method

subdomain

v7.0.0 - Show latest stable - Class: ActionDispatch::Http::URL

subdomain(tld_length = @@tld_length)

public

Returns all the subdomains as a string, so "dev.www" would be returned for “dev.www.rubyonrails.org”. You can specify a different tld_length, such as 2 to catch "www" instead of "www.rubyonrails" in “www.rubyonrails.co.uk”.

# File actionpack/lib/action_dispatch/http/url.rb, line 337
      def subdomain(tld_length = @@tld_length)
        ActionDispatch::Http::URL.extract_subdomain(host, tld_length)
      end

subdomain

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