Class: ActiveRecord::Type::Json

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses: ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Jsonb
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `::ActiveModel::Type::Value`
Instance Chain: self, `::ActiveModel::Type::Value`
Inherits:	ActiveModel::Type::Value `::Object` ActiveModel::Type::Value ActiveRecord::Type::Json
Defined in:	activerecord/lib/active_record/type/json.rb

Class Method Summary

.new

#limit, #precision, #scale

#==, #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?	Alias for ActiveModel::Type::Value#==.
#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.
#cast_value	Convenience method for types which do not need separate type casting behavior for user and database inputs.

This class inherits a constructor from ActiveModel::Type::Value

[ GitHub ]

# File 'activerecord/lib/active_record/type/json.rb', line 25


def accessor
  ActiveRecord::Store::StringKeyedHashAccessor
end

[ GitHub ]

# File 'activerecord/lib/active_record/type/json.rb', line 21


def changed_in_place?(raw_old_value, new_value)
  deserialize(raw_old_value) != new_value
end

[ GitHub ]

# File 'activerecord/lib/active_record/type/json.rb', line 12


def deserialize(value)
  return value unless value.is_a?(::String)
  ActiveSupport::JSON.decode(value) rescue nil
end

[ GitHub ]

# File 'activerecord/lib/active_record/type/json.rb', line 17


def serialize(value)
  ActiveSupport::JSON.encode(value) unless value.nil?
end

[ GitHub ]

# File 'activerecord/lib/active_record/type/json.rb', line 8


def type
  :json
end