diff options
Diffstat (limited to 'activerecord/lib/active_record/attributes.rb')
| -rw-r--r-- | activerecord/lib/active_record/attributes.rb | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/activerecord/lib/active_record/attributes.rb b/activerecord/lib/active_record/attributes.rb index 2c475f3cda..c8979a60d7 100644 --- a/activerecord/lib/active_record/attributes.rb +++ b/activerecord/lib/active_record/attributes.rb @@ -102,14 +102,14 @@ module ActiveRecord # # Users may also define their own custom types, as long as they respond # to the methods defined on the value type. The method - # +type_cast_from_database+ or +type_cast_from_user+ will be called on + # +deserialize+ or +cast+ will be called on # your type object, with raw input from the database or from your # controllers. See ActiveRecord::Type::Value for the expected API. It is # recommended that your type objects inherit from an existing type, or # from ActiveRecord::Type::Value # # class MoneyType < ActiveRecord::Type::Integer - # def type_cast_from_user(value) + # def cast(value) # if value.include?('$') # price_in_dollars = value.gsub(/\$/, '').to_f # super(price_in_dollars * 100) @@ -119,21 +119,27 @@ 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 # # When ActiveRecord::QueryMethods#where is called, it will # use the type defined by the model class to convert the value to SQL, - # calling +type_cast_for_database+ on your type object. For example: + # calling +serialize+ on your type object. For example: # # class Money < Struct.new(:amount, :currency) # end @@ -143,18 +149,20 @@ module ActiveRecord # @currency_converter = currency_converter # end # - # # value will be the result of +type_cast_from_database+ or - # # +type_cast_from_user+. Assumed to be in instance of +Money+ in + # # value will be the result of +deserialize+ or + # # +cast+. Assumed to be in instance of +Money+ in # # this case. - # def type_cast_for_database(value) + # def serialize(value) # value_in_bitcoins = @currency_converter.convert_to_bitcoins(value) # value_in_bitcoins.amount # 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")) @@ -195,7 +203,7 @@ module ActiveRecord # Otherwise, the default will be +nil+. # # +user_provided_default+ Whether the default value should be cast using - # +type_cast_from_user+ or +type_cast_from_database+. + # +cast+ or +deserialize+. def define_attribute( name, cast_type, @@ -210,7 +218,7 @@ module ActiveRecord super attributes_to_define_after_schema_loads.each do |name, (type, options)| if type.is_a?(Symbol) - type = connection.type_for_attribute_options(type, **options.except(:default)) + type = ActiveRecord::Type.lookup(type, **options.except(:default)) end define_attribute(name, type, **options.slice(:default)) |