Encore\Admin\Grid\Filter\AbstractFilter::variables PHP Method

    protected function variables()
    {
        $variables = ['id' => $this->id, 'name' => $this->formatName($this->column), 'label' => $this->label, 'value' => $this->value, 'field' => $this->field()];
        return array_merge($variables, $this->fieldVars());
    }