#Filters Configuration

#Filter Heading

To customize the "heading" of a filter, you may define a heading property on the filter class.

    /**
     * The single value that will be displayed as heading.
     *
     * @var string
     */
    public static $heading = 'heading';

#Key

Key is the way to interact with the filter selects and is sent over to the output method or query method of a resource via Illuminate\Http\Request Object.

    /**
     * The single value that will be used as request key.
     *
     * @var string
     */
    public $key = 'user_id';