instance method `cache_key`

Ruby on Rails 5.2.8.1

Since v3.2.22.5

Available in: v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 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

Compare with:

cache_key(*timestamp_names)

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)

Parameters

timestamp_names rest

Source

# 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(<<-MSG.squish)
              Specifying a timestamp name for #cache_key has been deprecated in favor of
              the explicit #cache_version method that can be overwritten.
            MSG

            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

Defined in activerecord/lib/active_record/integration.rb line 64 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Integration

Signature

Parameters