ExternalizerSlightly.java

package wemblog.sightly.use

@Model(adaptables = SlingHttpServletRequest.class)
public class ExternalUrl {

@Inject
private Externalizer externalizer;
@Inject // Using the bindings from Sightly (${currentPage.path}
protected Page currentPage;
@Inject @Optional // parameter from data-sly-use
protected String path;

@PostConstruct
protected void init() {
 String relPath = currentPage.getPath();
 if ( path != null) { // check if there is a parameter
 relPath = path;
 }
 absoluteUrl = externalize(relPath);
 }
 protected String externalize(String path) {
 return externalizer.absoluteLink(request, "http", path);
 }
 
}


#In your Sighly file
<meta data-sly-use.externalizer="${'wemblog.sightly.use.ExternalUrl' @ path=resourcePage.path}" 
property="og:url" 
content="${externalizer.absoluteUrl @ context='uri'}.html" />