Laravel 9 enum conditional if-CodePudding

I'm create one enum, and I added one condition:

<?php

declare(strict_types=1);

namespace App\Enums;

use App\Models\collections;

enum ServiceColections : string {


    case POS = (isset(collections::first()))? 'POS' : '';

}

the condition is the following if there are items in the database(table collections), so create case POS, but if they don't exist don't create.

currently I'm having this error: Enum case value must be compile-time evaluatable

why it dont work?

CodePudding user response：

As the error its self say, this will not work at the time of compiling.

What we can do is, add enum method:

use App\Models\collections;

enum ServiceColections 
{
    case POS;

    public function collection(): string // name the function of your choice
    {
        return match($this) 
        {
            self::POS => collections::first() ? 'POS' : '',
        };
    }
}

Methods can be used like so:

\App\Enums\ServiceColections::POS->collection();