Switch between different languages interface in cakePhp

I am learning the locale f开发者_StackOverflow社区unction in Cakephp.

I am not sure how to design my own locale files so that

users can switch between Spanish and English in my web sites.

Please advise.

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The first place I'd go is here, http://book.cakephp.org/view/162/Internationalizing-Your-Application

I've not tried this before, as the project I was working on, English and Swedish, someone had already done the setup.

From what I understand you can manage the language in your routes, to have example.com/en/ or example.com/se then your other routes, and that will load up the correct language translations.

As I understand it there are multiple methods for managing how you switch the language from routes to sessions.