to talk with me for a bit to help me work > >> through what I need to get the syntax to work like I want I would > >> appreciate it. Thanks. > >> > >> Matt Sherman > >> > > > > > > -- > > -- > > ...let us be heard from red core to black sky >