stagfe2/app/Models/Segment.php

<?php

namespace App\Models;

# use Illuminate\Database\Eloquent\Model;

class Segment extends Model
{
    protected $table = 'segment';

    public function segmentTemplate() {
        return $this->hasOne(SegmentTemplate::class, 'id', 'segment_template_id');
    }

    public function note() {
        return $this->hasOne(Note::class, 'id', 'note_id');
    }

    public function client() {
        return $this->hasOne(Client::class, 'id', 'client_id');
    }
}