Function translationContext

The translation context contains information about supported languages and the translated strings. Any translations will be automatically applied to Diet templates, as well as strings passed to trWeb.

By default, the "Accept-Language" header of the incoming request will be used to determine the language used. To override this behavior, add a static method determineLanguage to the translation context, which takes the request and returns a language string (see also the second example).

Example

import vibe.http.router : URLRouter;
import vibe.web.web : registerWebInterface;

struct TranslationContext {
	import std.typetuple;
	alias languages = TypeTuple!("en_US", "de_DE", "fr_FR");
	//mixin translationModule!"app";
	//mixin translationModule!"somelib";
}

@translationContext!TranslationContext
class MyWebInterface {
	void getHome()
	{
		//render!("home.dt")
	}
}

void test(URLRouter router)
{
	router.registerWebInterface(new MyWebInterface);
}

Example

Defining a custom function for determining the language.

import vibe.http.router : URLRouter;
import vibe.http.server;
import vibe.web.web : registerWebInterface;

struct TranslationContext {
	import std.typetuple;
	// A language can be in the form en_US, en-US or en. Put the languages you want to prioritize first.
	alias languages = TypeTuple!("en_US", "de_DE", "fr_FR");
	//mixin translationModule!"app";
	//mixin translationModule!"somelib";

	// use language settings from the session instead of using the
	// "Accept-Language" header
	static string determineLanguage(scope HTTPServerRequest req)
	{
		if (!req.session) return req.determineLanguageByHeader(languages); // default behaviour using "Accept-Language" header
		return req.session.get("language", "");
	}
}

@translationContext!TranslationContext
class MyWebInterface {
	void getHome()
	{
		//render!("home.dt")
	}
}

void test(URLRouter router)
{
	router.registerWebInterface(new MyWebInterface);
}