@@ -133,6 +133,7 @@ module ActiveRecord end private + # Suffixes a, ?, c become regexp /(a|\?|c)$/ def rebuild_attribute_method_regexp suffixes = attribute_method_suffixes.map { |s| Regexp.escape(s) } @@ -238,19 +239,17 @@ module ActiveRecord def method_missing(method_id, *args, &block) method_name = method_id.to_s - if self.class.private_method_defined?(method_name) - raise NoMethodError.new("Attempt to call private method", method_name, args) - end - # If we haven't generated any methods yet, generate them, then # see if we've created the method we're looking for. if !self.class.generated_methods? self.class.define_attribute_methods + guard_private_attribute_method!(method_name, args) if self.class.generated_methods.include?(method_name) return self.send(method_id, *args, &block) end end + guard_private_attribute_method!(method_name, args) if self.class.primary_key.to_s == method_name id elsif md = self.class.match_attribute_method?(method_name) @@ -371,6 +370,12 @@ module ActiveRecord end private + # prevent method_missing from calling private methods with #send + def guard_private_attribute_method!(method_name, args) + if self.class.private_method_defined?(method_name) + raise NoMethodError.new("Attempt to call private method", method_name, args) + end + end def missing_attribute(attr_name, stack) raise ActiveRecord::MissingAttributeError, "missing attribute: #{attr_name}", stack activerecord/lib/active_record/attribute_methods.rb @@ -277,6 +277,22 @@ class AttributeMethodsTest < ActiveRecord::TestCase assert_raise(ActiveRecord::UnknownAttributeError) { @target.new.attributes = { :title => "Ants in pants" } } end + def test_read_attribute_overwrites_private_method_not_considered_implemented + # simulate a model with a db column that shares its name an inherited + # private method (e.g. Object#system) + # + Object.class_eval do + private + def title; "private!"; end + end + assert !@target.instance_method_already_implemented?(:title) + topic = @target.new + assert_equal nil, topic.title + + Object.send(:undef_method, :title) # remove test method from object + end + + private def time_related_columns_on_topic Topic.columns.select{|c| [:time, :date, :datetime, :timestamp].include?(c.type)}.map(&:name) activerecord/test/cases/attribute_methods_test.rb 579250ea467ac406a5897dc2187c7959bf343b4f Sam Goldstein sgrock@gmail.com http://github.com/rails/rails/commit/d60d7edce462f4602bfc9996689087a235b034c9 d60d7edce462f4602bfc9996689087a235b034c9 2009-07-08T21:44:30-07:00 2009-07-08T11:45:26-07:00 Make it so AR attributes which conflict with object-private methods (e.g. system) don't 'randomly' cause NoMethodErrors Previously if you called this attribute before others, you'd get exceptions. But if it was the second-or-subsequent attribute you retrieved you'd get the correct behaviour. Signed-off-by: Michael Koziarski <michael@koziarski.com> [#2808 state:committed] b56c9b8d07a87959fb8fbd746450537e46690ffb Michael Koziarski michael@koziarski.com