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-rw-r--r--activemodel/lib/active_model/attribute_methods.rb18
1 files changed, 8 insertions, 10 deletions
diff --git a/activemodel/lib/active_model/attribute_methods.rb b/activemodel/lib/active_model/attribute_methods.rb
index b5c0b43b61..888a431e5f 100644
--- a/activemodel/lib/active_model/attribute_methods.rb
+++ b/activemodel/lib/active_model/attribute_methods.rb
@@ -1,5 +1,6 @@
+# frozen_string_literal: true
+
require "concurrent/map"
-require "mutex_m"
module ActiveModel
# Raised when an attribute is not defined.
@@ -68,9 +69,8 @@ module ActiveModel
CALL_COMPILABLE_REGEXP = /\A[a-zA-Z_]\w*[!?]?\z/
included do
- class_attribute :attribute_aliases, :attribute_method_matchers, instance_writer: false
- self.attribute_aliases = {}
- self.attribute_method_matchers = [ClassMethods::AttributeMethodMatcher.new]
+ class_attribute :attribute_aliases, instance_writer: false, default: {}
+ class_attribute :attribute_method_matchers, instance_writer: false, default: [ ClassMethods::AttributeMethodMatcher.new ]
end
module ClassMethods
@@ -328,13 +328,11 @@ module ActiveModel
attribute_method_matchers_cache.clear
end
- def generated_attribute_methods #:nodoc:
- @generated_attribute_methods ||= Module.new {
- extend Mutex_m
- }.tap { |mod| include mod }
- end
-
private
+ def generated_attribute_methods
+ @generated_attribute_methods ||= Module.new.tap { |mod| include mod }
+ end
+
def instance_method_already_implemented?(method_name)
generated_attribute_methods.method_defined?(method_name)
end