sfp_api_laravel_ginastica_cerebro/app/Models/StudentContract.php

<?php

namespace App\Models;

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

class StudentContract extends Model
{
    use HasFactory, SoftDeletes;

    protected $table = 'student_contracts';

    protected $guarded = ['id'];

    protected $casts = [
        'signature_date'  => 'date:Y-m-d',
        'end_date'        => 'date:Y-m-d',
        'due_date'        => 'date:Y-m-d',
        'created_at'      => 'datetime',
        'updated_at'      => 'datetime',
    ];

    public function student(): BelongsTo
    {
        return $this->belongsTo(Student::class);
    }

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

    public function classPackageUnit(): BelongsTo
    {
        return $this->belongsTo(ClassPackageUnit::class);
    }
}