http://dev.mensfeld.pl/2013/10/state-machine-gem-undefined-method-underscore-for-activemodelname/
http://dev.mensfeld.pl/2013/10/state-machine-gem-undefined-method-underscore-for-activemodelname/

quoideneuf/pop-up-archive,quoideneuf/pop-up-archive,quoideneuf/pop-up-archive,quoideneuf/pop-up-archive