diff options
Diffstat (limited to 'activemodel/lib/active_model/attribute_methods.rb')
| -rw-r--r-- | activemodel/lib/active_model/attribute_methods.rb | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/activemodel/lib/active_model/attribute_methods.rb b/activemodel/lib/active_model/attribute_methods.rb index 97a83e58af..846d0d7f86 100644 --- a/activemodel/lib/active_model/attribute_methods.rb +++ b/activemodel/lib/active_model/attribute_methods.rb @@ -28,7 +28,7 @@ module ActiveModel # attribute_method_affix :prefix => 'reset_', :suffix => '_to_default!' # attribute_method_suffix '_contrived?' # attribute_method_prefix 'clear_' - # define_attribute_methods ['name'] + # define_attribute_methods 'name' # # attr_accessor :name # @@ -86,7 +86,7 @@ module ActiveModel # include ActiveModel::AttributeMethods # attr_accessor :name # attribute_method_prefix 'clear_' - # define_attribute_methods [:name] + # define_attribute_methods :name # # private # @@ -124,7 +124,7 @@ module ActiveModel # include ActiveModel::AttributeMethods # attr_accessor :name # attribute_method_suffix '_short?' - # define_attribute_methods [:name] + # define_attribute_methods :name # # private # @@ -162,7 +162,7 @@ module ActiveModel # include ActiveModel::AttributeMethods # attr_accessor :name # attribute_method_affix :prefix => 'reset_', :suffix => '_to_default!' - # define_attribute_methods [:name] + # define_attribute_methods :name # # private # @@ -180,11 +180,23 @@ module ActiveModel undefine_attribute_methods end + + # Allows you to make aliases for attributes. + # + # class Person + # attr_accessor :name + # alias_attribute :nickname, :name + # end + # + # person = Person.new + # person.nickname = "Bob" + # person.nickname # => "Bob" + # person.name # => "Bob" def alias_attribute(new_name, old_name) attribute_method_matchers.each do |matcher| matcher_new = matcher.method_name(new_name).to_s matcher_old = matcher.method_name(old_name).to_s - define_optimized_call self, matcher_new, matcher_old + define_proxy_call false, self, matcher_new, matcher_old end end @@ -204,7 +216,7 @@ module ActiveModel # # Call to define_attribute_methods must appear after the # # attribute_method_prefix, attribute_method_suffix or # # attribute_method_affix declares. - # define_attribute_methods [:name, :age, :address] + # define_attribute_methods :name, :age, :address # # private # @@ -212,8 +224,8 @@ module ActiveModel # ... # end # end - def define_attribute_methods(attr_names) - attr_names.each { |attr_name| define_attribute_method(attr_name) } + def define_attribute_methods(*attr_names) + attr_names.flatten.each { |attr_name| define_attribute_method(attr_name) } end def define_attribute_method(attr_name) @@ -226,7 +238,7 @@ module ActiveModel if respond_to?(generate_method, true) send(generate_method, attr_name) else - define_optimized_call generated_attribute_methods, method_name, matcher.method_missing_target, attr_name.to_s + define_proxy_call true, generated_attribute_methods, method_name, matcher.method_missing_target, attr_name.to_s end end end @@ -243,11 +255,7 @@ module ActiveModel # Returns true if the attribute methods defined have been generated. def generated_attribute_methods #:nodoc: - @generated_attribute_methods ||= begin - mod = Module.new - include mod - mod - end + @generated_attribute_methods ||= Module.new.tap { |mod| include mod } end protected @@ -285,7 +293,7 @@ module ActiveModel # Define a method `name` in `mod` that dispatches to `send` # using the given `extra` args. This fallbacks `define_method` # and `send` if the given names cannot be compiled. - def define_optimized_call(mod, name, send, *extra) #:nodoc: + def define_proxy_call(include_private, mod, name, send, *extra) #:nodoc: if name =~ NAME_COMPILABLE_REGEXP defn = "def #{name}(*args)" else @@ -295,7 +303,7 @@ module ActiveModel extra = (extra.map(&:inspect) << "*args").join(", ") if send =~ CALL_COMPILABLE_REGEXP - target = "#{send}(#{extra})" + target = "#{"self." unless include_private}#{send}(#{extra})" else target = "send(:'#{send}', #{extra})" end |