diff options
Diffstat (limited to 'activerecord/lib/active_record/attribute.rb')
-rw-r--r-- | activerecord/lib/active_record/attribute.rb | 53 |
1 files changed, 48 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/attribute.rb b/activerecord/lib/active_record/attribute.rb index 8cc1904575..73dd3fa041 100644 --- a/activerecord/lib/active_record/attribute.rb +++ b/activerecord/lib/active_record/attribute.rb @@ -9,6 +9,10 @@ module ActiveRecord FromUser.new(name, value, type) end + def with_cast_value(name, value, type) + WithCastValue.new(name, value, type) + end + def null(name) Null.new(name) end @@ -39,7 +43,7 @@ module ActiveRecord end def value_for_database - type.type_cast_for_database(value) + type.serialize(value) end def changed_from?(old_value) @@ -47,7 +51,7 @@ module ActiveRecord end def changed_in_place_from?(old_value) - type.changed_in_place?(old_value, value) + has_been_read? && type.changed_in_place?(old_value, value) end def with_value_from_user(value) @@ -58,6 +62,14 @@ module ActiveRecord self.class.from_database(name, value, type) end + def with_cast_value(value) + self.class.with_cast_value(name, value, type) + end + + def with_type(type) + self.class.new(name, value_before_type_cast, type) + end + def type_cast(*) raise NotImplementedError end @@ -66,12 +78,25 @@ module ActiveRecord true end + def came_from_user? + false + end + + def has_been_read? + defined?(@value) + end + def ==(other) self.class == other.class && name == other.name && value_before_type_cast == other.value_before_type_cast && type == other.type end + alias eql? == + + def hash + [self.class, name, value_before_type_cast, type].hash + end protected @@ -83,13 +108,27 @@ module ActiveRecord class FromDatabase < Attribute # :nodoc: def type_cast(value) - type.type_cast_from_database(value) + type.deserialize(value) end end class FromUser < Attribute # :nodoc: def type_cast(value) - type.type_cast_from_user(value) + type.cast(value) + end + + def came_from_user? + true + end + end + + class WithCastValue < Attribute # :nodoc: + def type_cast(value) + value + end + + def changed_in_place_from?(old_value) + false end end @@ -102,6 +141,10 @@ module ActiveRecord nil end + def with_type(type) + self.class.with_cast_value(name, nil, type) + end + def with_value_from_database(value) raise ActiveModel::MissingAttributeError, "can't write unknown attribute `#{name}`" end @@ -126,6 +169,6 @@ module ActiveRecord false end end - private_constant :FromDatabase, :FromUser, :Null, :Uninitialized + private_constant :FromDatabase, :FromUser, :Null, :Uninitialized, :WithCastValue end end |