refator checkin update using 'has_many through'
refator checkin update using 'has_many through'

springwq/sikeio,hayeah/sike,sikeio/sikeio,hayeah/sike,hymRedemption/sikeio,sikeio/sikeio,springwq/sikeio,hymRedemption/sikeio,hayeah/sike,hymRedemption/sikeio,johnnyhappy365/sikeio,sikeio/sikeio,johnnyhappy365/sikeio,springwq/sikeio,sikeio/sikeio,hayeah/sike,hymRedemption/sikeio,johnnyhappy365/sikeio,johnnyhappy365/sikeio,springwq/sikeio