Rails - Jul 2009 - Evaluating Ruby code that is in a sting, how do I do it?

Hello there,

I have a code like.

...
items = entries.map { |entry| content_tag("li", mask, :id =>
"#{entry.id}")}
...

I want to evaluate the ruby code in the string mask on the fly... it
content is:
"#{entry.name} - #{entry.state.name}/#{entry.country.name}"

I have tried "eval mask" but with no success.

thanks,
David Sousa
-- 
Posted via http://www.ruby-forum.com/.

On Jul 21, 3:47 pm, David Sousa
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> Hello there,
>
> I have a code like.
>
> ...
> items = entries.map { |entry| content_tag("li", mask, :id =>
> "#{entry.id}")}
> ...
>
> I want to evaluate the ruby code in the string mask on the fly... it
> content is:
> "#{entry.name} - #{entry.state.name}/#{entry.country.name}"
>
> I have tried "eval mask" but with no success.
>
Well eval is the method that evaluates code for you. In what way did
it not work ?

Fred
> thanks,
> David Sousa
> --
> Posted viahttp://www.ruby-forum.com/.

When I try to do:

items = entries.map { |entry| content_tag("li",
"#{eval(mask)}", :id =>
"#{entry.id}")}

or

items = entries.map { |entry| content_tag("li", eval(mask), :id => 
"#{entry.id}")}

I get nil as result.

David Sousa

-- 
Posted via http://www.ruby-forum.com/.

Hello,
> 
> I get nil as result.
> 
I was constructing the string in a wrong way.

The cold should look like this for the :with option:

:with => "value + ''&search='' + element.value +
''&field='' + ''name'' +
''&mask='' + ''entry.name \+ \" - \" \+ 
entry.state.name\+\"\/\"\+entry.country.name''"

Regards,

David Sousa
-- 
Posted via http://www.ruby-forum.com/.