In Rails, we know that the routes are the most important entry-point where we define the which url hits which controller. We also know how to define the resources and add some conditions to the routing.
In this post, I want to concentrate about how to go about complex route conditions and make it easy for you to write modular code.
Let's say that you have to write a condition that if the domain belongs to a given domain, route the root url to some other controller. You can accomplish it using the following snippets:
Here you are creating a class for the domain constraint and having the required method called matches? which does the computing on the fly.
class DomainConstraint def initialize(domain) @domains = [domain].flatten end def matches?(request) @domains.include? request.domain end end
Now you add the code to the routes.rb as following:
constraints DomainConstraint.new('mydomain.com') do root :to => 'mydomain#index' end
The above code makes sure that the requests coming to a mydomain.com will have a root url at the mydomain controller and index action!