Twitter cards and open graph in page-structure.xsl
Fitchett, Deborah
Kia ora koutou,
Has anyone played around with Twitter cards and/or Open Graph with Dspace? The goal being that, if someone tweets a link to an item in the repository, Twitter (or Facebook or whoever) automatically displays a little preview of the item’s title, thumbnail etc. This seems likely to improve click-throughs/engagement.
I’ve edited page-structure.xsl (we’re on XMLUI, Mirage2) to get some basic metadata in – following the Google Scholar Metadata section:
<!-- Add Open Graph tags for appearance on social media -->
<meta property="og:type" content="article"/>
<meta property="og:site_name" content="Research@Lincoln"/>
<meta property="og:image" content="https://ltl.lincoln.ac.nz/wp-content/uploads/sites/20/2020/01/lincoln.png"/>
<xsl:for-each select="/dri:document/dri:meta/dri:pageMeta/dri:metadata[@element = 'title']">
<meta property="og:title" content="{.}"/>
</xsl:for-each>
<xsl:for-each select="/dri:document/dri:meta/dri:pageMeta/dri:metadata[@element = 'identifier']">
<meta property="og:url" content="https://hdl.handle.net/{.}"/>
</xsl:for-each>
Which experiments on Twitter show works! J
But note the image is a static logo, and I haven’t managed to get a description in. This content doesn’t appear to be included in the dri structure – except that dcterms.abstract is buried in the xhtml_head_item which is a giant blob-thing of xml as text so I can’t reach into it (unless maybe I play with substrings). Is there any other way to get at the abstract here?
And is there a way to access the mets data from page-structure.xsl? (If so, I should be able to get the item’s thumbnail to use for the image.) We have in item-view.xsl and I don’t see why it wouldn’t be accessible from page-structure.xsl, but maybe that shows how much I know. In any case so far all my trial-and-error messing around trying to access it has resulted in errors.
Ngā mihi,
Deborah
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Deborah Fitchett
Head of Department: Digital Services
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Library, Teaching and Learning – Te Wharepūrākau
PO Box 85064, Lincoln University
Lincoln 7647, Christchurch, New Zealand
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Lincoln University
Te Whare Wānaka o Aoraki
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Fitchett, Deborah
Thanks! Do let me know if you figure out a way to get at the thumbnail and/or abstract data.
Note, as far as I can tell the Twitter Card validator only works if there’s an actual twitter:card tag, which I haven’t included in my code below; but the card seems to display on Twitter without it.
It also works on LinkedIn – except that they’ve got a minimum image size requirement [https://www.linkedin.com/help/linkedin/answer/46687/making-your-website-shareable-on-linkedin?lang=en], so a mere logo isn’t displayed.
I haven’t yet tested Facebook.
Deborah