Allow 'use "model"' as a string as well as symbol

Since const_get works with a string as well as a symbol,
allow that to be used.  It's easier and simpler to just
allow strings as use arguments than to error check and
raise exceptions.

So both of the following should now work:

  Rainbows! do
    use :Revactor
  end

  Rainbows! do
    use "Revactor"
  end

Rainbows! will always use the symbol variant internally,
however, so applications can alway expect env['rainbows.model']
to be a symbol.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/rainbows/http_server.rb b/lib/rainbows/http_server.rb
index 4c4b63b..b150ddc 100644
--- a/lib/rainbows/http_server.rb
+++ b/lib/rainbows/http_server.rb
@@ -31,9 +31,9 @@ module Rainbows
       Module === mod or
         raise ArgumentError, "concurrency model #{model.inspect} not supported"
       extend(mod)
-      Const::RACK_DEFAULTS['rainbows.model'] = @use = model
+      Const::RACK_DEFAULTS['rainbows.model'] = @use = model.to_sym
       Const::RACK_DEFAULTS['rack.multithread'] = !!(/Thread/ =~ model.to_s)
-      case model
+      case @use
       when :Rev, :EventMachine
         Const::RACK_DEFAULTS['rainbows.autochunk'] = true
       end