ri > AbstractController::Caching::Fragments

= AbstractController::Caching::Fragments

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= Extended by:
ActiveSupport::Concern (from /home/chedong/.local/share/rdoc)

(from /home/chedong/.local/share/rdoc)
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Fragment caching is used for caching various blocks within views without
caching the entire action as a whole. This is useful when certain
elements of an action change frequently or depend on complicated state
while other parts rarely change or can be shared amongst multiple
parties. The caching is done using the cache helper available in the
Action View. See ActionView::Helpers::CacheHelper for more information.

While it's strongly recommended that you use key-based cache expiration
(see links in CacheHelper for more information), it is also possible to
manually expire caches. For example:

  expire_fragment('name_of_cache')
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= Instance methods:

  combined_fragment_cache_key
  expire_fragment
  fragment_exist?
  read_fragment
  write_fragment