method

cache_key

v5.2.3 - Show latest stable - Class: ActiveRecord::Integration

cache_key(*timestamp_names)

public

Returns a stable cache key that can be used to identify this record.

Product.new.cache_key     # => "products/new"
Product.find(5).cache_key # => "products/5"

If ActiveRecord::Base.cache_versioning is turned off, as it was in Rails 5.1 and earlier, the cache key will also include a version.

Product.cache_versioning = false
Person.find(5).cache_key  # => "people/5-20071224150000" (updated_at available)

# File activerecord/lib/active_record/integration.rb, line 64
    def cache_key(*timestamp_names)
      if new_record?
        "#{model_name.cache_key}/new"
      else
        if cache_version && timestamp_names.none?
          "#{model_name.cache_key}/#{id}"
        else
          timestamp = if timestamp_names.any?
            ActiveSupport::Deprecation.warn(              Specifying a timestamp name for #cache_key has been deprecated in favor of              the explicit #cache_version method that can be overwritten..squish)

            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
    end

cache_key

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