instance method
cache_key
Ruby on Rails 5.0.7.2
Since v3.2.22.5Signature
cache_key(*timestamp_names)Returns a cache key that can be used to identify this record.
Product.new.cache_key # => "products/new"
Product.find(5).cache_key # => "products/5" (updated_at not available)
Person.find(5).cache_key # => "people/5-20071224150000" (updated_at available)
You can also pass a list of named timestamps, and the newest in the list will be used to generate the key:
Person.find(5).cache_key(:updated_at, :last_reviewed_at)
Parameters
-
timestamp_namesrest
Source
# File activerecord/lib/active_record/integration.rb, line 55
def cache_key(*timestamp_names)
if new_record?
"#{model_name.cache_key}/new"
else
timestamp = if timestamp_names.any?
max_updated_column_timestamp(timestamp_names)
else
max_updated_column_timestamp
end
if timestamp
timestamp = timestamp.utc.to_s(cache_timestamp_format)
"#{model_name.cache_key}/#{id}-#{timestamp}"
else
"#{model_name.cache_key}/#{id}"
end
end
end
Defined in activerecord/lib/active_record/integration.rb line 55
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Defined in ActiveRecord::Integration