Fix discrepancies with loading rails/init.rb from gems. [#324 state:r…

…esolved]

railties/CHANGELOG

@@ -1,6 +1,5 @@
 *Edge*
 
-
 * Wrapped Rails.env in StringQuestioneer so you can do Rails.env.development? [DHH]
 
 * Add the gem load paths before the framework is loaded, so certain gems like RedCloth and BlueCloth can be frozen.

railties/lib/rails/gem_dependency.rb

@@ -23,9 +23,13 @@ def initialize(name, options = {})
       @unpack_directory = nil
     end
 
+    def unpacked_paths
+      Dir[File.join(self.class.unpacked_path, "#{@name}-#{@version || "*"}")]
+    end
+
     def add_load_paths
       return if @loaded || @load_paths_added
-      unpacked_paths = Dir[File.join(self.class.unpacked_path, "#{@name}-#{@version || "*"}")]
+      unpacked_paths = self.unpacked_paths
       if unpacked_paths.empty?
         args = [@name]
         args << @requirement.to_s if @requirement

railties/lib/rails/plugin.rb

@@ -87,14 +87,14 @@ def has_init_file?
       end
 
       def evaluate_init_rb(initializer)
-         if has_init_file?
-           silence_warnings do
-             # Allow plugins to reference the current configuration object
-             config = initializer.configuration
-             
-             eval(IO.read(init_path), binding, init_path)
-           end
-         end
+        if has_init_file?
+          silence_warnings do
+            # Allow plugins to reference the current configuration object
+            config = initializer.configuration
+
+            eval(IO.read(init_path), binding, init_path)
+          end
+        end
       end               
   end
 
@@ -103,8 +103,9 @@ def evaluate_init_rb(initializer)
   # to Dependencies.load_paths.
   class GemPlugin < Plugin
     # Initialize this plugin from a Gem::Specification.
-    def initialize(spec)
-      super(File.join(spec.full_gem_path))
+    def initialize(spec, gem)
+      directory = (gem.frozen? && gem.unpacked_paths.first) || File.join(spec.full_gem_path)
+      super(directory)
       @name = spec.name
     end
 

railties/lib/rails/plugin/locator.rb

@@ -78,8 +78,9 @@ def locate_plugins_under(base_path)
     # a <tt>rails/init.rb</tt> file.
     class GemLocator < Locator
       def plugins
-        specs  = initializer.configuration.gems.map(&:specification)
-        specs += Gem.loaded_specs.values.select do |spec|
+        gem_index = initializer.configuration.gems.inject({}) { |memo, gem| memo.update gem.specification => gem }
+        specs     = gem_index.keys
+        specs    += Gem.loaded_specs.values.select do |spec|
           spec.loaded_from && # prune stubs
             File.exist?(File.join(spec.full_gem_path, "rails", "init.rb"))
         end
@@ -91,7 +92,7 @@ def plugins
         deps.add(*specs) unless specs.empty?
 
         deps.dependency_order.collect do |spec|
-          Rails::GemPlugin.new(spec)
+          Rails::GemPlugin.new(spec, gem_index[spec])
         end
       end
     end

railties/test/plugin_loader_test.rb

@@ -94,7 +94,7 @@ def test_should_accept_plugin_names_given_as_strings
 
     def test_should_add_plugin_load_paths_to_global_LOAD_PATH_array
       only_load_the_following_plugins! [:stubby, :acts_as_chunky_bacon]
-      stubbed_application_lib_index_in_LOAD_PATHS = 5
+      stubbed_application_lib_index_in_LOAD_PATHS = 4
       @loader.stubs(:application_lib_index).returns(stubbed_application_lib_index_in_LOAD_PATHS)
 
       @loader.add_plugin_load_paths