I need to personalize some settings in the date popup calendar in a date field. This is the documentation for the popup calendar used in the Drupal date field: http://api.jqueryui.com/datepicker/

I would to configure for example, the minDate property, to set a minimum selectable Date, according the documentation this is the code:

$( ".selector" ).datepicker({
  minDate: new Date(2007, 1 - 1, 1)

But... How and where do I type it in a custom module? It looks javascript, but I don't know how to make this code work for my date form element.

1 Answer 1


You can add it with #datepicker_options, e.g.:

$form['date'] = [
  '#type' => 'date_popup',
  // ...
  '#datepicker_options' => [
    'minDate' => 0,
  • Clive, I think your code is good for adding a new form element. What is the code to add the property in an existent form element?
    – bunset
    Feb 11, 2017 at 16:57
  • Very similar, just find where the element you want to change is in the form array and use something like $form['foo']['#datepicker_options'] = ...
    – Clive
    Feb 11, 2017 at 23:25
  • I have tried multiple #datepicker_options in different places and it doesn't work on my popup calendar. I want to try with javascript. How can I add the javascript code programmatically from my module?. I need programmatically because the property I have to change is a variable value in my specific use case.
    – bunset
    Feb 12, 2017 at 5:08
  • 1
    Adding/managing JS is covered at length in the docs; that page should everything you need from the sounds of your requirements, but if not try searching this site. For example drupal.stackexchange.com/questions/12851/… has some good supplementary info. Personally I'd be tempted to persevere with the form alter approach, it's likely you just haven't found the right array element yet. Also: drupal.stackexchange.com/questions/27767/…
    – Clive
    Feb 12, 2017 at 17:41
  • 1
    Yes, but I can't tell you what that is you need to inspect the code and see what classes your theme is attaching to the input for you to target
    – Clive
    Feb 13, 2017 at 7:45

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