sam-manage/app/Models/Interview/InterviewCategory.php

<?php

namespace App\Models\Interview;

use App\Traits\BelongsToTenant;
use App\Traits\ModelTrait;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class InterviewCategory extends Model
{
    use BelongsToTenant, ModelTrait, SoftDeletes;

    protected $fillable = [
        'tenant_id',
        'interview_project_id',
        'parent_id',
        'name',
        'description',
        'domain',
        'sort_order',
        'is_active',
        'created_by',
        'updated_by',
        'deleted_by',
    ];

    protected $casts = [
        'is_active' => 'boolean',
        'sort_order' => 'integer',
    ];

    public function parent()
    {
        return $this->belongsTo(self::class, 'parent_id');
    }

    public function children()
    {
        return $this->hasMany(self::class, 'parent_id')->orderBy('sort_order');
    }

    public function project()
    {
        return $this->belongsTo(InterviewProject::class, 'interview_project_id');
    }

    public function templates()
    {
        return $this->hasMany(InterviewTemplate::class, 'interview_category_id');
    }

    public function sessions()
    {
        return $this->hasMany(InterviewSession::class, 'interview_category_id');
    }
}