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-rw-r--r--activerecord/lib/active_record/attributes.rb14
1 files changed, 11 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/attributes.rb b/activerecord/lib/active_record/attributes.rb
index 45a764bd5a..c8979a60d7 100644
--- a/activerecord/lib/active_record/attributes.rb
+++ b/activerecord/lib/active_record/attributes.rb
@@ -119,15 +119,21 @@ module ActiveRecord
# end
# end
#
+ # # config/initializers/types.rb
+ # ActiveRecord::Type.register(:money, MoneyType)
+ #
+ # # /app/models/store_listing.rb
# class StoreListing < ActiveRecord::Base
- # attribute :price_in_cents, MoneyType.new
+ # attribute :price_in_cents, :money
# end
#
# store_listing = StoreListing.new(price_in_cents: '$10.00')
# store_listing.price_in_cents # => 1000
#
# For more details on creating custom types, see the documentation for
- # ActiveRecord::Type::Value.
+ # ActiveRecord::Type::Value. For more details on registering your types
+ # to be referenced by a symbol, see ActiveRecord::Type.register. You can
+ # also pass a type object directly, in place of a symbol.
#
# ==== Querying
#
@@ -152,9 +158,11 @@ module ActiveRecord
# end
# end
#
+ # ActiveRecord::Type.register(:money, MoneyType)
+ #
# class Product < ActiveRecord::Base
# currency_converter = ConversionRatesFromTheInternet.new
- # attribute :price_in_bitcoins, MoneyType.new(currency_converter)
+ # attribute :price_in_bitcoins, :money, currency_converter
# end
#
# Product.where(price_in_bitcoins: Money.new(5, "USD"))