diff options
Diffstat (limited to 'activemodel/lib/active_model/attribute_methods.rb')
| -rw-r--r-- | activemodel/lib/active_model/attribute_methods.rb | 61 |
1 files changed, 2 insertions, 59 deletions
diff --git a/activemodel/lib/active_model/attribute_methods.rb b/activemodel/lib/active_model/attribute_methods.rb index e69cb5c459..71ab1501c8 100644 --- a/activemodel/lib/active_model/attribute_methods.rb +++ b/activemodel/lib/active_model/attribute_methods.rb @@ -61,69 +61,12 @@ module ActiveModel CALL_COMPILABLE_REGEXP = /\A[a-zA-Z_]\w*[!?]?\z/ included do - class_attribute :attribute_method_matchers, :instance_writer => false + extend ActiveModel::Configuration + config_attribute :attribute_method_matchers self.attribute_method_matchers = [ClassMethods::AttributeMethodMatcher.new] end module ClassMethods - # Defines an "attribute" method (like +inheritance_column+ or +table_name+). - # A new (class) method will be created with the given name. If a value is - # specified, the new method will return that value (as a string). - # Otherwise, the given block will be used to compute the value of the - # method. - # - # The original method will be aliased, with the new name being prefixed - # with "original_". This allows the new method to access the original - # value. - # - # Example: - # - # class Person - # - # include ActiveModel::AttributeMethods - # - # cattr_accessor :primary_key - # cattr_accessor :inheritance_column - # - # define_attr_method :primary_key, "sysid" - # define_attr_method( :inheritance_column ) do - # original_inheritance_column + "_id" - # end - # - # end - # - # Provides you with: - # - # Person.primary_key - # # => "sysid" - # Person.inheritance_column = 'address' - # Person.inheritance_column - # # => 'address_id' - def define_attr_method(name, value=nil, &block) - sing = singleton_class - sing.class_eval <<-eorb, __FILE__, __LINE__ + 1 - if method_defined?('original_#{name}') - undef :'original_#{name}' - end - alias_method :'original_#{name}', :'#{name}' - eorb - if block_given? - sing.send :define_method, name, &block - else - # If we can compile the method name, do it. Otherwise use define_method. - # This is an important *optimization*, please don't change it. define_method - # has slower dispatch and consumes more memory. - if name =~ NAME_COMPILABLE_REGEXP - sing.class_eval <<-RUBY, __FILE__, __LINE__ + 1 - def #{name}; #{value.nil? ? 'nil' : value.to_s.inspect}; end - RUBY - else - value = value.to_s if value - sing.send(:define_method, name) { value } - end - end - end - # Declares a method available for all attributes with the given prefix. # Uses +method_missing+ and <tt>respond_to?</tt> to rewrite the method. # |