Summary

• Objects (1 modified, 0 added, 0 removed)
  • ExtensionPoint.UIXDescriptionClass[0]

Details

ExtensionPoint.UIXDescriptionClass[0]

How this Extension Point is used

...	...	@@ -2,12 +2,39 @@
2	2
3	3	It was introduced in version 11.1RC1 with the identifier ##org.xwiki.platform.head## and was later changed to ##org.xwiki.platform.html.head## in 11.5.
4	4
5		-The first screenshot below illustrates an example of metadata tags injected into the HTML ##head## using this extension point. The second one shows the code used by a User Interface Extension (UIX) to produce such content.
	5	+The screenshot below illustrates an example of metadata tags injected into the HTML ##head## using this extension point. The second one shows the code used by a User Interface Extension (UIX) to produce such content.
6	6
7	7	(% style="border: 1px solid #ccc" %)(((
8	8	[[image:html-head-extension-example.jpg]]
9	9	)))
10	10
11		-(% style="margin-top: 1em; border: 1px solid #ccc" %)(((
12		-[[image:html-head-extension-code-example.jpg]]
13		-)))
	11	+Such custom metadata tags can be produced by the following code sample, copied from the [[OpenGraph application>>extensions:Extension.OpenGraph Application.WebHome]].
	12	+
	13	+{{code}}
	14	+{{velocity}}
	15	+{{html clean="false"}}
	16	+#set ($serverUrl = $xcontext.URLFactory.getServerURL($xcontext.context))
	17	+#set ($hasImages = false)
	18	+#macro(addOpenGraphTagsForAttachedImages $pageReference)
	19	+ #set ($page = $xwiki.getDocument($pageReference))
	20	+ #foreach ($attachment in $page.attachmentList)
	21	+ #if ($attachment.isImage())
	22	+ #set ($hasImages = true)
	23	+ #set ($path= $page.getAttachmentURL($attachment.filename))
	24	+ <meta property="og:image" content="$serverUrl$path" />
	25	+ #end
	26	+ #end
	27	+#end
	28	+<meta property="og:url" content="$doc.externalURL"/>
	29	+<meta property="og:type" content="article" />
	30	+<meta property="og:title" content="$tdoc.getRenderedTitle("plain/1.0")" />
	31	+## Add all current page's image attachments as "og:image".
	32	+#addOpenGraphTagsForAttachedImages($doc.documentReference)
	33	+## If current page has no attached image, add the ones of the home page, if any.
	34	+#set ($wikiDescriptor = $services.wiki.getById($xcontext.wiki))
	35	+#if (!$hasImages && $wikiDescriptor && $doc.documentReference != $wikiDescriptor.mainPageReference)
	36	+ #addOpenGraphTagsForAttachedImages($wikiDescriptor.mainPageReference)
	37	+#end
	38	+{{/html}}
	39	+{{/velocity}}
	40	+{{/code}}