Interpolation and External Arguments

welcome = Welcome { $user }
unreadEmails = { $user } has { $emailCount } unread emails.
{
    "user": "Jane",
    "emailCount": 5
}

Another common use case for a placeable is to put an external argument, provided by the developer, into the string.

There are all kinds of external data that might be useful in providing a good localization: user names, number of unread messages, battery level, current time, time left before an alarm goes off, etc.

To reference a variable, use the dollar syntax in your FTL code: $user. user has to be defined in the context data. In the examples below, we insert the value of a context data variable into a message's value.

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