belongsTo(OracleDOCOrderHeader::class,'orderno','orderno'); } public function oracleDocOrderSerialNos(): HasMany { return $this->hasMany(OracleDocOrderSerialNo::class,'allocationdetailsid','allocationdetailsid'); } public function oracleDocOrderSubSerialNos(): HasMany { return $this->hasMany(OracleDocOrderSubSerialNo::class,'allocationdetailsid','allocationdetailsid'); } }