aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/lib
diff options
context:
space:
mode:
Diffstat (limited to 'activerecord/lib')
-rw-r--r--activerecord/lib/active_record.rb16
-rw-r--r--activerecord/lib/active_record/attribute_methods/before_type_cast.rb13
-rw-r--r--activerecord/lib/active_record/attribute_methods/query.rb20
-rw-r--r--activerecord/lib/active_record/attribute_methods/read.rb49
-rw-r--r--activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb48
-rw-r--r--activerecord/lib/active_record/attribute_methods/write.rb9
-rw-r--r--activerecord/lib/active_record/attributes.rb37
-rw-r--r--activerecord/lib/active_record/attributes/aliasing.rb42
-rw-r--r--activerecord/lib/active_record/attributes/store.rb15
-rw-r--r--activerecord/lib/active_record/attributes/typecasting.rb117
-rwxr-xr-xactiverecord/lib/active_record/base.rb38
-rw-r--r--activerecord/lib/active_record/types.rb38
-rw-r--r--activerecord/lib/active_record/types/number.rb30
-rw-r--r--activerecord/lib/active_record/types/object.rb37
-rw-r--r--activerecord/lib/active_record/types/serialize.rb33
-rw-r--r--activerecord/lib/active_record/types/time_with_zone.rb20
-rw-r--r--activerecord/lib/active_record/types/unknown.rb37
17 files changed, 451 insertions, 148 deletions
diff --git a/activerecord/lib/active_record.rb b/activerecord/lib/active_record.rb
index 2d66fa9fcb..8f118a6057 100644
--- a/activerecord/lib/active_record.rb
+++ b/activerecord/lib/active_record.rb
@@ -51,6 +51,7 @@ module ActiveRecord
autoload :AssociationPreload, 'active_record/association_preload'
autoload :Associations, 'active_record/associations'
autoload :AttributeMethods, 'active_record/attribute_methods'
+ autoload :Attributes, 'active_record/attributes'
autoload :AutosaveAssociation, 'active_record/autosave_association'
autoload :Relation, 'active_record/relation'
autoload :Base, 'active_record/base'
@@ -74,6 +75,7 @@ module ActiveRecord
autoload :TestCase, 'active_record/test_case'
autoload :Timestamp, 'active_record/timestamp'
autoload :Transactions, 'active_record/transactions'
+ autoload :Types, 'active_record/types'
autoload :Validator, 'active_record/validator'
autoload :Validations, 'active_record/validations'
@@ -87,6 +89,20 @@ module ActiveRecord
autoload :Write, 'active_record/attribute_methods/write'
end
+ module Attributes
+ autoload :Aliasing, 'active_record/attributes/aliasing'
+ autoload :Store, 'active_record/attributes/store'
+ autoload :Typecasting, 'active_record/attributes/typecasting'
+ end
+
+ module Type
+ autoload :Number, 'active_record/types/number'
+ autoload :Object, 'active_record/types/object'
+ autoload :Serialize, 'active_record/types/serialize'
+ autoload :TimeWithZone, 'active_record/types/time_with_zone'
+ autoload :Unknown, 'active_record/types/unknown'
+ end
+
module Locking
autoload :Optimistic, 'active_record/locking/optimistic'
autoload :Pessimistic, 'active_record/locking/pessimistic'
diff --git a/activerecord/lib/active_record/attribute_methods/before_type_cast.rb b/activerecord/lib/active_record/attribute_methods/before_type_cast.rb
index a4e144f233..74921241f7 100644
--- a/activerecord/lib/active_record/attribute_methods/before_type_cast.rb
+++ b/activerecord/lib/active_record/attribute_methods/before_type_cast.rb
@@ -8,25 +8,18 @@ module ActiveRecord
end
def read_attribute_before_type_cast(attr_name)
- @attributes[attr_name]
+ _attributes.without_typecast[attr_name]
end
# Returns a hash of attributes before typecasting and deserialization.
def attributes_before_type_cast
- self.attribute_names.inject({}) do |attrs, name|
- attrs[name] = read_attribute_before_type_cast(name)
- attrs
- end
+ _attributes.without_typecast
end
private
# Handle *_before_type_cast for method_missing.
def attribute_before_type_cast(attribute_name)
- if attribute_name == 'id'
- read_attribute_before_type_cast(self.class.primary_key)
- else
- read_attribute_before_type_cast(attribute_name)
- end
+ read_attribute_before_type_cast(attribute_name)
end
end
end
diff --git a/activerecord/lib/active_record/attribute_methods/query.rb b/activerecord/lib/active_record/attribute_methods/query.rb
index a949d80120..0154ee35f8 100644
--- a/activerecord/lib/active_record/attribute_methods/query.rb
+++ b/activerecord/lib/active_record/attribute_methods/query.rb
@@ -8,23 +8,7 @@ module ActiveRecord
end
def query_attribute(attr_name)
- unless value = read_attribute(attr_name)
- false
- else
- column = self.class.columns_hash[attr_name]
- if column.nil?
- if Numeric === value || value !~ /[^0-9]/
- !value.to_i.zero?
- else
- return false if ActiveRecord::ConnectionAdapters::Column::FALSE_VALUES.include?(value)
- !value.blank?
- end
- elsif column.number?
- !value.zero?
- else
- !value.blank?
- end
- end
+ _attributes.has?(attr_name)
end
private
@@ -35,3 +19,5 @@ module ActiveRecord
end
end
end
+
+
diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb
index 3da3d9d8cc..97caec7744 100644
--- a/activerecord/lib/active_record/attribute_methods/read.rb
+++ b/activerecord/lib/active_record/attribute_methods/read.rb
@@ -37,11 +37,7 @@ module ActiveRecord
protected
def define_method_attribute(attr_name)
- if self.serialized_attributes[attr_name]
- define_read_method_for_serialized_attribute(attr_name)
- else
- define_read_method(attr_name.to_sym, attr_name, columns_hash[attr_name])
- end
+ define_read_method(attr_name.to_sym, attr_name, columns_hash[attr_name])
if attr_name == primary_key && attr_name != "id"
define_read_method(:id, attr_name, columns_hash[attr_name])
@@ -49,18 +45,12 @@ module ActiveRecord
end
private
- # Define read method for serialized attribute.
- def define_read_method_for_serialized_attribute(attr_name)
- generated_attribute_methods.module_eval("def #{attr_name}; unserialize_attribute('#{attr_name}'); end", __FILE__, __LINE__)
- end
# Define an attribute reader method. Cope with nil column.
def define_read_method(symbol, attr_name, column)
- cast_code = column.type_cast_code('v') if column
- access_code = cast_code ? "(v=@attributes['#{attr_name}']) && #{cast_code}" : "@attributes['#{attr_name}']"
-
+ access_code = "_attributes['#{attr_name}']"
unless attr_name.to_s == self.primary_key.to_s
- access_code = access_code.insert(0, "missing_attribute('#{attr_name}', caller) unless @attributes.has_key?('#{attr_name}'); ")
+ access_code = access_code.insert(0, "missing_attribute('#{attr_name}', caller) unless _attributes.key?('#{attr_name}'); ")
end
if cache_attribute?(attr_name)
@@ -73,38 +63,7 @@ module ActiveRecord
# Returns the value of the attribute identified by <tt>attr_name</tt> after it has been typecast (for example,
# "2004-12-12" in a data column is cast to a date object, like Date.new(2004, 12, 12)).
def read_attribute(attr_name)
- attr_name = attr_name.to_s
- attr_name = self.class.primary_key if attr_name == 'id'
- if !(value = @attributes[attr_name]).nil?
- if column = column_for_attribute(attr_name)
- if unserializable_attribute?(attr_name, column)
- unserialize_attribute(attr_name)
- else
- column.type_cast(value)
- end
- else
- value
- end
- else
- nil
- end
- end
-
- # Returns true if the attribute is of a text column and marked for serialization.
- def unserializable_attribute?(attr_name, column)
- column.text? && self.class.serialized_attributes[attr_name]
- end
-
- # Returns the unserialized object of the attribute.
- def unserialize_attribute(attr_name)
- unserialized_object = object_from_yaml(@attributes[attr_name])
-
- if unserialized_object.is_a?(self.class.serialized_attributes[attr_name]) || unserialized_object.nil?
- @attributes.frozen? ? unserialized_object : @attributes[attr_name] = unserialized_object
- else
- raise SerializationTypeMismatch,
- "#{attr_name} was supposed to be a #{self.class.serialized_attributes[attr_name]}, but was a #{unserialized_object.class.to_s}"
- end
+ _attributes[attr_name]
end
private
diff --git a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
index a8e3e28a7a..4ac0c7f608 100644
--- a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
+++ b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
@@ -12,48 +12,20 @@ module ActiveRecord
end
module ClassMethods
+
+ def cache_attribute?(attr_name)
+ time_zone_aware?(attr_name) || super
+ end
+
protected
- # Defined for all +datetime+ and +timestamp+ attributes when +time_zone_aware_attributes+ are enabled.
- # This enhanced read method automatically converts the UTC time stored in the database to the time zone stored in Time.zone.
- def define_method_attribute(attr_name)
- if create_time_zone_conversion_attribute?(attr_name, columns_hash[attr_name])
- method_body = <<-EOV
- def #{attr_name}(reload = false)
- cached = @attributes_cache['#{attr_name}']
- return cached if cached && !reload
- time = read_attribute('#{attr_name}')
- @attributes_cache['#{attr_name}'] = time.acts_like?(:time) ? time.in_time_zone : time
- end
- EOV
- generated_attribute_methods.module_eval(method_body, __FILE__, __LINE__)
- else
- super
- end
- end
- # Defined for all +datetime+ and +timestamp+ attributes when +time_zone_aware_attributes+ are enabled.
- # This enhanced write method will automatically convert the time passed to it to the zone stored in Time.zone.
- def define_method_attribute=(attr_name)
- if create_time_zone_conversion_attribute?(attr_name, columns_hash[attr_name])
- method_body = <<-EOV
- def #{attr_name}=(time)
- unless time.acts_like?(:time)
- time = time.is_a?(String) ? Time.zone.parse(time) : time.to_time rescue time
- end
- time = time.in_time_zone rescue nil if time
- write_attribute(:#{attr_name}, time)
- end
- EOV
- generated_attribute_methods.module_eval(method_body, __FILE__, __LINE__)
- else
- super
- end
+ def time_zone_aware?(attr_name)
+ column = columns_hash[attr_name]
+ time_zone_aware_attributes &&
+ !skip_time_zone_conversion_for_attributes.include?(attr_name.to_sym) &&
+ [:datetime, :timestamp].include?(column.type)
end
- private
- def create_time_zone_conversion_attribute?(name, column)
- time_zone_aware_attributes && !skip_time_zone_conversion_for_attributes.include?(name.to_sym) && [:datetime, :timestamp].include?(column.type)
- end
end
end
end
diff --git a/activerecord/lib/active_record/attribute_methods/write.rb b/activerecord/lib/active_record/attribute_methods/write.rb
index e31acac050..37eadbe0a9 100644
--- a/activerecord/lib/active_record/attribute_methods/write.rb
+++ b/activerecord/lib/active_record/attribute_methods/write.rb
@@ -17,14 +17,9 @@ module ActiveRecord
# Updates the attribute identified by <tt>attr_name</tt> with the specified +value+. Empty strings for fixnum and float
# columns are turned into +nil+.
def write_attribute(attr_name, value)
- attr_name = attr_name.to_s
- attr_name = self.class.primary_key if attr_name == 'id'
+ attr_name = _attributes.unalias(attr_name)
@attributes_cache.delete(attr_name)
- if (column = column_for_attribute(attr_name)) && column.number?
- @attributes[attr_name] = convert_number_column_value(value)
- else
- @attributes[attr_name] = value
- end
+ _attributes[attr_name] = value
end
private
diff --git a/activerecord/lib/active_record/attributes.rb b/activerecord/lib/active_record/attributes.rb
new file mode 100644
index 0000000000..e4d9e89821
--- /dev/null
+++ b/activerecord/lib/active_record/attributes.rb
@@ -0,0 +1,37 @@
+module ActiveRecord
+ module Attributes
+
+ # Returns true if the given attribute is in the attributes hash
+ def has_attribute?(attr_name)
+ _attributes.key?(attr_name)
+ end
+
+ # Returns an array of names for the attributes available on this object sorted alphabetically.
+ def attribute_names
+ _attributes.keys.sort!
+ end
+
+ # Returns a hash of all the attributes with their names as keys and the values of the attributes as values.
+ def attributes
+ attributes = _attributes.dup
+ attributes.typecast! unless _attributes.frozen?
+ attributes.to_h
+ end
+
+ protected
+
+ # Not to be confused with the public #attributes method, which returns a typecasted Hash.
+ def _attributes
+ @attributes
+ end
+
+ def initialize_attribute_store(merge_attributes = nil)
+ @attributes = ActiveRecord::Attributes::Store.new
+ @attributes.merge!(merge_attributes) if merge_attributes
+ @attributes.types.merge!(self.class.attribute_types)
+ @attributes.aliases.merge!('id' => self.class.primary_key) unless 'id' == self.class.primary_key
+ @attributes
+ end
+
+ end
+end
diff --git a/activerecord/lib/active_record/attributes/aliasing.rb b/activerecord/lib/active_record/attributes/aliasing.rb
new file mode 100644
index 0000000000..db77739d1f
--- /dev/null
+++ b/activerecord/lib/active_record/attributes/aliasing.rb
@@ -0,0 +1,42 @@
+module ActiveRecord
+ module Attributes
+ module Aliasing
+ # Allows access to keys using aliased names.
+ #
+ # Example:
+ # class Attributes < Hash
+ # include Aliasing
+ # end
+ #
+ # attributes = Attributes.new
+ # attributes.aliases['id'] = 'fancy_primary_key'
+ # attributes['fancy_primary_key'] = 2020
+ #
+ # attributes['id']
+ # => 2020
+ #
+ # Additionally, symbols are always aliases of strings:
+ # attributes[:fancy_primary_key]
+ # => 2020
+ #
+ def [](key)
+ super(unalias(key))
+ end
+
+ def []=(key, value)
+ super(unalias(key), value)
+ end
+
+ def aliases
+ @aliases ||= {}
+ end
+
+ def unalias(key)
+ key = key.to_s
+ aliases[key] || key
+ end
+
+ end
+ end
+end
+
diff --git a/activerecord/lib/active_record/attributes/store.rb b/activerecord/lib/active_record/attributes/store.rb
new file mode 100644
index 0000000000..61109f4acc
--- /dev/null
+++ b/activerecord/lib/active_record/attributes/store.rb
@@ -0,0 +1,15 @@
+module ActiveRecord
+ module Attributes
+ class Store < Hash
+ include ActiveRecord::Attributes::Typecasting
+ include ActiveRecord::Attributes::Aliasing
+
+ # Attributes not mapped to a column are handled using Type::Unknown,
+ # which enables boolean typecasting for unmapped keys.
+ def types
+ @types ||= Hash.new(Type::Unknown.new)
+ end
+
+ end
+ end
+end
diff --git a/activerecord/lib/active_record/attributes/typecasting.rb b/activerecord/lib/active_record/attributes/typecasting.rb
new file mode 100644
index 0000000000..56c32f9895
--- /dev/null
+++ b/activerecord/lib/active_record/attributes/typecasting.rb
@@ -0,0 +1,117 @@
+module ActiveRecord
+ module Attributes
+ module Typecasting
+ # Typecasts values during access based on their key mapping to a Type.
+ #
+ # Example:
+ # class Attributes < Hash
+ # include Typecasting
+ # end
+ #
+ # attributes = Attributes.new
+ # attributes.types['comments_count'] = Type::Integer
+ # attributes['comments_count'] = '5'
+ #
+ # attributes['comments_count']
+ # => 5
+ #
+ # To support keys not mapped to a typecaster, add a default to types.
+ # attributes.types.default = Type::Unknown
+ # attributes['age'] = '25'
+ # attributes['age']
+ # => '25'
+ #
+ # A valid type supports #cast, #precast, #boolean, and #appendable? methods.
+ #
+ def [](key)
+ value = super(key)
+ typecast_read(key, value)
+ end
+
+ def []=(key, value)
+ super(key, typecast_write(key, value))
+ end
+
+ def to_h
+ hash = {}
+ hash.merge!(self)
+ hash
+ end
+
+ def dup # :nodoc:
+ copy = super
+ copy.types = types.dup
+ copy
+ end
+
+ # Provides a duplicate with typecasting disabled.
+ #
+ # Example:
+ # attributes = Attributes.new
+ # attributes.types['comments_count'] = Type::Integer
+ # attributes['comments_count'] = '5'
+ #
+ # attributes.without_typecast['comments_count']
+ # => '5'
+ #
+ def without_typecast
+ dup.without_typecast!
+ end
+
+ def without_typecast!
+ types.clear
+ self
+ end
+
+ def typecast!
+ keys.each { |key| self[key] = self[key] }
+ self
+ end
+
+ # Check if key has a value that typecasts to true.
+ #
+ # attributes = Attributes.new
+ # attributes.types['comments_count'] = Type::Integer
+ #
+ # attributes['comments_count'] = 0
+ # attributes.has?('comments_count')
+ # => false
+ #
+ # attributes['comments_count'] = 1
+ # attributes.has?('comments_count')
+ # => true
+ #
+ def has?(key)
+ value = self[key]
+ boolean_typecast(key, value)
+ end
+
+ def types
+ @types ||= {}
+ end
+
+ protected
+
+ def types=(other_types)
+ @types = other_types
+ end
+
+ def boolean_typecast(key, value)
+ value ? types[key].boolean(value) : false
+ end
+
+ def typecast_read(key, value)
+ type = types[key]
+ value = type.cast(value)
+ self[key] = value if type.appendable? && !frozen?
+
+ value
+ end
+
+ def typecast_write(key, value)
+ types[key].precast(value)
+ end
+
+ end
+ end
+end
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 76dbd00ad9..4274df54cc 100755
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1644,7 +1644,7 @@ module ActiveRecord #:nodoc:
def instantiate(record)
object = find_sti_class(record[inheritance_column]).allocate
- object.instance_variable_set(:'@attributes', record)
+ object.send(:initialize_attribute_store, record)
object.instance_variable_set(:'@attributes_cache', {})
object.send(:_run_find_callbacks)
@@ -2415,7 +2415,7 @@ module ActiveRecord #:nodoc:
# In both instances, valid attribute keys are determined by the column names of the associated table --
# hence you can't have attributes that aren't part of the table columns.
def initialize(attributes = nil)
- @attributes = attributes_from_column_definition
+ initialize_attribute_store(attributes_from_column_definition)
@attributes_cache = {}
@new_record = true
ensure_proper_type
@@ -2441,7 +2441,7 @@ module ActiveRecord #:nodoc:
callback(:after_initialize) if respond_to_without_attributes?(:after_initialize)
cloned_attributes = other.clone_attributes(:read_attribute_before_type_cast)
cloned_attributes.delete(self.class.primary_key)
- @attributes = cloned_attributes
+ initialize_attribute_store(cloned_attributes)
clear_aggregation_cache
@attributes_cache = {}
@new_record = true
@@ -2667,7 +2667,7 @@ module ActiveRecord #:nodoc:
def reload(options = nil)
clear_aggregation_cache
clear_association_cache
- @attributes.update(self.class.find(self.id, options).instance_variable_get('@attributes'))
+ _attributes.update(self.class.find(self.id, options).instance_variable_get('@attributes'))
@attributes_cache = {}
self
end
@@ -2764,16 +2764,6 @@ module ActiveRecord #:nodoc:
!value.blank?
end
- # Returns true if the given attribute is in the attributes hash
- def has_attribute?(attr_name)
- @attributes.has_key?(attr_name.to_s)
- end
-
- # Returns an array of names for the attributes available on this object sorted alphabetically.
- def attribute_names
- @attributes.keys.sort
- end
-
# Returns the column object for the named attribute.
def column_for_attribute(name)
self.class.columns_hash[name.to_s]
@@ -2897,18 +2887,6 @@ module ActiveRecord #:nodoc:
end
end
- def convert_number_column_value(value)
- if value == false
- 0
- elsif value == true
- 1
- elsif value.is_a?(String) && value.blank?
- nil
- else
- value
- end
- end
-
def remove_attributes_protected_from_mass_assignment(attributes)
safe_attributes =
if self.class.accessible_attributes.nil? && self.class.protected_attributes.nil?
@@ -3027,7 +3005,7 @@ module ActiveRecord #:nodoc:
end
def instantiate_time_object(name, values)
- if self.class.send(:create_time_zone_conversion_attribute?, name, column_for_attribute(name))
+ if self.class.send(:time_zone_aware?, name)
Time.zone.local(*values)
else
Time.time_with_datetime_fallback(@@default_timezone, *values)
@@ -3114,10 +3092,6 @@ module ActiveRecord #:nodoc:
comma_pair_list(quote_columns(quoter, hash))
end
- def object_from_yaml(string)
- return string unless string.is_a?(String) && string =~ /^---/
- YAML::load(string) rescue string
- end
end
Base.class_eval do
@@ -3132,6 +3106,7 @@ module ActiveRecord #:nodoc:
include AttributeMethods::PrimaryKey
include AttributeMethods::TimeZoneConversion
include AttributeMethods::Dirty
+ include Attributes, Types
include Callbacks, ActiveModel::Observing, Timestamp
include Associations, AssociationPreload, NamedScope
include ActiveModel::Conversion
@@ -3141,6 +3116,7 @@ module ActiveRecord #:nodoc:
include AutosaveAssociation, NestedAttributes
include Aggregations, Transactions, Reflection, Batches, Calculations, Serialization
+
end
end
diff --git a/activerecord/lib/active_record/types.rb b/activerecord/lib/active_record/types.rb
new file mode 100644
index 0000000000..74f569352b
--- /dev/null
+++ b/activerecord/lib/active_record/types.rb
@@ -0,0 +1,38 @@
+module ActiveRecord
+ module Types
+ extend ActiveSupport::Concern
+
+ module ClassMethods
+
+ def attribute_types
+ attribute_types = {}
+ columns.each do |column|
+ options = {}
+ options[:time_zone_aware] = time_zone_aware?(column.name)
+ options[:serialize] = serialized_attributes[column.name]
+
+ attribute_types[column.name] = to_type(column, options)
+ end
+ attribute_types
+ end
+
+ private
+
+ def to_type(column, options = {})
+ type_class = if options[:time_zone_aware]
+ Type::TimeWithZone
+ elsif options[:serialize]
+ Type::Serialize
+ elsif [ :integer, :float, :decimal ].include?(column.type)
+ Type::Number
+ else
+ Type::Object
+ end
+
+ type_class.new(column, options)
+ end
+
+ end
+
+ end
+end
diff --git a/activerecord/lib/active_record/types/number.rb b/activerecord/lib/active_record/types/number.rb
new file mode 100644
index 0000000000..cfbe877575
--- /dev/null
+++ b/activerecord/lib/active_record/types/number.rb
@@ -0,0 +1,30 @@
+module ActiveRecord
+ module Type
+ class Number < Object
+
+ def boolean(value)
+ value = cast(value)
+ !(value.nil? || value.zero?)
+ end
+
+ def precast(value)
+ convert_number_column_value(value)
+ end
+
+ private
+
+ def convert_number_column_value(value)
+ if value == false
+ 0
+ elsif value == true
+ 1
+ elsif value.is_a?(String) && value.blank?
+ nil
+ else
+ value
+ end
+ end
+
+ end
+ end
+end \ No newline at end of file
diff --git a/activerecord/lib/active_record/types/object.rb b/activerecord/lib/active_record/types/object.rb
new file mode 100644
index 0000000000..ec3f861abd
--- /dev/null
+++ b/activerecord/lib/active_record/types/object.rb
@@ -0,0 +1,37 @@
+module ActiveRecord
+ module Type
+ module Casting
+
+ def cast(value)
+ typecaster.type_cast(value)
+ end
+
+ def precast(value)
+ value
+ end
+
+ def boolean(value)
+ cast(value).present?
+ end
+
+ # Attributes::Typecasting stores appendable? types (e.g. serialized Arrays) when typecasting reads.
+ def appendable?
+ false
+ end
+
+ end
+
+ class Object
+ include Casting
+
+ attr_reader :name, :options
+ attr_reader :typecaster
+
+ def initialize(typecaster = nil, options = {})
+ @typecaster, @options = typecaster, options
+ end
+
+ end
+
+ end
+end \ No newline at end of file
diff --git a/activerecord/lib/active_record/types/serialize.rb b/activerecord/lib/active_record/types/serialize.rb
new file mode 100644
index 0000000000..7b6af1981f
--- /dev/null
+++ b/activerecord/lib/active_record/types/serialize.rb
@@ -0,0 +1,33 @@
+module ActiveRecord
+ module Type
+ class Serialize < Object
+
+ def cast(value)
+ unserialize(value)
+ end
+
+ def appendable?
+ true
+ end
+
+ protected
+
+ def unserialize(value)
+ unserialized_object = object_from_yaml(value)
+
+ if unserialized_object.is_a?(@options[:serialize]) || unserialized_object.nil?
+ unserialized_object
+ else
+ raise SerializationTypeMismatch,
+ "#{name} was supposed to be a #{@options[:serialize]}, but was a #{unserialized_object.class.to_s}"
+ end
+ end
+
+ def object_from_yaml(string)
+ return string unless string.is_a?(String) && string =~ /^---/
+ YAML::load(string) rescue string
+ end
+
+ end
+ end
+end \ No newline at end of file
diff --git a/activerecord/lib/active_record/types/time_with_zone.rb b/activerecord/lib/active_record/types/time_with_zone.rb
new file mode 100644
index 0000000000..3a8b9292f9
--- /dev/null
+++ b/activerecord/lib/active_record/types/time_with_zone.rb
@@ -0,0 +1,20 @@
+module ActiveRecord
+ module Type
+ class TimeWithZone < Object
+
+ def cast(time)
+ time = super(time)
+ time.acts_like?(:time) ? time.in_time_zone : time
+ end
+
+ def precast(time)
+ unless time.acts_like?(:time)
+ time = time.is_a?(String) ? ::Time.zone.parse(time) : time.to_time rescue time
+ end
+ time = time.in_time_zone rescue nil if time
+ super(time)
+ end
+
+ end
+ end
+end
diff --git a/activerecord/lib/active_record/types/unknown.rb b/activerecord/lib/active_record/types/unknown.rb
new file mode 100644
index 0000000000..f832c7b304
--- /dev/null
+++ b/activerecord/lib/active_record/types/unknown.rb
@@ -0,0 +1,37 @@
+module ActiveRecord
+ module Type
+ # Useful for handling attributes not mapped to types. Performs some boolean typecasting,
+ # but otherwise leaves the value untouched.
+ class Unknown
+
+ def cast(value)
+ value
+ end
+
+ def precast(value)
+ value
+ end
+
+ # Attempts typecasting to handle numeric, false and blank values.
+ def boolean(value)
+ empty = (numeric?(value) && value.to_i.zero?) || false?(value) || value.blank?
+ !empty
+ end
+
+ def appendable?
+ false
+ end
+
+ protected
+
+ def false?(value)
+ ActiveRecord::ConnectionAdapters::Column::FALSE_VALUES.include?(value)
+ end
+
+ def numeric?(value)
+ Numeric === value || value !~ /[^0-9]/
+ end
+
+ end
+ end
+end \ No newline at end of file