method

extract_subdomains

rails latest stable - Class: ActionDispatch::Http::URL

extract_subdomains(host, tld_length)

public

Returns the subdomains of a host as an Array given the domain level.

# Top-level domain example
extract_subdomains('www.example.com', 1) # => ["www"]
# Second-level domain example
extract_subdomains('dev.www.example.co.uk', 2) # => ["dev", "www"]

# File actionpack/lib/action_dispatch/http/url.rb, line 32
        def extract_subdomains(host, tld_length)
          if named_host?(host)
            extract_subdomains_from(host, tld_length)
          else
            []
          end
        end

extract_subdomains

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