instance method `mattr_reader`

Ruby on Rails 4.0.13

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

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mattr_reader(*syms)

No documentation comment.

Parameters

syms rest

Source

# File activesupport/lib/active_support/core_ext/module/attribute_accessors.rb, line 4
  def mattr_reader(*syms)
    options = syms.extract_options!
    syms.each do |sym|
      raise NameError.new('invalid attribute name') unless sym =~ /^[_A-Za-z]\w*$/
      class_eval(<<-EOS, __FILE__, __LINE__ + 1)
        @@#{sym} = nil unless defined? @@#{sym}

        def self.#{sym}
          @@#{sym}
        end
      EOS

      unless options[:instance_reader] == false || options[:instance_accessor] == false
        class_eval(<<-EOS, __FILE__, __LINE__ + 1)
          def #{sym}
            @@#{sym}
          end
        EOS
      end
    end
  end

Defined in activesupport/lib/active_support/core_ext/module/attribute_accessors.rb line 4 · View on GitHub · Improve this page · Find usages on GitHub

Defined in Module

Signature

Parameters