instance method `cache_version`

Ruby on Rails 5.2.8.1

Since v5.2.8.1

Available in: v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

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cache_version()

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).

Source

# File activerecord/lib/active_record/integration.rb, line 98
    def cache_version
      if cache_versioning && timestamp = try(:updated_at)
        timestamp.utc.to_s(:usec)
      end
    end

Defined in activerecord/lib/active_record/integration.rb line 98 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Integration

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