Module: RecordMarshal

Defined in:
lib/second_level_cache/record_marshal.rb

Class Method Summary collapse

Class Method Details

.dump(record) ⇒ Object

dump ActiveRecord instace with only attributes. [“User”,

{"id"=>30,
"email"=>"[email protected]",
"created_at"=>2012-07-25 18:25:57 UTC
}

]



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# File 'lib/second_level_cache/record_marshal.rb', line 13

def dump(record)
  [record.class.name, record.attributes]
end

.load(serialized) ⇒ Object

load a cached record



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# File 'lib/second_level_cache/record_marshal.rb', line 18

def load(serialized)
  return unless serialized
  # fix issues 19
  # fix 2.1.2 object.changed? ActiveRecord::SerializationTypeMismatch: Attribute was supposed to be a Hash, but was a String. -- "{:a=>\"t\", :b=>\"x\"}"
  # fix 2.1.4 object.changed? is true
  # fix Rails 4.2 is deprecating `serialized_attributes` without replacement to Rails 5 is deprecating `serialized_attributes` without replacement
  klass = serialized[0].constantize
  attributes = serialized[1]

  # for ActiveRecord 5.0.0
  klass.columns.each do |c|
    name = c.name
    cast_type = klass.attribute_types[name]
    next unless cast_type.is_a?(::ActiveRecord::Type::Serialized)
    coder = cast_type.coder
    next if attributes[name].nil? || attributes[name].is_a?(String)
    if coder.is_a?(::ActiveRecord::Coders::YAMLColumn)
      attributes[name] = coder.dump(attributes[name]) if attributes[name].is_a?(coder.object_class)
    elsif coder.is_a?(::ActiveRecord::Store::IndifferentCoder)
      # https://github.com/rails/rails/blob/5b14129/activerecord/lib/active_record/store.rb#L179
      attributes[name] = coder.dump(attributes[name])
    elsif coder == ::ActiveRecord::Coders::JSON
      attributes[name] = attributes[name].to_json
    end
  end

  klass.defined_enums.each do |key, value|
    attributes[key] = value[attributes[key]] if attributes[key].is_a?(String)
  end

  klass.instantiate(attributes)
end

.load_multi(serializeds) ⇒ Object 



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# File 'lib/second_level_cache/record_marshal.rb', line 51

def load_multi(serializeds)
  serializeds.map { |serialized| load(serialized) }
end