POST

# File actionpack/lib/action_dispatch/http/request.rb, line 404
    def POST
      fetch_header("action_dispatch.request.request_parameters") do
        pr = parse_formatted_parameters(params_parsers) do |params|
          super || {}
        end
        pr = Request::Utils.set_binary_encoding(self, pr, path_parameters[:controller], path_parameters[:action])
        Request::Utils.check_param_encoding(pr)
        self.request_parameters = Request::Utils.normalize_encode_params(pr)
      end
    rescue Rack::Utils::ParameterTypeError, Rack::Utils::InvalidParameterError, Rack::QueryParser::ParamsTooDeepError, EOFError => e
      raise ActionController::BadRequest.new("Invalid request parameters: #{e.message}")
    end