Block doesn't work with `{ }`

Question

This one is working

[:dev1, :dev2, :dev3].each do |env|
  define_method "#{env.to_s}?" do  
    settings.environment == env
  end
end

but this is not

[:dev1, :dev2, :dev3].each do |env|
  define_method "#{env.to_s}?" { settings.environment == env }
end

it causes the error because of using { ... } syntax. why?

I think this should work without problem. Your context is in ruby-on-rails, right? I have edited the tags. — Boris Strandjev, Jan 06 '13 at 09:27
Similar http://stackoverflow.com/questions/5513531/ruby-do-end-vs-braces — asheeshr, Jan 06 '13 at 09:29
It is not solely Boris's fault. The question was confusing in including unnecessary things like `helpers`. Questions should be user friendly, not including anything unnecessary. — sawa, Jan 06 '13 at 10:46

score 8 · Accepted Answer · answered Jan 06 '13 at 09:26

8

It is probably because the method takes other arguments besides a block, and you're omitting parentheses.

Try it this way:

define_method("#{env.to_s}?") { settings.environment == env }

answered Jan 06 '13 at 09:26

Gosha A

1 Answers1