Description WeekType form field that allows users to modify data that represents a specific ISO 86011 week number Syntax use Symfony\Component\Form\Extension\Core\Type\WeekType; $builder->add('startDateTime', WeekType::class, [ // use this if you store week numbers as strings ('2011-W17') 'input' => 'string', // use this if you store week numbers as arrays (e.g. [2011, 17]) 'input' => 'array', // renders two <select> to select the year and week number 'widget' => 'choice', // renders two <input type="text"> to write the year and week number 'widget' => 'text', // renders a <input type="week"> which is properly rendered by most browsers 'widget' => 'single_text', ]); Footnotes Footnotes https://en.wikipedia.org/wiki/ISO_week_date ↩