jordi fita mas
9a8ef8ce9f
The language switcher needs the same information as languageLinks needed, namely the list of locales and the current Path, to construct the URI to all alternate versions. However, in this case i need access to this data in the template context, to build the list of links. At first i use request’s context to hold the list of available locales from application, and it worked, possibly without ill-effects, but i realized that i was doing it just to avoid a new parameter. Or, more precise, an _explicit_ parameter; the context was used to skip the inner functions between app and template.MustRenderPublic, but the parameter was there all the same. Finally, i thought that some handler might want to filter the list of locales to show only the ones that it has a translation of. In that case, i would need to extract the locales from the context, filter it, and create a new request with the updated context. That made little sense, and made me add the explicit locales parameter. Since now the template has the same data as languageLinks, there is little point of having the link in the HTTP response headers, and added the <link> elements to <head>. I thought that maybe i could avoid these <links> as they give the exact same data as the language switch, but Google says nothing of using regular anchors to gather information about localized versions of the document[0], thus i opted to be conservative. One can reason that the <head> has more weight for Google, as most sites with user-generated content, which could contain these anchors, rarely allow users to edit the <head>. [0]: https://developers.google.com/search/docs/specialty/international/localized-versions