method

set_content_length!

v2.3.8 - Show latest stable - Class: ActionController::Response

set_content_length!()

private

Don’t set the Content-Length for block-based bodies as that would mean reading it all into memory. Not nice for, say, a 2GB streaming file.

# File actionpack/lib/action_controller/response.rb, line 217
      def set_content_length!
        if status && status.to_s[0..2] == '204'
          headers.delete('Content-Length')
        elsif length = headers['Content-Length']
          headers['Content-Length'] = length.to_s
        elsif !body.respond_to?(:call) && (!status || status.to_s[0..2] != '304')
          headers["Content-Length"] = (body.respond_to?(:bytesize) ? body.bytesize : body.size).to_s
        end
      end

set_content_length!

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