Question

In the zentasks example for Play2 we have the method

def isAuthenticated(f: => String => Request[AnyContent] => Result) = {
  Security.Authenticated(username, onUnauthorized) { user =>
    Action(request => f(user)(request))
  }
}

What I would like to do is add another method that I could use if I wanted to get the user directly from the database.

It gets a little boring having to add a wrapper in all methods

def method() = isAuthenticated { username => implicit request =>
  UserDAO.findOneByEmail(username).map { user =>
    Ok(html.user.view(user))
  }.getOrElse(Forbidden)
}

I’m new to functional programming and all these => is making my head spin 🙂

Any suggestions?

Answer 1

You can define another method, for example IsAuthenticatedUser, which would take a parameter of type User => Request[AnyContent] => Result:

def IsAuthenticatedUser(f: User => Request[AnyContent] => Result) = IsAuthenticated { email => request =>
  UserDAO.findOneByEmail(email).map { user =>
    f(user)(request)
  }.getOrElse(Forbidden)
}

You can then use it like as follows:

def method = IsAuthenticatedUser { user => request =>
  Ok(html.user.view(user))
}