method
cache_key
v6.1.3.1 -
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Class: ActiveRecord::Relation
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- What's this?
cache_key(timestamp_column = "updated_at")
public
Returns a stable cache key that can be used to identify this query. The cache key is built with a fingerprint of the SQL query.
Product.where("name like ?", "%Cosmic Encounter%").cache_key # => "products/query-1850ab3d302391b85b8693e941286659"
If ActiveRecord::Base.collection_cache_versioning is turned off, as it was in Rails 6.0 and earlier, the cache key will also include a version.
ActiveRecord::Base.collection_cache_versioning = false Product.where("name like ?", "%Cosmic Encounter%").cache_key # => "products/query-1850ab3d302391b85b8693e941286659-1-20150714212553907087000"
You can also pass a custom timestamp column to fetch the timestamp of the last updated record.
Product.where("name like ?", "%Game%").cache_key(:last_reviewed_at)