# File lib/rabl/engine.rb, line 333 def format_json(json_output) unless json_output.is_a?(String) json_engine = Rabl.configuration.json_engine json_output = if json_engine.respond_to?(:dump) json_engine.dump(json_output) else json_engine.encode(json_output) end end use_callback = Rabl.configuration.enable_json_callbacks && request_params[:callback].present? json_output = "#{request_params[:callback]}(#{json_output})" if use_callback json_output end