Combining translatable with images in a Trix field does not work

[bmellink]

When using withFiles() to store images within a Trix field, the browser generates 404 errors when inserting the image (during edits). Example

public function fields(Request $request) {
    return [
        ID::make(__('ID'), 'id')->sortable(),
        Translatable::make([
	    Text::make('title')->sortable(),
	    Trix::make('text')->hideFromIndex()->withFiles(env('POSTS_DISK','public')),
        ]),
       ...
    ]
}

The browser will try to call a POST URL /nova-api/posts/field-attachment/translations_text_xx/{uuid of post} for each language (where xx is the language code). These URLs don't exist.

Workaround is to add hidden dummy fields for each language to ensure the URLs exist and nova can actually store the image file:

public function fields(Request $request) {
    return [
        ID::make(__('ID'), 'id')->sortable(),
        Translatable::make([
	    Text::make('title')->sortable(),
	    Trix::make('text')->hideFromIndex()->withFiles(env('POSTS_DISK','public')),
        ]),
	Trix::make('translations_text_en')->withFiles(env('POSTS_DISK','public'))->hideWhenCreating()->hideWhenUpdating()->hideFromDetail(),
	Trix::make('translations_text_nl')->withFiles(env('POSTS_DISK','public'))->hideWhenCreating()->hideWhenUpdating()->hideFromDetail(),
       ...
    ]
}

For this workaround to work the name of the dummy fields should be "translations_<original fieldname>_<language code>"
This will need to be fixed in the code, or clear instructions can be added to the documentation.

[freekmurze]

Feel free to create a PR around this.