On Jul 22, 2009, at 6:24 PM, elliottg wrote:
> Should be simple but I can't eval a string as a method call. I have
> poked around online a fair amount to get to the bottom of this mundane
> task, with no results.
>
> I have a hash "fields" that contains a series of AR field names and an
> object called "news" which is an AR object with that has the field
> names that are coming in from the hash. I just want to assign the hash
> values to the same field value from the news object.
>
> I have tried all these variations but with no luck. Mostly just blows
> up with syntax errors.
>
>
> fields.each_pair {|key, value| news.eval("key") = value }
>
> fields.each_pair {|key, value| news."#{key}" = value }
>
> fields.each_pair {|key, value| "#{news.key}" = value }
>
> fields.each_pair {|key, value| "news.#{key} = #{value}" }
>
> fields.each_pair {|key, value| news.send key = value }
>
>
> How do I do this?
>
> Thanks, Elliott
news.update_attributes(fields)
but the syntax you were struggling to find is probably:
fields.each_pair {|key,value| news.send("#{key}=", value) }
-Rob
Rob Biedenharn http://agileconsultingllc.com
[email protected]
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