diff options
Diffstat (limited to 'activerecord/lib/active_record/collection_cache_key.rb')
-rw-r--r-- | activerecord/lib/active_record/collection_cache_key.rb | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/activerecord/lib/active_record/collection_cache_key.rb b/activerecord/lib/active_record/collection_cache_key.rb deleted file mode 100644 index 4b6db8a96c..0000000000 --- a/activerecord/lib/active_record/collection_cache_key.rb +++ /dev/null @@ -1,53 +0,0 @@ -# frozen_string_literal: true - -module ActiveRecord - module CollectionCacheKey - def collection_cache_key(collection = all, timestamp_column = :updated_at) # :nodoc: - query_signature = ActiveSupport::Digest.hexdigest(collection.to_sql) - key = "#{collection.model_name.cache_key}/query-#{query_signature}" - - if collection.loaded? || collection.distinct_value - size = collection.records.size - if size > 0 - timestamp = collection.max_by(×tamp_column)._read_attribute(timestamp_column) - end - else - if collection.eager_loading? - collection = collection.send(:apply_join_dependency) - end - column_type = type_for_attribute(timestamp_column) - column = connection.visitor.compile(collection.arel_attribute(timestamp_column)) - select_values = "COUNT(*) AS #{connection.quote_column_name("size")}, MAX(%s) AS timestamp" - - if collection.has_limit_or_offset? - query = collection.select("#{column} AS collection_cache_key_timestamp") - subquery_alias = "subquery_for_cache_key" - subquery_column = "#{subquery_alias}.collection_cache_key_timestamp" - subquery = query.arel.as(subquery_alias) - arel = Arel::SelectManager.new(subquery).project(select_values % subquery_column) - else - query = collection.unscope(:order) - query.select_values = [select_values % column] - arel = query.arel - end - - result = connection.select_one(arel, nil) - - if result.blank? - size = 0 - timestamp = nil - else - size = result["size"] - timestamp = column_type.deserialize(result["timestamp"]) - end - - end - - if timestamp - "#{key}-#{size}-#{timestamp.utc.to_s(cache_timestamp_format)}" - else - "#{key}-#{size}" - end - end - end -end |