calling methods from an erb template?

rubyonrails-talk
1

Hi,

I am quite new to rails and ruby, and I have a little issue here: I want to write a helper method which generates some erb code, which I want to call and then eval from a template.

This is best illustrated with an example. I want a menu bar on a page like this:

--- in the erb template: --- <%   rails_code = do_menu_bar_with([:back, :delete, :comment]) %> <%= eval(rails_code) %> --- end ---

I know this is probably not working, a shitty approach and generally flawed, but that's basically what I need.

So now I have two questions, and I am happy for any answer :slight_smile: :

1. Where would I put this method "do_menu_bar_..."? it surely does not work in ApplicationController.

2. If this method returns erb code, how do I evaluate this after? Surely not with eval, I guess ...

Thanks in advance & greetings, Axel.

2

I can't possible tell you how to do that, whatever you're doing (which is, btw, vry unclear)

here's what you do, open YourControllerNameHelper.rb in the helpers folder

module YourControllerNameHelper.rb

def do_menu_bar #do processing return "text to render"

end

end

then you use

<%= do_menu_bar %>

Don't ever eval code in the view... just don't. Why would you want to do that anyway?