#152 Rails 2.3 Extras

Railscasts - Rails 2.3 Extras:

# find in batches Product.count Product.find_in_batches(:batch_size => 10) do |batch| puts "Products in batch: #{batch.size}" end Product.each(:batch_size => 10) do |product| puts product.name end # scoped_by Product.scoped_by_price(4.99).size Product.scoped_by_price(4.99).first Product.scoped_by_price(4.99).scoped_by_category_id(3).first # try method Product.find_by_price(4.99).name Product.find_by_price(4.95).name Product.find_by_price(4.95).try(:name) Product.find_by_price(4.99).try(:name)

Full article: http://railscasts.com/episodes/152-rails-2-3-extras