In my pursuit yesterday to make add the desired functionality to ActionController (render string to string), I talked to bitsweat about this and he suggested that I just extend the class in my rails app.
So, I created a file in lib, called action_controller_ext.rb (a shim as he referred to it) and put this in the file:
require 'action_controller'
class ActionController::Base
def render_string_to_string(text = nil, type = "rhtml") #:doc:
add_variables_to_assigns
@template.render_template(type, text)
end
end
Then in environment.rb, I changed:
require 'action_controller'
to
require 'action_controller_ext'
Now, I can move my clients app around dev/test/live servers and not need to modify the actual Rails source code. (still would be nice if it did that though)