On Sun, Apr 10, 2011 at 9:51 AM, Matt Jones <[email protected]> wrote:

>
>
> On Apr 9, 11:37 pm, David Kahn <[email protected]> wrote:
> > Is there a different way to do such an eval? In actuality what I am doing
> > with this phrase is to assign hash params to the attributes of a class:
> >
> > eval("background_process_status.#{key.to_s}='#{value}'")
>
> I'd *highly* recommend that you not do this. Using send is not only
> more efficient, it's far safer - for instance, what happens if
> somebody sends your code a value like
>
> '; `rm -rf *`;'
>
> This will be syntactically valid, and will make quite a mess...
>

Thanks all... yeah, I will use send, I forgot about that and you are right,
it gets yucky very fast when things like single quotes and who knows what
else get added.

Also, on this answer: eval("assigned_string=#{name}") , no it does not work,
this is what I had originally but if you output the internal string it looks
like "assigned_string=david" which of course errors out unless what is in
'name' is a non string type.



>
> --Matt Jones
>
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