Can a kraken.js backend change the content of a webpage?

Question

Using kraken.js (an express.js framework) I'm building a localized website. In the header, there are 3 links to change the language

FR | EN | DE

If the locale is set to FR (according to a cookie) I would like to have the FR link underlined (with a class="active" attribute in html). Sadly, I can't find where to add this behavior. Do I have to use a frontend script or can I add this behavior in dust.js (included in kraken.js) ?

Answer 1

You can add it in dust -- but you're going to have to dig a bit or build middleware to copy the value to where dust can see it.

From the krakenjs-examples/with.i18n project, its lib/locale.js middleware:

module.exports = function () { return function (req, res, next) { var locale = req.cookies && req.cookies.locale; //Set the locality for this response. The template will pick the appropriate bundle res.locals.context = { locality: locale }; next(); }; };

That puts it on res.locals where dust can find it.