diff options
Diffstat (limited to 'activerecord/lib/active_record')
| -rw-r--r-- | activerecord/lib/active_record/collection_cache_key.rb | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/collection_cache_key.rb b/activerecord/lib/active_record/collection_cache_key.rb index 43784b70e3..1e1de1863a 100644 --- a/activerecord/lib/active_record/collection_cache_key.rb +++ b/activerecord/lib/active_record/collection_cache_key.rb @@ -7,17 +7,27 @@ module ActiveRecord if collection.loaded? size = collection.size if size > 0 - timestamp = collection.max_by(×tamp_column).public_send(timestamp_column) + timestamp = collection.max_by(×tamp_column)._read_attribute(timestamp_column) end else column_type = type_for_attribute(timestamp_column.to_s) column = "#{connection.quote_table_name(collection.table_name)}.#{connection.quote_column_name(timestamp_column)}" + select_values = "COUNT(*) AS #{connection.quote_column_name("size")}, MAX(%s) AS timestamp" - query = collection - .unscope(:select) - .select("COUNT(*) AS #{connection.quote_column_name("size")}", "MAX(#{column}) AS timestamp") - .unscope(:order) - result = connection.select_one(query) + if collection.limit_value || collection.offset_value + query = collection.spawn + query.select_values = [column] + subquery_alias = "subquery_for_cache_key" + subquery_column = "#{subquery_alias}.#{timestamp_column}" + subquery = query.arel.as(subquery_alias) + arel = Arel::SelectManager.new(query.engine).project(select_values % subquery_column).from(subquery) + else + query = collection.unscope(:order) + query.select_values = [select_values % column] + arel = query.arel + end + + result = connection.select_one(arel, nil, query.bound_attributes) if result.blank? size = 0 |