Screencast: Subdomains in Rails 3

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Resourcen:

• Episode 123: Subdomains
• smackaho.st
• Full episode source code

Quellcode:

[ruby] # routes.rb constraints(Subdomain) do match ’/’ => ‘blogs#show’ end

# lib/subdomain.rb class Subdomain def self.matches?(request) request.subdomain.present? && request.subdomain != “www” end end

# app/helpers/url_helper.rb module UrlHelper def with_subdomain(subdomain) subdomain = (subdomain || "") subdomain += ”.” unless subdomain.empty? [subdomain, request.domain, request.port_string].join end def url_for(options = nil) if options.kind_of?(Hash) && options.has_key?(:subdomain) options[:host] = with_subdomain(options.delete(:subdomain)) end super end end

# application_controller.rb include UrlHelper

# config/initializers/session_store.rb # requires Rails 3.0 RC or head Rails.application.config.session_store :cookie_store, :key => ‘_blogs_session’, :domain => :all

# change top level domain size request.domain(2) request.subdomain(2) Rails.application.config.session_store :cookie_store, :key => ‘_blogs_session’, :domain => “example.co.uk” [/ruby]

[html] <%= link_to blog.name, root_url(:subdomain => blog.subdomain) %>

<%= link\_to "All Blogs", root\_url(:subdomain => false) %> \[/html\]