sfp_api_laravel_ginastica_cerebro/app/Models/FranchiseeContract.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * @property int $id
 * @property int $unit_id
 * @property string $signature_date
 * @property int $validity_months
 * @property \Carbon\Carbon $created_at
 * @property \Carbon\Carbon $updated_at
 */
class FranchiseeContract extends Model
{
    use HasFactory;

    protected $table = 'franchisee_contracts';

    protected $guarded = ['id'];

    protected $casts = [
        'start_date'      => 'date',
        'end_date'        => 'date',
        'invoice_due_date' => 'date',
        'signature_date'  => 'date',
        'created_at'      => 'datetime',
        'updated_at'      => 'datetime',
    ];

    public function unit(): BelongsTo
    {
        return $this->belongsTo(Unit::class, 'unit_id');
    }
}