lib/grape/middleware/versioner/param.rb in grape-0.13.0 vs lib/grape/middleware/versioner/param.rb in grape-0.14.0

@@ -19,23 +19,20 @@
       #
       #   env['api.version'] => 'v1'
       class Param < Base
         def default_options
           {
-            parameter: 'apiver'
+            parameter: 'apiver'.freeze
           }
         end
 
         def before
           paramkey = options[:parameter]
           potential_version = Rack::Utils.parse_nested_query(env[Grape::Http::Headers::QUERY_STRING])[paramkey]
-          unless potential_version.nil?
-            if options[:versions] && !options[:versions].find { |v| v.to_s == potential_version }
-              throw :error, status: 404, message: '404 API Version Not Found', headers: { Grape::Http::Headers::X_CASCADE => 'pass' }
-            end
-            env['api.version'] = potential_version
-            env['rack.request.query_hash'].delete(paramkey) if env.key? 'rack.request.query_hash'
-          end
+          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
         end
       end
     end
   end
 end