sam-api/app/Models/Design/ModelVersion.php

<?php

namespace App\Models\Design;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class ModelVersion extends Model
{
    use SoftDeletes;

    protected $table = 'model_versions';

    protected $fillable = [
        'tenant_id', 'model_id', 'version_no', 'status', 'effective_from', 'effective_to', 'notes', 'is_active',
    ];

    protected $casts = [
        'is_active' => 'boolean',
        'effective_from' => 'datetime',
        'effective_to' => 'datetime',
    ];

    public function model()
    {
        return $this->belongsTo(DesignModel::class, 'model_id');
    }

    public function bomTemplates()
    {
        return $this->hasMany(BomTemplate::class, 'model_version_id');
    }

    public function scopeReleased($q)
    {
        return $q->where('status', 'RELEASED');
    }
}