method
send_file_headers!
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Class: DataStreaming
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send_file_headers!(options)
private
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# File actionpack/lib/action_controller/metal/data_streaming.rb, line 116 def send_file_headers!(options) type_provided = options.has_key?(:type) content_type = options.fetch(:type, DEFAULT_SEND_FILE_TYPE) self.content_type = content_type response.sending_file = true raise ArgumentError, ":type option required" if content_type.nil? if content_type.is_a?(Symbol) extension = Mime[content_type] raise ArgumentError, "Unknown MIME type #{options[:type]}" unless extension self.content_type = extension else if !type_provided && options[:filename] # If type wasn't provided, try guessing from file extension. content_type = Mime::Type.lookup_by_extension(File.extname(options[:filename]).downcase.delete(".")) || content_type end self.content_type = content_type end disposition = options.fetch(:disposition, DEFAULT_SEND_FILE_DISPOSITION) if disposition headers["Content-Disposition"] = ActionDispatch::Http::ContentDisposition.format(disposition: disposition, filename: options[:filename]) end headers["Content-Transfer-Encoding"] = "binary" end