Use getAttributeValue to get the attribute value

[chosten]

My use case is a translated title/slug field, both stored in a JSON column but I believe it applies anytime you try to use a property of a JSON field for the fieldSlug (eg: 'slug.en'). In that case an exception is raised when the SlugInput is readling the attribute value and Model::preventAccessingMissingAttributes is enabled. To fix this we can directly call the getAttributeValue method of the model instead of the magic methods.

[camya]

Hi @chosten, thank for the PR.

Do you use the Spatie Laravel Translatable package for your translations? If yes, maybe we can add a small how-to in the "Usage & examples" section of the documentation.

[chosten]

Yes I do. But I don't use it with the Translatable trait provided by Filament. Instead I use tabs for each locale.

Sorry I'm not confident writing the documentation myself but I can provide an example. Here is what I came up with:

$locales = ['en' => 'English', 'fr' => 'Français'];
$tabs = [];
foreach ($locales as $locale => $localeName) {
    $tabs[] = Tabs\Tab::make($localeName)
        ->schema([
            TitleWithSlugInput::make(
                fieldTitle: "title.$locale",
                fieldSlug: "slug.$locale",
                titleLabel: __('Title'),
                titlePlaceholder: __('Title'),
                urlPath: "/$locale/",
                slugRuleUniqueParameters: [
                    'column' => "slug->$locale",
                    'ignorable' => fn (?Model $record) => $record,
                ],
            ),
        ]);
}

I'm not sure this is even needed if you use the Translatable trait, but I haven't tried it. But I suspect there will be a problem with the uniqueness of the slug.

[camya]

Hm, I tried your example for the documentation. Unfortunately the "url preview" does not work if using the translation. (using parameter urlVisitLinkRoute)

Do you have a working preview url in your implementation?

The problem is in the getRecordSlug() method in SlugInput.php. The record recordSlug is slug.en, but after Filament's evaluation it's null. Than the getRecordUrl() returns early and no url is generated.

// $this->recordSlug is 'slug.en', becomes 'null'.
public function getRecordSlug(): ?string
{
    return $this->evaluate($this->recordSlug);
}

[chosten]

You are right there is still a problem even with getAttributeValue. What do you think about this way:

->slugInputRecordSlug(fn (?Model $record) => data_get($record?->attributesToArray(), $fieldSlug))

It's actually the way Filament use to get the data to fill the forms.

[chosten]

As a side note, I think you should use the getRecordSlug instead for this line: : $this->getBaseUrl().$this->getBasePath().$this->evaluate($this->recordSlug);

As in: : $this->getBaseUrl().$this->getBasePath().$this->getRecordSlug();

[chosten]

@camya Do you want another PR for this ?