get()->groupBy('sangh_id'); foreach ($membersGroupedBySangh as $sanghId => $members) { $counter = 1; foreach ($members as $member) { $newMemberId = str_pad($counter, 4, '0', STR_PAD_LEFT); $member->update(['member_id' => $newMemberId]); $counter++; } } $this->info('Member IDs added to columns successfully.'); return 0; } }