*/ public function rules(): array { return [ $this->getImageFieldName() => ['string', 'required', new ImageData()], ]; } public function getFileContentAsBinaryString(): string { return base64_decode(Str::after($this->{$this->getImageFieldName()}, ','), true); } public function getFileExtension(): string { return Str::after(Str::before($this->{$this->getImageFieldName()}, ';'), '/'); } abstract protected function getImageFieldName(): string; }