different date serializing when removing an element

[samtigall]

Hi!
I hope this is the correct place to report this issue.
I'm using the https://github.com/hofff/contao-calendarfield which uses the multicolumnwizard to manage disabled Dates for a calendar form input.

The multicolumnwizard is configured like this:

/**
 * Palettes
 */
$GLOBALS['TL_DCA']['tl_form_field']['palettes']['__selector__']  = array_merge($GLOBALS['TL_DCA']['tl_form_field']['palettes']['__selector__'], array('dateDirection', 'dateImage'));
$GLOBALS['TL_DCA']['tl_form_field']['palettes']['calendarfield'] = '{type_legend},type,name,label;{fconfig_legend},mandatory,placeholder,dateFormat,dateCssTheme,dateDirection,dateImage,dateDisabledWeekdays,dateDisabledDays,dateCustomConfiguration;{expert_legend:hide},class,value,dateParseValue,accesskey,tabindex;{template_legend:hide},customTpl;{invisible_legend:hide},invisible';

/**
 * Subpalettes
 */
$GLOBALS['TL_DCA']['tl_form_field']['subpalettes']['dateDirection_ownMinMax'] = 'dateDirectionMinMax';
$GLOBALS['TL_DCA']['tl_form_field']['subpalettes']['dateImage']               = 'dateImageSRC,dateImageSize';

[...]

$GLOBALS['TL_DCA']['tl_form_field']['fields']['dateDisabledDays'] = array
(
  'label'                   => &$GLOBALS['TL_LANG']['tl_form_field']['dateDisabledDays'],
  'inputType'               => 'multiColumnWizard',
  'eval'                    => array
  (
    'style'        => 'min-width: 100%;',
    'tl_class'     =>'clr',
    'minCount'        => 0,

    'columnFields' => array
    (
      'date' => array
      (
        'label'            => &$GLOBALS['TL_LANG']['tl_form_field']['dateDisabledDaysDate'],
        'exclude'          => true,
        'inputType'        => 'text',
        'eval'             => array('rgxp'=>'date', 'datepicker'=>true, 'tl_class'=>'wizard', 'style'=>'width: 300px;'),
      ),
      'active' => array
      (
        'label'            => &$GLOBALS['TL_LANG']['tl_form_field']['dateDisabledDaysActive'],
        'exclude'          => true,
        'inputType'        => 'checkbox'
      )
    )
  ),
  'sql'            => "blob NULL"
);

When I create 2+ entries (e.g. 08.09.2023, 09.09.2023 and 10.09.2023) and save it, it gets correctly serialized like this:
a:3:{i:0;a:2:{s:4:"date";i:1694124000;s:6:"active";s:1:"1";}i:1;a:2:{s:4:"date";i:1694210400;s:6:"active";s:0:"";}i:2;a:2:{s:4:"date";i:1694296800;s:6:"active";s:0:"";}}
note the timestamps.

When I remove an entry which is not the last one (e.g. 08.09.2023) it gets serialized like this:
a:2:{i:0;a:2:{s:4:"date";i:1694210400;s:6:"active";s:0:"";}i:1;a:2:{s:4:"date";s:10:"10.09.2023";s:6:"active";s:0:"";}}
Only the last date of the list gets serialized as string while the rest gets serialized as integer.

Kind regards,
Thomas

[zonky2]

@samtigall
please add the version of MCW, Contao, PHP and calenderfield

[samtigall]

@zonky2
MCW 3.6.3
Contao 4.13.37
PHP php:8.2-fpm
calnderfield 4.0.1