How to get text key localization value by locale/language or node ID with REST or Endpoint?

Hey bma,

1) Currently the text.format call doesn't allow you to specify the locale to use yourself. It will do whatever is most reasonable based on user and node settings. I would suggest you file it as an idea in our idea board as I see this as a good enhancement to have.

2) I'm assuming by default configured language you mean the community default language? In which case you can use the community settings api to determine what language setting is set on the community and then compare it to the user setting. (rest('/settings/name/profile.language').value) You can also use the settings freemarker context object to figure out what will be the derived setting (the setting that will be used) for the current user at the current node.

3) From what I can tell 'config.language' is no longer used and you should always be using 'profile.language'

Hope this helps,

Yuri