method

subdomains

v3.0.9 - Show latest stable - 0 notes - Class: ActionDispatch::Http::URL

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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_dispatch/http/url.rb, line 88
      def subdomains(tld_length = 1)
        return [] unless named_host?(host)
        parts = host.split('.')
        parts[0..-(tld_length+2)]
      end

subdomains

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