hasOne(MerchantAccount::class,'id','merchant_id'); } public function merchantUser(){ return $this->hasOne(MerchantUser::class,'id','merchant_user_id'); } public function rewardSignUp(){ return $this->hasMany(RewardSignUp::class,'reward_id','id'); } public function rewardTransmit(){ return $this->hasMany(RewardTransmit::class,'reward_id','id'); } }