app-api/app/Models/UserCert.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use App\Models\User;

class UserCert extends Model{

    protected $table = 'user_cert';
    public $timestamps=true;
    public function user_info()
    {
        return $this->belongsTo(User::class,'user_id');
    }


}