over 11 years ago
We recently launch subdomain & custom domain features in our product: Logdown, a Markdown Blogging Platform.
People keep asking me how to implement, here is how :
(1) Constraint Routing
constraints(Subdomain) do
get '/' => 'posts#index'
resources :posts do
collection do
get :search
end
end
end
And in Subdomain class:
If it doesn't match logdown.com & www.logdown.com, then it goes straight to the constraint routing.
class Subdomain
def self.matches?(request)
case request.host
when Setting.host, "www.#{Setting.host}", nil
false
else
true
end
end
end
(2) Find Current Blog
In PostsController, we also build a method find_blog to find @current_blog.
The sequences will be : subdomain => custom domain => Not Found
class PostsController < ApplicationController
before_filter :find_blog
def find_blog
case request.host
when "www.#{Setting.host}", Setting.host, nil
else
if request.host.index(Setting.host)
@current_blog = Blog.find_by_subdomain(request.host.split('.').first)
else
@current_blog = Blog.find_by_fqdn(request.host)
end
if !@current_blog
redirect_to Setting.domain
end
end
end
end
(3) Nginx Setting
server {
listen 80 default;
.....
}
The code is very simple, but it tooks me lots of time to figure out...