diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/class/attribute.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/class/attribute.rb | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/activesupport/lib/active_support/core_ext/class/attribute.rb b/activesupport/lib/active_support/core_ext/class/attribute.rb index e51ab9ddbc..6fa9967a28 100644 --- a/activesupport/lib/active_support/core_ext/class/attribute.rb +++ b/activesupport/lib/active_support/core_ext/class/attribute.rb @@ -44,7 +44,8 @@ class Class # Base.setting # => [] # Subclass.setting # => [:foo] # - # For convenience, a query method is defined as well: + # For convenience, an instance predicate method is defined as well. + # To skip it, pass <tt>instance_predicate: false</tt>. # # Subclass.setting? # => false # @@ -70,12 +71,13 @@ class Class def class_attribute(*attrs) options = attrs.extract_options! # double assignment is used to avoid "assigned but unused variable" warning - instance_reader = instance_reader = options.fetch(:instance_accessor, true) && options.fetch(:instance_reader, true) + instance_reader = options.fetch(:instance_accessor, true) && options.fetch(:instance_reader, true) instance_writer = options.fetch(:instance_accessor, true) && options.fetch(:instance_writer, true) + instance_predicate = options.fetch(:instance_predicate, true) attrs.each do |name| define_singleton_method(name) { nil } - define_singleton_method("#{name}?") { !!public_send(name) } + define_singleton_method("#{name}?") { !!public_send(name) } if instance_predicate ivar = "@#{name}" @@ -109,7 +111,7 @@ class Class self.class.public_send name end end - define_method("#{name}?") { !!public_send(name) } + define_method("#{name}?") { !!public_send(name) } if instance_predicate end attr_writer name if instance_writer |