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"@@class_var = 'some_value'" inside of ActiveSupport::Concern's 'included' does not work #610

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nbrustein opened this issue Mar 27, 2013 · 1 comment
Closed

"@@class_var = 'some_value'" inside of ActiveSupport::Concern's 'included' does not work #610

nbrustein opened this issue Mar 27, 2013 · 1 comment
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@nbrustein
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The following code will give different results when run in MRI vs. Jruby.

using:

  • jruby 1.7.3 (1.9.3p385) 2013-02-21 dac429b on Java HotSpot(TM) 64-Bit Server VM 1.6.0_37-b06-434-10M3909 [darwin-x86_64]
  • ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]

Code:

module Mod 

  extend ActiveSupport::Concern 

  included do 
    cattr_accessor :var
    @@var = 1
  end

end

class Super
  include Mod
end

class Sub < Super; end

puts Super.var
puts Sub.var


module Mod2 

  extend ActiveSupport::Concern 

  included do 
    cattr_accessor :var
    self.var = 1
  end

end

class Super2
  include Mod2
end

class Sub2 < Super2; end

puts Super2.var
puts Sub2.var

require 'pp'
pp({
  "Super" => Super.var,
  "Sub" => Sub.var,
  "Super2" => Super2.var,
  "Sub2" => Sub2.var
})
@BanzaiMan
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cattr_accessor is available if you require active_support/core_ext.

$ ruby -v; ruby -r active_support/core_ext gh-610.rb
ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-darwin12.2.1]
1
1
1
1
{"Super"=>1, "Sub"=>1, "Super2"=>1, "Sub2"=>1}

$ jruby -v; jruby -r active_support/core_ext gh-610.rb
jruby 1.7.4.dev (1.9.3p392) 2013-04-08 fd68f31 on Java HotSpot(TM) 64-Bit Server VM 1.7.0_17-b02 [darwin-x86_64]


1
1
{"Super"=>nil, "Sub"=>nil, "Super2"=>1, "Sub2"=>1}

@kares kares closed this as completed Jan 10, 2016
@kares kares added this to the Invalid or Duplicate milestone Jan 10, 2016
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@BanzaiMan @kares @nbrustein