Method: CarrierWave::Storage::Fog::File#public_url

Defined in:
lib/carrierwave/storage/fog.rb

#public_url ⇒ Object

Return a url to a public file, if available

Returns

String

public url

or
NilClass

no public url available



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# File 'lib/carrierwave/storage/fog.rb', line 365

def public_url
  encoded_path = encode_path(path)
  if (host = @uploader.asset_host)
    if host.respond_to? :call
      "#{host.call(self)}/#{encoded_path}"
    else
      "#{host}/#{encoded_path}"
    end
  else
    # AWS/Google optimized for speed over correctness
    case fog_provider
    when 'AWS'
      # check if some endpoint is set in fog_credentials
      if @uploader.fog_credentials.has_key?(:endpoint)
        raise 'fog_aws_fips = true is incompatible with :endpoint, as FIPS endpoints do not support path-style URLs.' if @uploader.fog_aws_fips
        "#{@uploader.fog_credentials[:endpoint]}/#{@uploader.fog_directory}/#{encoded_path}"
      else
        protocol = @uploader.fog_use_ssl_for_aws ? "https" : "http"

        subdomain_regex = /^(?:[a-z]|\d(?!\d{0,2}(?:\d{1,3}){3}$))(?:[a-z0-9\.]|(?![\-])|\-(?![\.])){1,61}[a-z0-9]$/
        # To use the virtual-hosted style, the bucket name needs to be representable as a subdomain
        use_virtual_hosted_style = @uploader.fog_directory.to_s =~ subdomain_regex && !(protocol == 'https' && @uploader.fog_directory =~ /\./)

        region = @uploader.fog_credentials[:region].to_s
        regional_host = 's3.amazonaws.com' # used for DEFAULT_S3_REGION or no region set
        if @uploader.fog_aws_fips
          regional_host = "s3-fips.#{region}.amazonaws.com" # https://aws.amazon.com/compliance/fips/
        elsif ![DEFAULT_S3_REGION, ''].include?(region)
          regional_host = "s3.#{region}.amazonaws.com"
        end

        if use_virtual_hosted_style
          regional_host = 's3-accelerate.amazonaws.com' if @uploader.fog_aws_accelerate
          "#{protocol}://#{@uploader.fog_directory}.#{regional_host}/#{encoded_path}"
        else # directory is not a valid subdomain, so use path style for access
          raise 'FIPS Endpoints can only be used with Virtual Hosted-Style addressing.' if @uploader.fog_aws_fips
          "#{protocol}://#{regional_host}/#{@uploader.fog_directory}/#{encoded_path}"
        end
      end
    when 'Google'
      # https://cloud.google.com/storage/docs/access-public-data
      "https://storage.googleapis.com/#{@uploader.fog_directory}/#{encoded_path}"
    else
      # avoid a get by just using local reference
      directory.files.new(:key => path).public_url
    end
  end
end