method

subdomains

v2.3.8 - Show latest stable - 0 notes - Class: ActionController::Request

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subdomains(tld_length = 1) public

Returns all the \subdomains as an array, 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";.

Show source

# File actionpack/lib/action_controller/request.rb, line 330
    def subdomains(tld_length = 1)
      return [] unless named_host?(host)
      parts = host.split('.')
      parts[0..-(tld_length+2)]
    end

subdomains

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