Laravel fill with enum attribute gives error

Question

I have an Enum like:

<?php

namespace App\Models\helpers\Enums;

enum ComissionamentoVendedor: string
{
    case Faturamento = 'No faturamento';
    case Pagamento = 'Após o pagamento pelo cliente';
}

And I have a model that uses this Enum

...
    public $casts = [
        'comissionamento_momento' => ComissionamentoVendedor::class,
    ];
...

But when I try to save it I get an error:

$vendedor = new Vendedor;
$vendedor->fill($atributos);
$vendedor->save();

The error is ErrorException: Attempt to read property "value" on string

It happens on the file vendor/illuminate/database/Eloquent/Concerns/HasAttributes.php:951

 protected function setEnumCastableAttribute($key, $value)
 {
     // $value here is a string, a valid value from ComissionamentoVendedor Enum, sent by the frontend but looks like Laravel expects to be an Enum
     $this->attributes[$key] = isset($value) ? $value->value : null;
 }

Am I doing something wrong? I'm actually using Lumen 8.3.3.

$atributos contains the values that will fill the attributes of $vendedor. For example: [ "comissionamento_momento" => "Após o pagamento pelo cliente", "data_nascimento" => null, "tipo" => "Física", "genero" => "Feminino", "nome" => "João da Silva"] — Jhonatan Bianchi
– Jhonatan Bianchi, Commented Jan 22, 2022 at 16:39
because it is expecting an "enum" not a string ... look at the laravel docs for this, they are assigning an enum, not a string — lagbox
– lagbox, Commented Jan 22, 2022 at 16:45
How can I assign an enum if the value is coming from frontend (React)? I understand that the front would send it as a string and Laravel would do the conversion. — Jhonatan Bianchi
– Jhonatan Bianchi, Commented Jan 22, 2022 at 17:12
the version of Laravel you are using is expecting an enum not a string ... check the PHP manual for enums to see how to get your enum from a string value ... otherwise you will have to upgrade to a newer version of Laravel/Lumen 8 to have this resolve the enum from the string for you (that feature was added 2 months ago ... github.com/laravel/framework/commit/…) — lagbox
– lagbox, Commented Jan 22, 2022 at 18:00

lagbox · Accepted Answer · 2022-01-23 03:05:03Z

3

Unless you can upgrade the Illuminate libraries being used in your application you don't have the feature of the ability to have the cast get an Enum from a string for you; you will have to pass an Enum. You can get the Enum you need from a string using the from method:

$enum = ComissionamentoVendedor::from($value);

If you are not sure if this value is actually a valid value for the Enum you can use the tryFrom method:

$enum = CommissionamentoVendedor::tryFrom($value) ?? $defaultEnum;

PHP.net Manual - Language Reference - Enumerations - Backed enumerations

Github - Laravel Framework - Commit - [8.x] Enum casts accept backed values committed on Nov 15, 2021

answered Jan 23, 2022 at 3:05

lagbox

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