belongsTo(Order::class,'order_id','id'); } public function partner() { return $this->belongsTo(Partner::class); } public function order_commission(){ return $this->hasMany(OrderCommission::class,'order_id','order_id'); } public function agency() { return $this->belongsTo(Partner::class,'agency_id','id'); } public function agreement() { return $this->hasOne(Agreement::class, 'order_id', 'order_id'); } }