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Contents
module BetterRecord
module Batches
def split_batches(options = {}, &block)
options.assert_valid_keys(:start, :batch_size, :preserve_order)
if block_given? && arel.orders.present? && options[:preserve_order]
relation = self
offset = options[:start] || 0
batch_size = options[:batch_size] || 1000
total = relation.count(:*)
records = relation.limit(batch_size).offset(offset).to_a
while records.any?
records_size = records.size
block.call records
break if records_size < batch_size
offset += batch_size
records = relation.limit(batch_size).offset(offset).to_a
end
nil
else
find_in_batches(options.except(:preserve_order), &block)
end
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems