method

set_content_length!

v2.2.1 - Show latest stable - Class: ActionController::AbstractResponse

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 184
      def set_content_length!
        unless body.respond_to?(:call) || (status && status[0..2] == '304')
          self.headers["Content-Length"] ||= body.size
        end
      end

set_content_length!

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