diff options
Diffstat (limited to 'actionpack/lib/abstract_controller/helpers.rb')
| -rw-r--r-- | actionpack/lib/abstract_controller/helpers.rb | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/actionpack/lib/abstract_controller/helpers.rb b/actionpack/lib/abstract_controller/helpers.rb index d4e73bf257..df7382f02d 100644 --- a/actionpack/lib/abstract_controller/helpers.rb +++ b/actionpack/lib/abstract_controller/helpers.rb @@ -12,6 +12,20 @@ module AbstractController self._helper_methods = Array.new end + class MissingHelperError < LoadError + def initialize(error, path) + @error = error + @path = "helpers/#{path}.rb" + set_backtrace error.backtrace + + if error.path =~ /^#{path}(\.rb)?$/ + super("Missing helper file helpers/%s.rb" % path) + else + raise error + end + end + end + module ClassMethods # When a class is inherited, wrap its helper module in a new module. # This ensures that the parent class's module can be changed @@ -19,7 +33,7 @@ module AbstractController def inherited(klass) helpers = _helpers klass._helpers = Module.new { include helpers } - klass.class_eval { default_helper_module! unless anonymous? } + klass.class_eval { default_helper_module! } unless klass.anonymous? super end @@ -29,7 +43,7 @@ module AbstractController # helper_method :current_user, :logged_in? # # def current_user - # @current_user ||= User.find_by_id(session[:user]) + # @current_user ||= User.find_by(id: session[:user]) # end # # def logged_in? @@ -59,7 +73,7 @@ module AbstractController # The +helper+ class method can take a series of helper module names, a block, or both. # # ==== Options - # * <tt>*args</tt> - Module, Symbol, String, :all + # * <tt>*args</tt> - Module, Symbol, String # * <tt>block</tt> - A block defining helper methods # # When the argument is a module it will be included directly in the template class. @@ -113,7 +127,7 @@ module AbstractController # helpers with the following behavior: # # String or Symbol:: :FooBar or "FooBar" becomes "foo_bar_helper", - # and "foo_bar_helper.rb" is loaded using require_dependency. + # and "foo_bar_helper.rb" is loaded using require_dependency. # # Module:: No further processing # @@ -134,9 +148,19 @@ module AbstractController begin require_dependency(file_name) rescue LoadError => e - raise MissingHelperError.new(e, file_name) + raise AbstractController::Helpers::MissingHelperError.new(e, file_name) + end + + mod_name = file_name.camelize + begin + mod_name.constantize + rescue LoadError + # dependencies.rb gives a similar error message but its wording is + # not as clear because it mentions autoloading. To the user all it + # matters is that a helper module couldn't be loaded, autoloading + # is an internal mechanism that should not leak. + raise NameError, "Couldn't find #{mod_name}, expected it to be defined in helpers/#{file_name}.rb" end - file_name.camelize.constantize when Module arg else @@ -145,15 +169,6 @@ module AbstractController end end - class MissingHelperError < LoadError - def initialize(error, path) - @error = error - @path = "helpers/#{path}.rb" - set_backtrace error.backtrace - super("Missing helper file helpers/%s.rb" % path) - end - end - private # Makes all the (instance) methods in the helper module available to templates # rendered through this controller. |