diff options
Diffstat (limited to 'actionpack/lib/action_controller/abstract/helpers.rb')
| -rw-r--r-- | actionpack/lib/action_controller/abstract/helpers.rb | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/actionpack/lib/action_controller/abstract/helpers.rb b/actionpack/lib/action_controller/abstract/helpers.rb index 968d3080c1..41decfd0c7 100644 --- a/actionpack/lib/action_controller/abstract/helpers.rb +++ b/actionpack/lib/action_controller/abstract/helpers.rb @@ -24,11 +24,30 @@ module AbstractController super end - + + # Makes all the (instance) methods in the helper module available to templates rendered through this controller. + # See ActionView::Helpers (link:classes/ActionView/Helpers.html) for more about making your own helper modules + # available to the templates. def add_template_helper(mod) master_helper_module.module_eval { include mod } end - + + # Declare a controller method as a helper. For example, the following + # makes the +current_user+ controller method available to the view: + # class ApplicationController < ActionController::Base + # helper_method :current_user, :logged_in? + # + # def current_user + # @current_user ||= User.find_by_id(session[:user]) + # end + # + # def logged_in? + # current_user != nil + # end + # end + # + # In a view: + # <% if logged_in? -%>Welcome, <%= current_user.name %><% end -%> def helper_method(*meths) meths.flatten.each do |meth| master_helper_module.class_eval <<-ruby_eval, __FILE__, __LINE__ + 1 @@ -39,14 +58,14 @@ module AbstractController end end - def helper(*args, &blk) + def helper(*args, &block) args.flatten.each do |arg| case arg when Module add_template_helper(arg) end end - master_helper_module.module_eval(&blk) if block_given? + master_helper_module.module_eval(&block) if block_given? end end |