require 'action_view/base' module AbstractController module ViewPaths extend ActiveSupport::Concern included do class_attribute :_view_paths self._view_paths = ActionView::PathSet.new self._view_paths.freeze end delegate :template_exists?, :view_paths, :formats, :formats=, :locale, :locale=, :to => :lookup_context module ClassMethods def parent_prefixes @parent_prefixes ||= begin parent_controller = superclass prefixes = [] until parent_controller.abstract? prefixes << parent_controller.controller_path parent_controller = parent_controller.superclass end prefixes end end end # The prefixes used in render "foo" shortcuts. def _prefixes @_prefixes ||= begin parent_prefixes = self.class.parent_prefixes parent_prefixes.dup.unshift(controller_path) end end # LookupContext is the object responsible to hold all information required to lookup # templates, i.e. view paths and details. Check ActionView::LookupContext for more # information. def lookup_context @_lookup_context ||= ActionView::LookupContext.new(self.class._view_paths, details_for_lookup, _prefixes) end def details_for_lookup { } end def append_view_path(path) lookup_context.view_paths.push(*path) end def prepend_view_path(path) lookup_context.view_paths.unshift(*path) end module ClassMethods # Append a path to the list of view paths for this controller. # # ==== Parameters # * path - If a String is provided, it gets converted into # the default view path. You may also provide a custom view path # (see ActionView::PathSet for more information) def append_view_path(path) self._view_paths = view_paths + Array(path) end # Prepend a path to the list of view paths for this controller. # # ==== Parameters # * path - If a String is provided, it gets converted into # the default view path. You may also provide a custom view path # (see ActionView::PathSet for more information) def prepend_view_path(path) self._view_paths = ActionView::PathSet.new(Array(path) + view_paths) end # A list of all of the default view paths for this controller. def view_paths _view_paths end # Set the view paths. # # ==== Parameters # * paths - If a PathSet is provided, use that; # otherwise, process the parameter into a PathSet. def view_paths=(paths) self._view_paths = ActionView::PathSet.new(Array(paths)) end end end end