Flowdock
method

cache_version

Importance_1
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cache_version() public

Returns a cache version that can be used together with the cache key to form a recyclable caching scheme. By default, the #updated_at column is used for the cache_version, but this method can be overwritten to return something else.

Note, this method will return nil if ActiveRecord::Base.cache_versioning is set to false (which it is by default until Rails 6.0).

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