From: Alex Stahl <astahl@...5.com>
Date: 2010-07-12T06:41:04+09:00
Subject: Re: How to pass a hash as a param to a method called through eval?

Thanks.  You're actually the second response to suggest doing it that
way (w/ eval).  But it doesn't work for me.

Though, the first respondent is using 1.9.1, and I've got 1.8.7 at the
moment.  Are you by chance also on 1.9.1?

-Alex

On Sun, 2010-07-11 at 16:05 -0500, yermej wrote:
> On Jul 11, 2:57 pm, Alex Stahl <ast...@hi5.com> wrote:
> [...]
> > Problem is that 'call['params']' is treated as a string by the receiver,
> > not the hash I intended to pass.  Tried using casting operations first,
> > like .to_s and then .to_hash, but the to_hash call fails w/ no method
> > error.  Instead the hash comes through as a string.  How can I pass it
> > so that it remains a hash, and retains its structure for key/val reading
> > in the receiver?
> >
> 
> This will do it:
> 
> eval("#{call['action']}(call['params'])")
> 
> Depending on context, you can probably completely avoid using eval:
> 
> method(call['action']).call(call['params'])
> 
> When you use #{call['params']}, I think that calls #to_s on the Hash
> which causes what you're seeing.
> 
> Jeremy
>