Using the 6.x-2.9 date api module, the code above and even this bellow don't work, somehow the form field does not get populated:

    $dateformat = 'Y-m-d H:i';
    $timestamp = time(); // <- as example, usually this is a db value
    $label = t('Custom date');
  
    $dbv = $timestamp;
    $value = NULL;
    
    // construct date, if db value is empty, default to now
    if (empty($dbv)) {
      $d = new DateTime('@'.$dbv);
      $value = $d->format($dateformat);
    } else {
      $d = new DateTime();
      $value = $d->format($dateformat);
    }
    
    $form['thedatefield'] = array(
      '#type' => 'date_popup',
      '#date_timezone' => date_default_timezone(),
      '#date_format' => $dateformat,
      '#date_year_range' => '-3:+3',
      '#title' => $label,
      '#default_value' => $value,
      '#required' => TRUE,
    );

I do as above as well but I change the date format to 'd/m/Y' and then not working at all. Does date_popup only accept 'Y-m-d' format?

I hope this is the right place to discuss issues:

In order to be able to use the theme_table() - function [or theme('table') for that matter] I use drupal_render() to render the form elements manually and let the theme-function use the output as table cell content.

Now with date_select, this does not work as expected. The parent divs get rendered the way they are supposed to, but the actual select field is rendered outside of the table, namely at the place where it is defined in the code (which means that it is rendered with the rest of the form via drupal_get_form() ).

Here is my example:

$form['employees']['year'] = array(
	'#title' => '',
	'#type' => 'date_select',
	'#date_format' => $format_year,
	'#date_label_position' => 'within',
	'#date_year_range' => '-50:+3',
);
$header = array(
	t('Year'),
);
$rows[] = array(
	drupal_render($form['employees']['year']),
);
$form['employees']['table'] = array (
	'#value' => theme('table', $header, $rows),
);

I reduced the code to the core of the problem. I normally use a foreach-loop and additional textfields.

The table then looks like this.

What am I doing wrong?

It's also possible to set date range like below:

'#date_year_range' => '1900:now',

This will of course allow to pick dates from 1900 till now.

When I add a date_select form item into my D7 custom form it allows nonsense dates, e.g. like Feb 31st etc. Is there any built-in way to validate this (on client side) or I need to write my own validation?

Or maybe I'm just doing something wrong:

$form['departure_date'] = array(
'#type' => 'date_select',
'#title' => t('Departure'),
'#default_value' => date("Y-m-d", $now),
'#date_format' => "Y-m-d",
'#date_year_range' => '-0:+2',
'#states' => array(
'visible' => array(':input[name="set_dates"]' => array('value' => 1)),
)

);

Thanks for your thoughts, Tomas

Hi - works great! Except for a DOB field the year is sorted in ascending order which is OK but is there an option to reverse sort the year? Otherwise people are scrolling from, say 1915 (unless a default is set) Thx.

How to set display only current month dates?
Is it possible?
I could hide future dates from current date using below codes:

function phponwebsites_date_popup_process_alter(&$element, &$form_state, &$context) {
    $element['#datepicker_options'] = array(
        'maxDate' => "+0D",
  );
  $element['date'] = date_popup_process_date_part($element);
}

Simillarly, i want to disable past months dates. How to do this?