Fix #1348: global functions called during mount.

CHANGELOG.md

@@ -1,6 +1,7 @@
 0.16.2 (Next)
 ============
 
+* [#1348](https://github.com/ruby-grape/grape/pull/1348): Fix global functions polluting Grape::API scope - [@dblock](https://github.com/dblock).
 * Your contribution here.
 
 0.16.1 (4/3/2016)

lib/grape/router/attribute_translator.rb

@@ -1,39 +1,29 @@
-require 'delegate'
-require 'ostruct'
-
 module Grape
   class Router
-    class AttributeTranslator < DelegateClass(OpenStruct)
-      def self.register(*attributes)
-        AttributeTranslator.supported_attributes.concat(attributes)
-      end
-
-      def self.supported_attributes
-        @supported_attributes ||= []
-      end
-
+    # this could be an OpenStruct, but doesn't work in Ruby 2.3.0, see https://bugs.ruby-lang.org/issues/12251
+    class AttributeTranslator
       def initialize(attributes = {})
-        ostruct = OpenStruct.new(attributes)
-        super ostruct
         @attributes = attributes
-        self.class.supported_attributes.each do |name|
-          ostruct.send(:"#{name}=", nil) unless ostruct.respond_to?(name)
-          self.class.instance_eval do
-            define_method(name) { instance_variable_get(:"@#{name}") }
-          end if name == :format
-        end
       end
 
       def to_h
-        @attributes.each_with_object({}) do |(key, _), attributes|
-          attributes[key.to_sym] = send(:"#{key}")
-        end
+        @attributes
       end
 
-      private
+      def method_missing(m, *args)
+        if m[-1] == '='
+          @attributes[m[0..-1]] = *args
+        else
+          @attributes[m]
+        end
+      end
 
-      def accessor_available?(name)
-        respond_to?(name) && respond_to?(:"#{name}=")
+      def respond_to_missing?(method_name, _include_private = false)
+        if method_name[-1] == '='
+          true
+        else
+          @attributes.key?(method_name)
+        end
       end
     end
   end

lib/grape/router/route.rb

@@ -8,20 +8,6 @@ class Router
     class Route
       ROUTE_ATTRIBUTE_REGEXP = /route_([_a-zA-Z]\w*)/.freeze
       SOURCE_LOCATION_REGEXP = /^(.*?):(\d+?)(?::in `.+?')?$/.freeze
-      TRANSLATION_ATTRIBUTES = [
-        :prefix,
-        :version,
-        :namespace,
-        :settings,
-        :format,
-        :description,
-        :http_codes,
-        :headers,
-        :entity,
-        :details,
-        :requirements,
-        :request_method
-      ].freeze
 
       attr_accessor :pattern, :translator, :app, :index, :regexp
 
@@ -30,13 +16,6 @@ class Route
       extend Forwardable
       def_delegators :pattern, :path, :origin
 
-      def self.translate(*attributes)
-        AttributeTranslator.register(*attributes)
-        def_delegators :@translator, *attributes
-      end
-
-      translate(*TRANSLATION_ATTRIBUTES)
-
       def method_missing(method_id, *arguments)
         match = ROUTE_ATTRIBUTE_REGEXP.match(method_id.to_s)
         if match
@@ -48,6 +27,25 @@ def method_missing(method_id, *arguments)
         end
       end
 
+      [
+        :prefix,
+        :version,
+        :settings,
+        :format,
+        :description,
+        :http_codes,
+        :headers,
+        :entity,
+        :details,
+        :requirements,
+        :request_method,
+        :namespace
+      ].each do |method_name|
+        define_method method_name do
+          attributes.public_send method_name
+        end
+      end
+
       def route_method
         warn_route_methods(:method, caller(1).shift, :request_method)
         request_method

spec/grape/integration/global_namespace_function_spec.rb

@@ -0,0 +1,29 @@
+# see https://github.com/ruby-grape/grape/issues/1348
+
+require 'spec_helper'
+
+def namespace
+  fail
+end
+
+describe Grape::API do
+  subject do
+    Class.new(Grape::API) do
+      format :json
+      get do
+        { ok: true }
+      end
+    end
+  end
+
+  def app
+    subject
+  end
+
+  context 'with a global namespace function' do
+    it 'works' do
+      get '/'
+      expect(last_response.status).to eq 200
+    end
+  end
+end