import th.co.opendream.cashcard.*


  Contract.list().each { contract ->
    def gua1 =  ctx.memberService.search(contract.guarantor1)
    def gua2 =  ctx.memberService.search(contract.guarantor2)
    gua1 = gua1.getAt(0)?.id
    gua2 = gua2.getAt(0)?.id
    println "${gua1}, ${gua2}"
    if (!contract._guarantor1 || !contract._guarantor2) {
      contract._guarantor1 = Member.get(gua1);
      contract._guarantor2 = Member.get(gua2);
      contract.save();
    }
  }