Global Scope based on Subdomain

rubyonrails-talk
1

Hi, I'm a noob trying to figure out the best way to limit queries by a particular condition that is dependent on the subdomain of the site.

I have a table "places" with a field called "subdomain". Say I have another table that belongs to places called "knights" (contains "place_id"). Like so:

`places` table - Place.id, Place.subdomain `knights` table - Knight.id, Knight.place_id

On the site, "heredia.knightsofni.es", I only want to show the knights who live in Heredia wherever knights are shown.

My questions are these:

1. What is the best way to set the "active" place globally? Right now I am setting an instance variable @active_place in application_controller.rb like so: @active_place = Place.find (:first, :conditions => ['places = ?', subdomain]). Is this OK, or is there a better way so that the @active_place data is more globally available?

2. How can I constrain by place while staying RESTful? Right now I'm putting if/then statements in my controller methods like so: if @active_place { @knights = Knight.by_place } else { @knights = Knight.all }

Thanks for the help, Ni!

2

Basically I need a default_scope that constrains by kingdom. Is there some way to do something like this?:

class Knight < ActiveRecord::Base   belongs_to :kingdom   default_scope :include => :kingdom, :conditions => ['kingdoms.subdomain = ?', current_subdomain] ...

But I see no way of getting the current subdomain inside the model.

Thanks (Ni!)