From: Daniel N <has.sox@...>
Date: 2007-08-01T15:45:47+09:00
Subject: Re: Dynamic method call

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On 8/1/07, Andrea Maschio <andrea.maschio@gmail.com> wrote:
>
> I'm trying, for the purpose of making something similar to a grammar, to
> do
> this
>
> if_a_condition_is_true(condition, "method_name(arg1, arg2)")
>
> where
>
> def method_name(arg1, arg2)
> #do something
> end
>
> i've tried many way to implement
>
> def if_condition_is_true(condition , action)
> #such as
> eval(action)
> #or
> call self.method(action)
>
> end
>
> but noone worked, i've trying googling a bit but no chances. Have you got
> an
> idea on how to call dynamically a method, with his arguments?
>
> Thanks a lot folks
>
> --
>
> Andrea Maschio
>
> http://www.superandrew.it
>
> A clever person solves a problem.
> A wise person avoids it.
>
> Einstein



To call an arbitrary method on an object use send

object.send( :method_name_as_symbol [, arg1, arg2 ...] )

You can put that in an if statement etc or use

object.send( :method ) if some_condition_is_true

HTH
Daniel

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