From c844755e5a0c3d4edfcc78f9c30ef91fa0de550a Mon Sep 17 00:00:00 2001 From: David Heinemeier Hansson Date: Tue, 15 Feb 2005 00:51:02 +0000 Subject: Merged back the Routing branch git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@614 5ecf4fe2-1ee6-0310-87b1-e25e094e27de --- .../lib/core_ext/hash/indifferent_access.rb | 10 ++-- activesupport/lib/core_ext/string/inflections.rb | 4 ++ activesupport/lib/dependencies.rb | 67 +++++++++++++++++++++- activesupport/lib/inflector.rb | 12 +++- 4 files changed, 84 insertions(+), 9 deletions(-) (limited to 'activesupport/lib') diff --git a/activesupport/lib/core_ext/hash/indifferent_access.rb b/activesupport/lib/core_ext/hash/indifferent_access.rb index 3fe0999866..2353cfaf3b 100644 --- a/activesupport/lib/core_ext/hash/indifferent_access.rb +++ b/activesupport/lib/core_ext/hash/indifferent_access.rb @@ -8,17 +8,17 @@ class HashWithIndifferentAccess < Hash end end - alias_method :regular_read, :[] + alias_method :regular_reader, :[] unless method_defined?(:regular_reader) def [](key) case key - when Symbol: regular_read(key) || regular_read(key.to_s) - when String: regular_read(key) || regular_read(key.to_sym) - else regular_read(key) + when Symbol: regular_reader(key) || regular_reader(key.to_s) + when String: regular_reader(key) || regular_reader(key.to_sym) + else regular_reader(key) end end - alias_method :regular_writer, :[]= + alias_method :regular_writer, :[]= unless method_defined?(:regular_writer) def []=(key, value) regular_writer(key.is_a?(String) ? key.to_sym : key, value) diff --git a/activesupport/lib/core_ext/string/inflections.rb b/activesupport/lib/core_ext/string/inflections.rb index 5d1070b00a..aa4ff3a74d 100644 --- a/activesupport/lib/core_ext/string/inflections.rb +++ b/activesupport/lib/core_ext/string/inflections.rb @@ -39,6 +39,10 @@ module ActiveSupport #:nodoc: def foreign_key(separate_class_name_and_id_with_underscore = true) Inflector.foreign_key(self, separate_class_name_and_id_with_underscore) end + + def constantize + Inflector.constantize(self) + end end end end diff --git a/activesupport/lib/dependencies.rb b/activesupport/lib/dependencies.rb index 7f53998e7a..0a9b8e1d3d 100644 --- a/activesupport/lib/dependencies.rb +++ b/activesupport/lib/dependencies.rb @@ -2,7 +2,7 @@ require File.dirname(__FILE__) + '/module_attribute_accessors' module Dependencies extend self - + @@loaded = [ ] mattr_accessor :loaded @@ -41,6 +41,68 @@ module Dependencies def remove_subclasses_for(*classes) classes.each { |klass| klass.remove_subclasses } end + + # LoadingModules implement namespace-safe dynamic loading. + # They support automatic loading via const_missing, allowing contained items to be automatically + # loaded when required. No extra syntax is required, as expressions such as Controller::Admin::UserController + # load the relavent files automatically. + # + # Ruby-style modules are supported, as a folder named 'submodule' will load 'submodule.rb' when available. + class LoadingModule < Module + attr_reader :path + + def initialize(filesystem_root, path=[]) + @path = path + @filesystem_root = filesystem_root + end + + # The path to this module in the filesystem. + # Any subpath provided is taken to be composed of filesystem names. + def filesystem_path(subpath=[]) + File.join(@filesystem_root, self.path, subpath) + end + + # Load missing constants if possible. + def const_missing(name) + return const_get(name) if const_defined?(name) == false && const_load!(name) + super(name) + end + + # Load the controller class or a parent module. + def const_load!(name) + name = name.to_s if name.kind_of? Symbol + + if File.directory? filesystem_path(name.underscore) + # Is it a submodule? If so, create a new LoadingModule *before* loading it. + # This ensures that subitems will be loadable + new_module = LoadingModule.new(@filesystem_root, self.path + [name.underscore]) + const_set(name, new_module) + Object.const_set(name, new_module) if @path.empty? + end + + source_file = filesystem_path("#{(name == 'ApplicationController' ? 'Application' : name).underscore}.rb") + self.load_file(source_file) if File.file?(source_file) + self.const_defined?(name.camelize) + end + + # Is this name present or loadable? + # This method is used by Routes to find valid controllers. + def const_available?(name) + name = name.to_s unless name.kind_of? String + File.directory?(filesystem_path(name.underscore)) || File.file?(filesystem_path("#{name.underscore}.rb")) + end + + def clear + constants.each do |name| + Object.send(:remove_const, name) if Object.const_defined?(name) && @path.empty? + self.send(:remove_const, name) + end + end + + def load_file(file_path) + Controllers.module_eval(IO.read(file_path), file_path, 1) # Hard coded Controller line here!!! + end + end end Object.send(:define_method, :require_or_load) { |file_name| Dependencies.require_or_load(file_name) } unless Object.respond_to?(:require_or_load) @@ -52,6 +114,9 @@ class Object #:nodoc: # Use const_missing to autoload associations so we don't have to # require_association when using single-table inheritance. def const_missing(class_id) + if Object.const_defined?(:Controllers) and Object::Controllers.const_available?(class_id) + return Object::Controllers.const_get(class_id) + end begin require_or_load(class_id.to_s.demodulize.underscore) if Object.const_defined?(class_id) then return Object.const_get(class_id) else raise LoadError end diff --git a/activesupport/lib/inflector.rb b/activesupport/lib/inflector.rb index 065fad3762..a9b2f87be4 100644 --- a/activesupport/lib/inflector.rb +++ b/activesupport/lib/inflector.rb @@ -20,11 +20,11 @@ module Inflector end def camelize(lower_case_and_underscored_word) - lower_case_and_underscored_word.to_s.gsub(/(^|_)(.)/){$2.upcase} + lower_case_and_underscored_word.to_s.gsub(/\/(.?)/) { "::" + $1.upcase }.gsub(/(^|_)(.)/) { $2.upcase } end def underscore(camel_cased_word) - camel_cased_word.to_s.gsub(/([A-Z]+)([A-Z])/,'\1_\2').gsub(/([a-z])([A-Z])/,'\1_\2').downcase + camel_cased_word.to_s.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z])/,'\1_\2').gsub(/([a-z])([A-Z])/,'\1_\2').downcase end def humanize(lower_case_and_underscored_word) @@ -47,7 +47,13 @@ module Inflector Inflector.underscore(Inflector.demodulize(class_name)) + (separate_class_name_and_id_with_underscore ? "_id" : "id") end - + + def constantize(camel_cased_word) + camel_cased_word.split("::").inject(Object) do |final_type, part| + final_type = final_type.const_get(part) + end + end + private def plural_rules #:doc: [ -- cgit v1.2.3