Filament•3w ago

PhpStan error on $this->resolveRecord($record)

Hello All, I run phpstan on my code regularly, and I stumbled upon the following issue. This code excerpt is from a page definition

class PosMenuPage extends Page{
  ...   
     /**
     * @var PointOfSale|int|string|null
     */
    public Model|string|int|null  $record;

    public function mount(int | string $record): void
    {
        $this->record = $this->resolveRecord($record);
        $this->categories = $this->record->merchant->categories()
...

class PosMenuPage extends Page{
  ...   
     /**
     * @var PointOfSale|int|string|null
     */
    public Model|string|int|null  $record;

    public function mount(int | string $record): void
    {
        $this->record = $this->resolveRecord($record);
        $this->categories = $this->record->merchant->categories()
...

Phpstan reports the following for the last row:

Access to an undefined property Illuminate\Database\Eloquent\Model::$merchant.

Even I declared the $record type in the docblock, the resolveRecord return type is a Model, and phpstan can't recognize the merchant belongsTo relation. Of course I can re-implement the resolveRecord function in my class and typehint with the correct return type, but I feel this is just add unnecessary bloat to my code. How can I typehint this function to pass the phpstan?

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PhpStan error on $this->resolveRecord($record)