How to access '$this' in rules?

[francoism90]

I know you can use the Unique rule, however I would like to use it on Livewire:

'post.name' => ['required', 'string', 'max:40', 'unique:'.Post::class.',name,'.$this->id],

How can one call $this->id?

[juse-less]

You should be able to access the $id property, by adding array $payload to your rules() method.

I didn't check the documentation right now, but immediately recalled PR #123.

public static function rules(array $payload): array
{
    return [
        'post.name' => ['required', 'string', 'max:40', 'unique:'.Post::class.',name,'.$payload['id']],
    ];
}

[francoism90]

@juse-less Thanks! :)

[francoism90]

Hmm, this seems to be removed in V2.

Edit: seems payload needs to be called.

[alexrififi]

No. It remained in the V2.

[juse-less]

The call to the Data::rules() method is present here, in v2.

It's simply just passing on the $payload that is inserted to the Data::validate() method.
The only modification it does in the call chain (from what I can tell) is that it's casting $payloads implementing \Illuminate\Contracts\Support\Arrayable to an array.
Other than that, it doesn't look like it does more than just passing it around. 🙂
So, if it's empty it could be something else.
v1 required the param to be called $payload as well, so I reckon this isn't the issue here (wrong name).

[thewebartisan7]

And how you do this with #Rule attribute ?

    #[Rule('required', 'email', 'unique:users,email')]
    public ?string $email = null;

[rubenvanassche]

Use the rules method as described above with the $payload parameter.

[thewebartisan7]

yes thanks I see that it's not possible otherwise in another issue

[thewebartisan7]

Actually I use $request and works fine:

public static function rules(Request $request): array
    {
        $unique = Rule::unique('users');
            $unique->ignore($request->user);
// ...

I think it's the same right?

[rubenvanassche]

You can inject anything in there so if the request is handy then that's a great way to solve this issue!