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 12

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 20

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, attributes = serialized[0].constantize, serialized[1]
  if ::ActiveRecord::VERSION::STRING < '4.2.0'
    klass.serialized_attributes.each do |k, v|
      next if attributes[k].nil? || attributes[k].is_a?(String)
      if attributes[k].respond_to?(:unserialize)
        if attributes[k].serialized_value.is_a?(String)
          attributes[k] = attributes[k].serialized_value
          next
        end

        if ::ActiveRecord::VERSION::STRING >= '4.1.0' && attributes[k].coder == ActiveRecord::Coders::JSON
          attributes[k] = attributes[k].serialized_value.to_json
        else
          attributes[k] = attributes[k].serialized_value
        end
      end
    end
  else
    klass.columns.select{|t| t.cast_type.is_a?(::ActiveRecord::Type::Serialized) }.each do |c|
      name, coder = c.name, c.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 == ActiveRecord::Coders::JSON
        attributes[name] = attributes[name].to_json
      end
    end
  end
  klass.instantiate(attributes)
end

.load_multi(serializeds) ⇒ Object 



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# File 'lib/second_level_cache/record_marshal.rb', line 57

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