Methods
Instance Public methods
exec_queries() Link
When this module is prepended to ActiveRecord::Relation
and config.active_record.warn_on_records_fetched_greater_than
is set to an integer, if the number of records a query returns is greater than the value of warn_on_records_fetched_greater_than
, a warning is logged. This allows for the detection of queries that return a large number of records, which could cause memory bloat.
In most cases, fetching large number of records can be performed efficiently using the ActiveRecord::Batches
methods. See ActiveRecord::Batches
for more information.
# File activerecord/lib/active_record/relation/record_fetch_warning.rb, line 16 def exec_queries QueryRegistry.reset super.tap do |records| if logger && warn_on_records_fetched_greater_than if records.length > warn_on_records_fetched_greater_than logger.warn "Query fetched #{records.size} #{@klass} records: #{QueryRegistry.queries.join(";")}" end end end end