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Source Code

# File action_controller/cgi_process.rb, line 166
def stale_session_check!
  yield
rescue ArgumentError => argument_error
  if argument_error.message =~ %r{undefined class/module ([\w:]*\w)}
    begin
      # Note that the regexp does not allow $1 to end with a ':'
      $1.constantize
    rescue LoadError, NameError => const_error
      raise ActionController::SessionRestoreError, "Session contains objects whose class definition isn\\'t available.\nRemember to require the classes for all objects kept in the session.\n(Original exception: \#{const_error.message} [\#{const_error.class}])\n"
    end

    retry
  else
    raise
  end
end