AbstractApplicationController and the individual controllers are now completely reloaded on each request if "reload_dependencies" is set to true. This makes it possible to REMOVE methods and constants and have the changes reflected. Beaware that this is still not possible for models, though.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@31 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/dispatches/dispatch.rb

@@ -6,5 +6,5 @@ require File.dirname(__FILE__) + "/../config/environment"
 # "/usr/local/lib/ruby/gems/1.8/gems/rails-0.8.0/lib/dispatcher" -- otherwise performance is severely impaired
 require "dispatcher"
 
-ADDITIONAL_LOAD_PATHS.flatten.each { |dir| $:.unshift "#{RAILS_ROOT}/#{dir}" }
+ADDITIONAL_LOAD_PATHS.reverse.each { |dir| $:.unshift(dir) if File.directory?(dir) }
 Dispatcher.dispatch

railties/environments/shared.rb

@@ -6,14 +6,14 @@ RAILS_ENV  = ENV['RAILS_ENV'] || 'development'
 ADDITIONAL_LOAD_PATHS = ["#{RAILS_ROOT}/test/mocks/#{RAILS_ENV}"]
 
 # Then model subdirectories.
-ADDITIONAL_LOAD_PATHS.concat(Dir["#{RAILS_ROOT}/app/models/[a-z]*"])
+ADDITIONAL_LOAD_PATHS.concat(Dir["#{RAILS_ROOT}/app/models/[_a-z]*"])
 
 # Followed by the standard includes.
 ADDITIONAL_LOAD_PATHS.concat %w(
+  app
   app/models
   app/controllers
   app/helpers
-  app
   config
   lib
   vendor
@@ -25,9 +25,7 @@ ADDITIONAL_LOAD_PATHS.concat %w(
 ).map { |dir| "#{RAILS_ROOT}/#{dir}" }
 
 # Prepend to $LOAD_PATH
-ADDITIONAL_LOAD_PATHS.reverse.each do |dir|
-  $:.unshift(dir) if File.directory?(dir)
-end
+ADDITIONAL_LOAD_PATHS.reverse.each { |dir| $:.unshift(dir) if File.directory?(dir) }
 
 
 # Require Rails libraries.
@@ -37,12 +35,10 @@ require 'action_mailer'
 
 
 # Environment-specific configuration.
+ActionController::Base.require_or_load "environments/#{RAILS_ENV}"
 ActiveRecord::Base.configurations = YAML::load(File.open("#{RAILS_ROOT}/config/database.yml"))
 ActiveRecord::Base.establish_connection
 
-ActionController::Base.require_or_load 'abstract_application'
-ActionController::Base.require_or_load "environments/#{RAILS_ENV}"
-
 
 # Configure defaults if the included environment did not.
 RAILS_DEFAULT_LOGGER = Logger.new("#{RAILS_ROOT}/log/#{RAILS_ENV}.log")
@@ -53,4 +49,5 @@ end
   klass.template_root ||= "#{RAILS_ROOT}/app/views/"
 end
 
+
 # Include your app's configuration here:

railties/environments/shared_for_gem.rb

@@ -6,10 +6,11 @@ RAILS_ENV  = ENV['RAILS_ENV'] || 'development'
 ADDITIONAL_LOAD_PATHS = ["#{RAILS_ROOT}/test/mocks/#{RAILS_ENV}"]
 
 # Then model subdirectories.
-ADDITIONAL_LOAD_PATHS.concat(Dir["#{RAILS_ROOT}/app/models/[a-z]*"])
+ADDITIONAL_LOAD_PATHS.concat(Dir["#{RAILS_ROOT}/app/models/[_a-z]*"])
 
 # Followed by the standard includes.
 ADDITIONAL_LOAD_PATHS.concat %w(
+  app
   app/models
   app/controllers
   app/helpers
@@ -19,9 +20,7 @@ ADDITIONAL_LOAD_PATHS.concat %w(
 ).map { |dir| "#{RAILS_ROOT}/#{dir}" }
 
 # Prepend to $LOAD_PATH
-ADDITIONAL_LOAD_PATHS.reverse.each do |dir|
-  $:.unshift(dir) if File.directory?(dir)
-end
+ADDITIONAL_LOAD_PATHS.reverse.each { |dir| $:.unshift(dir) if File.directory?(dir) }
 
 
 # Require Rails gems.
@@ -33,11 +32,10 @@ require_gem 'rails'
 
 
 # Environment-specific configuration.
+ActionController::Base.require_or_load "environments/#{RAILS_ENV}"
 ActiveRecord::Base.configurations = YAML::load(File.open("#{RAILS_ROOT}/config/database.yml"))
 ActiveRecord::Base.establish_connection
 
-ActionController::Base.require_or_load 'abstract_application'
-ActionController::Base.require_or_load "environments/#{RAILS_ENV}"
 
 # Configure defaults if the included environment did not.
 RAILS_DEFAULT_LOGGER = Logger.new("#{RAILS_ROOT}/log/#{RAILS_ENV}.log")

railties/helpers/test_helper.rb

@@ -1,5 +1,6 @@
 ENV["RAILS_ENV"] ||= "test"
 require File.dirname(__FILE__) + "/../config/environment"
+require 'abstract_application'
 
 require 'test/unit'
 require 'active_record/fixtures'

railties/lib/dispatcher.rb

@@ -29,18 +29,13 @@ class Dispatcher
       request  = ActionController::CgiRequest.new(cgi, session_options)
       response = ActionController::CgiResponse.new(cgi)
       
-      controller_name = request.parameters["controller"].gsub(/[^_a-zA-Z0-9]/, "").untaint
+      controller_name, module_name = controller_name(request.parameters), module_name(request.parameters)
 
-      if module_name = request.parameters["module"]
-        Module.new do
-          ActionController::Base.require_or_load "#{module_name}/#{Inflector.underscore(controller_name)}_controller"
-          Object.const_get("#{Inflector.camelize(controller_name)}Controller").process(request, response).out
-        end
-      else
-        ActionController::Base.require_or_load "#{Inflector.underscore(controller_name)}_controller"
-        Object.const_get("#{Inflector.camelize(controller_name)}Controller").process(request, response).out
-      end
-    rescue Exception => e
+      ActionController::Base.require_or_load("abstract_application")
+      ActionController::Base.require_or_load(controller_path(controller_name, module_name))
+
+      controller_class(controller_name).process(request, response).out
+    rescue Object => e
       begin
         ActionController::Base.logger.info "\n\nException throw during dispatch: #{e.message}\n#{e.backtrace.join("\n")}"
       rescue Exception
@@ -50,6 +45,35 @@ class Dispatcher
       if error_page then cgi.out{ IO.readlines(error_page) } else raise e end
     ensure
       ActiveRecord::Base.reset_associations_loaded
+
+      if ActionController::Base.reload_dependencies
+        Object.send(:remove_const, "AbstractApplicationController")
+        Object.send(:remove_const, controller_class_name(controller_name)) if Object.const_defined?(controller_class_name(controller_name))
+      end
     end
   end
+  
+  def self.controller_path(controller_name, module_name = nil)
+    if module_name
+      "#{module_name}/#{Inflector.underscore(controller_name)}_controller"
+    else
+      "#{Inflector.underscore(controller_name)}_controller"
+    end
+  end
+  
+  def self.controller_class(controller_name)
+    Object.const_get(controller_class_name(controller_name))
+  end
+  
+  def self.controller_class_name(controller_name)
+    "#{Inflector.camelize(controller_name)}Controller"
+  end
+  
+  def self.controller_name(parameters)
+    parameters["controller"].gsub(/[^_a-zA-Z0-9]/, "").untaint
+  end
+  
+  def self.module_name(parameters)
+    parameters["module"].gsub(/[^_a-zA-Z0-9]/, "").untaint if parameters["module"]
+  end
 end