On Dec 1, 8:02 pm, Joe Blow <[EMAIL PROTECTED]> wrote:
> hello all, I was hoping someone could describe to me how this works.
>
> Say I have some block of code like this
>
> <% my_cool_block do %>
> <% my_var = 5 %>
> <%= some_helper_method "My var" %>
> <% end %>
>
> And in my helper
>
> def my_cool_block(&block)
> content = capture(&block)
> concat(content, block.binding)
> end
>
> def some_helper_method(text)
> "#{text} = #{my_var}
> end
>
> How can i get some_helper_method to 'know' about my_var which is in the
> scope of the my_cool_block block? And even better yet, how could I get
> the some_helper_method only to work when it is nested inside a
> my_cool_block block?
Well you could probably do it by messing around with bindings and eval
but that sounds like a sucky design. why not do something similar to
form_for, ie your my_cool_block method yields an object encapsulating
the state you want to share in its instance variables. usage could be
<% my_cool_block(5) do |helper| %>
<%= helper.some_helper_method "My var %>
<% end %>
you could do other stuff too, eg call helper.with_value(5) and for the
block passed to with_value, my_var would have value 5
Fred
>
> Let me know if I can clarify anything for you.
>
> Thanks!
> --
> Posted viahttp://www.ruby-forum.com/.
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