Fix field_type method
Fix field_type method

cartolari/carnival,Vizir/carnival,dsakuma/carnival,Vizir/carnival,dsakuma/carnival,dsakuma/carnival,cartolari/carnival,cartolari/carnival,cartolari/carnival,Vizir/carnival,Vizir/carnival,Vizir/carnival,dsakuma/carnival,cartolari/carnival,dsakuma/carnival