Dcat-Admin/tests/Models/Painter.php

<?php

namespace Tests\Models;

use Illuminate\Database\Eloquent\Model;

class Painter extends Model
{
    protected $table = 'test_painters';

    protected $fillable = ['username', 'bio'];

    public function paintings()
    {
        return $this->hasMany(Painting::class, 'painter_id');
    }
}