Flowdock
Ruby on Rails latest stable (v4.2.7) - 0 notes - Superclass: Object
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  • What's this?

Class deprecated or moved

This class is deprecated or moved on the latest stable version. The last existing version (v2.3.8) is shown here.

This cookie-based session store is the Rails default. Sessions typically contain at most a user_id and flash message; both fit within the 4K cookie size limit. Cookie-based sessions are dramatically faster than the alternatives.

If you have more than 4K of session data or don’t want your data to be visible to the user, pick another session store.

CookieOverflow is raised if you attempt to store more than 4K of data.

A message digest is included with the cookie to ensure data integrity: a user cannot alter his user_id without knowing the secret key included in the hash. New apps are generated with a pregenerated secret in config/environment.rb. Set your own for old apps you’re upgrading.

Session options:

  • :secret: An application-wide key string or block returning a string called per generated digest. The block is called with the CGI::Session instance as an argument. It’s important that the secret is not vulnerable to a dictionary attack. Therefore, you should choose a secret consisting of random numbers and letters and more than 30 characters. Examples:
      :secret => '449fe2e7daee471bffae2fd8dc02313d'
      :secret => Proc.new { User.current_user.secret_key }
    
  • :digest: The message digest algorithm used to verify session integrity defaults to ‘SHA1’ but may be any digest provided by OpenSSL, such as ‘MD5’, ‘RIPEMD160’, ‘SHA256’, etc.

To generate a secret key for an existing application, run "rake secret" and set the key in config/environment.rb.

Note that changing digest or secret invalidates all existing sessions!

Constants

MAX = 4096

SECRET_MIN_LENGTH = 30

DEFAULT_OPTIONS = { :key => '_session_id', :domain => nil, :path => "/", :expire_after => nil, :httponly => true

ENV_SESSION_KEY = "rack.session".freeze

ENV_SESSION_OPTIONS_KEY = "rack.session.options".freeze

HTTP_SET_COOKIE = "Set-Cookie".freeze

Attributes

Show files where this class is defined (1 file)
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