--- /dev/null
+module ::Dependencies
+
+ # we're going to intercept the require_or_load method; lets
+ # make an alias for the current method so we can use it as the basis
+ # for loading from engines.
+ alias :rails_pre_engines_require_or_load :require_or_load
+
+ def require_or_load(file_name)
+ if Engines.config(:edge)
+ rails_edge_require_or_load(file_name)
+
+ elsif Rails::VERSION::STRING =~ /^1.1/
+ # otherwise, assume we're on trunk (1.1 at the moment)
+ rails_1_1_require_or_load(file_name)
+
+ elsif Rails::VERSION::STRING =~ /^1.0/
+ # use the old dependency load method
+ rails_1_0_require_or_load(file_name)
+ end
+ end
+
+ def rails_edge_require_or_load(file_name)
+ rails_1_1_require_or_load(file_name)
+ end
+
+ def rails_1_1_require_or_load(file_name)
+ Engines.log.debug("Engines 1.1 require_or_load: #{file_name}")
+
+ found = false
+
+ # try and load the engine code first
+ # can't use model, as there's nothing in the name to indicate that the file is a 'model' file
+ # rather than a library or anything else.
+ ['controller', 'helper'].each do |type|
+ # if we recognise this type
+ # (this regexp splits out the module/filename from any instances of app/#{type}, so that
+ # modules are still respected.)
+ if file_name =~ /^(.*app\/#{type}s\/)?(.*_#{type})(\.rb)?$/
+
+ # ... go through the active engines from first started to last, so that
+ # code with a high precidence (started later) will override lower precidence
+ # implementations
+ Engines.each(:load_order) do |engine|
+
+ engine_file_name = File.expand_path(File.join(engine.root, 'app', "#{type}s", $2))
+ #engine_file_name = $1 if engine_file_name =~ /^(.*)\.rb$/
+ Engines.log.debug("checking engine '#{engine.name}' for '#{engine_file_name}'")
+ if File.exist?("#{engine_file_name}.rb")
+ Engines.log.debug("==> loading from engine '#{engine.name}'")
+ rails_pre_engines_require_or_load(engine_file_name)
+ found = true
+ end
+ end
+ end
+ end
+
+ # finally, load any application-specific controller classes using the 'proper'
+ # rails load mechanism, EXCEPT when we're testing engines and could load this file
+ # from an engine
+ rails_pre_engines_require_or_load(file_name) unless Engines.disable_app_code_mixing && found
+ end
+
+ def rails_1_0_require_or_load(file_name)
+ file_name = $1 if file_name =~ /^(.*)\.rb$/
+
+ Engines.log.debug "Engines 1.0.0 require_or_load '#{file_name}'"
+
+ # if the file_name ends in "_controller" or "_controller.rb", strip all
+ # path information out of it except for module context, and load it. Ditto
+ # for helpers.
+ found = if file_name =~ /_controller(.rb)?$/
+ require_engine_files(file_name, 'controller')
+ elsif file_name =~ /_helper(.rb)?$/ # any other files we can do this with?
+ require_engine_files(file_name, 'helper')
+ end
+
+ # finally, load any application-specific controller classes using the 'proper'
+ # rails load mechanism, EXCEPT when we're testing engines and could load this file
+ # from an engine
+ Engines.log.debug("--> loading from application: '#{file_name}'")
+ rails_pre_engines_require_or_load(file_name) unless Engines.disable_app_code_mixing && found
+ Engines.log.debug("--> Done loading.")
+ end
+
+ # Load the given file (which should be a path to be matched from the root of each
+ # engine) from all active engines which have that file.
+ # NOTE! this method automagically strips file_name up to and including the first
+ # instance of '/app/controller'. This should correspond to the app/controller folder
+ # under RAILS_ROOT. However, if you have your Rails application residing under a
+ # path which includes /app/controller anyway, such as:
+ #
+ # /home/username/app/controller/my_web_application # == RAILS_ROOT
+ #
+ # then you might have trouble. Sorry, just please don't have your web application
+ # running under a path like that.
+ def require_engine_files(file_name, type='')
+ found = false
+ Engines.log.debug "requiring #{type} file '#{file_name}'"
+ processed_file_name = file_name.gsub(/[\w\W\/\.]*app\/#{type}s\//, '')
+ Engines.log.debug "--> rewrote to '#{processed_file_name}'"
+ Engines.each(:load_order) do |engine|
+ engine_file_name = File.join(engine.root, 'app', "#{type}s", processed_file_name)
+ engine_file_name += '.rb' unless ! load? || engine_file_name[-3..-1] == '.rb'
+ Engines.log.debug "--> checking '#{engine.name}' for #{engine_file_name}"
+ if File.exist?(engine_file_name) ||
+ (engine_file_name[-3..-1] != '.rb' && File.exist?(engine_file_name + '.rb'))
+ Engines.log.debug "--> found, loading from engine '#{engine.name}'"
+ rails_pre_engines_require_or_load(engine_file_name)
+ found = true
+ end
+ end
+ found
+ end
+end
+
+
+# We only need to deal with LoadingModules in Rails 1.0.0
+if Rails::VERSION::STRING =~ /^1.0/ && !Engines.config(:edge)
+ module ::Dependencies
+ class RootLoadingModule < LoadingModule
+ # hack to allow adding to the load paths within the Rails Dependencies mechanism.
+ # this allows Engine classes to be unloaded and loaded along with standard
+ # Rails application classes.
+ def add_path(path)
+ @load_paths << (path.kind_of?(ConstantLoadPath) ? path : ConstantLoadPath.new(path))
+ end
+ end
+ end
+end
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projects / selectricity-live / blobdiff