class ActionDispatch::Session::CacheStore
A session store that uses an ActiveSupport::Cache::Store to store the sessions. This store is most useful if you don’t store critical data in your sessions and you don’t need them to live for extended periods of time.
Options¶ ↑
-
cache
- The cache to use. If it is not specified,Rails.cache
will be used. -
expire_after
- The length of time a session will be stored before automatically expiring. By default, the:expires_in
option of the cache is used.
Public Class Methods
new(app, options = {})
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Calls superclass method
ActionDispatch::Session::Compatibility::new
# File lib/action_dispatch/middleware/session/cache_store.rb, line 16 def initialize(app, options = {}) @cache = options[:cache] || Rails.cache options[:expire_after] ||= @cache.options[:expires_in] super end
Public Instance Methods
delete_session(env, sid, options)
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Remove a session from the cache.
# File lib/action_dispatch/middleware/session/cache_store.rb, line 42 def delete_session(env, sid, options) @cache.delete(cache_key(sid.private_id)) @cache.delete(cache_key(sid.public_id)) generate_sid end
find_session(env, sid)
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Get a session from the cache.
# File lib/action_dispatch/middleware/session/cache_store.rb, line 23 def find_session(env, sid) unless sid && (session = get_session_with_fallback(sid)) sid, session = generate_sid, {} end [sid, session] end
write_session(env, sid, session, options)
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Set a session in the cache.
# File lib/action_dispatch/middleware/session/cache_store.rb, line 31 def write_session(env, sid, session, options) key = cache_key(sid.private_id) if session @cache.write(key, session, expires_in: options[:expire_after]) else @cache.delete(key) end sid end
Private Instance Methods
cache_key(id)
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Turn the session id into a cache key.
# File lib/action_dispatch/middleware/session/cache_store.rb, line 50 def cache_key(id) "_session_id:#{id}" end
get_session_with_fallback(sid)
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# File lib/action_dispatch/middleware/session/cache_store.rb, line 54 def get_session_with_fallback(sid) @cache.read(cache_key(sid.private_id)) || @cache.read(cache_key(sid.public_id)) end