From: Alan Chen <alan@...>
Date: 2002-02-21T04:01:25+09:00
Subject: Re: including files in eruby

On Thu, Feb 21, 2002 at 03:33:29AM +0900, Paul Brannan wrote:
> On Thu, Feb 21, 2002 at 03:26:44AM +0900, Alan Chen wrote:
> > I've just been require'ing the files as normal ruby code. I've been
> > prototyping an ruby based web application and use requires to separate
> > the ruby application logic from the eruby presentation code.
> 
> I don't know if this is the "best" way, but I've been doing something
> like this:
> 
> myfile.cgi:
>   File.open('myfile.rhtml') do |input|
>     eval <<-END
>       MY_TEMPLATE = proc { |var1, var2, var3|
>         #{ERuby::Compiler.new.compile_string(input.read())}
>       }
>     END
>   end
> 
>   MY_TEMPLATE.call(1, 2, 3)
> 
> myfile.rhtml:
>   <html>
>     <body>
>       <%= var1 %><br>
>       <%= var2 %><br>
>       <%= var3 %><br>
>     </body>
>   </html>
> 
> Paul

Actually, I've been using mod_ruby too so I just have the rhtml file. :)
Its not perfect separation of logic and presentation, but eruby lets
me draw the line between the two wherever I'd like.

Generally it goes something like this

<html>
  <%
    require 'opencds' # the name of my web app
    require 'cgi'

    # occasionally there is page-specific logic here
    cgi = CGI.new
    case_record = OpenCDS::Case.new(cgi.params['case_id'])
  %>

  <body>
    <h1>Case ID: <%=case_record.id%></h1>
  </body>
</html>


Somewhere in my load path I have ruby code as follows

opencds.rb:

module OpenCDS
  class Case
    def initialize(case_id)
      #validate case id, retreive stuff from database
    end
  end
end


-- 
Alan Chen
Digikata LLC
http://digikata.com