From: Robert Klemme <shortcutter@...>
Date: 2010-12-05T21:50:21+09:00
Subject: Re: Better way to read property than using eval()?

On 05.12.2010 00:27, Matt Slay wrote:
> Is there a better way to read a property from a model if you have a
> string that contains the property name that you want to read?
>
> Here is what I am doing now:
>
>     eval('@tolerance2.' + @size[2])
>
> I create the @tolerance2 object by using a .find() in Rails, and I have
> the string value which the name of the property I need off of the model.
>
> I'm thinking there is a better Ruby way to do this.

How about:

x = @tolerance2.send(@size[2])

At least this is safer than using eval.  Just think what would happen if

@size[2] = 'to_s and system("rm -rf /")'

:-)

Kind regards

	robert

-- 
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