require "action_view/view_paths" module ActionView # This is a class to fix I18n global state. Whenever you provide I18n.locale during a request, # it will trigger the lookup_context and consequently expire the cache. class I18nProxy < ::I18n::Config #:nodoc: attr_reader :original_config, :lookup_context def initialize(original_config, lookup_context) original_config = original_config.original_config if original_config.respond_to?(:original_config) @original_config, @lookup_context = original_config, lookup_context end def locale @original_config.locale end def locale=(value) @lookup_context.locale = value end end module Rendering extend ActiveSupport::Concern include ActionView::ViewPaths # Overwrite process to setup I18n proxy. def process(*) #:nodoc: old_config, I18n.config = I18n.config, I18nProxy.new(I18n.config, lookup_context) super ensure I18n.config = old_config end module ClassMethods def view_context_class @view_context_class ||= begin include_path_helpers = supports_path? routes = respond_to?(:_routes) && _routes helpers = respond_to?(:_helpers) && _helpers Class.new(ActionView::Base) do if routes include routes.url_helpers(include_path_helpers) include routes.mounted_helpers end if helpers include helpers end end end end end attr_internal_writer :view_context_class def view_context_class @_view_context_class ||= self.class.view_context_class end # An instance of a view class. The default view class is ActionView::Base # # The view class must have the following methods: # View.new[lookup_context, assigns, controller] # Create a new ActionView instance for a controller and we can also pass the arguments. # View#render(option) # Returns String with the rendered template # # Override this method in a module to change the default behavior. def view_context view_context_class.new(view_renderer, view_assigns, self) end # Returns an object that is able to render templates. # :api: private def view_renderer @_view_renderer ||= ActionView::Renderer.new(lookup_context) end def render_to_body(options = {}) _process_options(options) _render_template(options) end def rendered_format Mime[lookup_context.rendered_format] end private # Find and render a template based on the options given. # :api: private def _render_template(options) #:nodoc: variant = options[:variant] lookup_context.rendered_format = nil if options[:formats] lookup_context.variants = variant if variant view_renderer.render(view_context, options) end # Assign the rendered format to lookup context. def _process_format(format, options = {}) #:nodoc: super lookup_context.formats = [format.to_sym] lookup_context.rendered_format = lookup_context.formats.first end # Normalize args by converting render "foo" to render :action => "foo" and # render "foo/bar" to render :file => "foo/bar". # :api: private def _normalize_args(action=nil, options={}) options = super(action, options) case action when NilClass when Hash options = action when String, Symbol action = action.to_s key = action.include?(?/) ? :file : :action options[key] = action else options[:partial] = action end options end # Normalize options. # :api: private def _normalize_options(options) options = super(options) if options[:partial] == true options[:partial] = action_name end if (options.keys & [:partial, :file, :template]).empty? options[:prefixes] ||= _prefixes end options[:template] ||= (options[:action] || action_name).to_s options end end end