param.rb in grape-2.1.0

- old
+ new

@@ -1,9 +1,7 @@
 # frozen_string_literal: true
 
-require 'grape/middleware/base'
-
 module Grape
   module Middleware
     module Versioner
       # This middleware sets various version related rack environment variables
       # based on the request parameters and removes that parameter from the
@@ -28,15 +26,15 @@
             }
           }
         end
 
         def before
-          potential_version = Rack::Utils.parse_nested_query(env[Grape::Http::Headers::QUERY_STRING])[paramkey]
+          potential_version = Rack::Utils.parse_nested_query(env[Rack::QUERY_STRING])[paramkey]
           return if potential_version.nil?
 
           throw :error, status: 404, message: '404 API Version Not Found', headers: { Grape::Http::Headers::X_CASCADE => 'pass' } if options[:versions] && !options[:versions].find { |v| v.to_s == potential_version }
           env[Grape::Env::API_VERSION] = potential_version
-          env[Grape::Env::RACK_REQUEST_QUERY_HASH].delete(paramkey) if env.key? Grape::Env::RACK_REQUEST_QUERY_HASH
+          env[Rack::RACK_REQUEST_QUERY_HASH].delete(paramkey) if env.key? Rack::RACK_REQUEST_QUERY_HASH
         end
 
         private
 
         def paramkey