sfp_api_laravel_diarista/app/Models/ProviderSpeciality.php

<?php

namespace App\Models;

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

class ProviderSpeciality extends Model
{
    use HasFactory, SoftDeletes;

    protected $fillable = [
        'provider_id',
        'speciality_id',
    ];

    protected $casts = [
        'provider_id' => 'integer',
        'speciality_id' => 'integer',
    ];

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

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