Action Dispatch

config.filter_parameters
config.filter_redirect

# 决定了报错时，是否直接在 Web 上显示错误堆栈信息
config.consider_all_requests_local

NilClass

:x_sendfile_header
:default_charset

TrueClass

:ip_spoofing_check
:show_exceptions
:perform_deep_munge
:always_write_cookie

FalseClass

:ignore_accept_header
:rack_cache

Fixnum

:tld_length

Hash

:rescue_templates
:rescue_responses
:default_headers

String

:http_auth_salt
:signed_cookie_salt
:encrypted_cookie_salt
:encrypted_signed_cookie_salt

Symbol

:cookies_serializer