123456789_123456789_123456789_123456789_123456789_

Class: ActiveRecord::Locking::LockingType

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
Instance Chain:
Inherits: ActiveModel::Type::Value
Defined in: activerecord/lib/active_record/locking/optimistic.rb

Overview

In de/serialize we change nil to 0, so that we can allow passing nil values to lock_version, and not result in ::ActiveRecord::StaleObjectError during update record.

Class Method Summary

::ActiveModel::Type::Value - Inherited

.new

Initializes a type with three basic configuration settings: precision, limit, and scale.

Instance Attribute Summary

::ActiveModel::Type::Value - Inherited

#limit, #precision, #scale,
#binary?

These predicates are not documented, as I need to look further into their use, and see if they can be removed entirely.

#mutable?, #serialized?

Instance Method Summary

::ActiveModel::Type::Value - Inherited

#==, #as_json, #assert_valid_value,
#cast

::ActiveRecord::Type casts a value from user input (e.g. from a setter).

#changed?

Determines whether a value has changed for dirty checking.

#changed_in_place?

Determines whether the mutable value has been modified since it was read.

#deserialize

Converts a value from database input to the appropriate ruby type.

#eql?
#hash,
#serializable?

Returns true if this type can convert value to a type that is usable by the database.

#serialize

Casts a value from the ruby type to a type that the database knows how to understand.

#type

Returns the unique type name as a ::Symbol.

#cast_value

Convenience method for types which do not need separate type casting behavior for user and database inputs.

#force_equality?, #map,
#type_cast_for_schema

::ActiveRecord::Type casts a value for schema dumping.

#value_constructed_by_mass_assignment?

::ActiveModel::Type::SerializeCastValue - Included

Constructor Details

.new(subtype) ⇒ LockingType

[ GitHub ]

  
# File 'activerecord/lib/active_record/locking/optimistic.rb', line 207

def self.new(subtype)
  self === subtype ? subtype : super
end

Instance Method Details

#deserialize(value)

[ GitHub ]

  
# File 'activerecord/lib/active_record/locking/optimistic.rb', line 211

def deserialize(value)
  super.to_i
end

#encode_with(coder)

[ GitHub ]

  
# File 'activerecord/lib/active_record/locking/optimistic.rb', line 223

def encode_with(coder)
  coder["subtype"] = __getobj__
end

#init_with(coder)

[ GitHub ]

  
# File 'activerecord/lib/active_record/locking/optimistic.rb', line 219

def init_with(coder)
  __setobj__(coder["subtype"])
end

#serialize(value)

[ GitHub ]

  
# File 'activerecord/lib/active_record/locking/optimistic.rb', line 215

def serialize(value)
  super.to_i
end