Sync end date for the date popup functionality

Do you really need to patch a core module for that?
Can't you rely on a js based solution? e.g. http://tylerfrankenstein.com/code/drupal-automatically-set-date-when-dat...

Sorry… my mistake.

does it already works?

right now i also found http://drupal.stackexchange.com/questions/101835/change-end-date-automat...

#3 did not work with multi-value date fields.
I altered the code to also work with multivalue fields.

This patch requires date >= 2.9

I tried the last patch with multivalue field and now it works :)

Thanks!

The patch from #10 does indeed work with Date Version: 7.x-2.9, thank you!

Is there any planning about when this could be integrated in the contrib Date module?

I appreciate this effort, of course, but found that the Smart Dates module is the more convenient solution: Set a default duration for the date field (which will pre-popuplate end date+time), and then Smart Dates will keep end date/time in synch when user changes the start date/time.

Hope that this patch won't interfere with Smart Dates when it will be committed, or that both approaches can be merged.

#10 merged. Thanks.

Followup: #2868046: Have End Date initially blank before it's synced, rather than populated with "now" values

This feature does not work when I use datex module as a date picker because This feature depends on the date_popup.js file, and when another module is used as a date picker, this file does not load. How to write a separate JavaScript file for this feature to load on the page anyway?
and how do you think I put this code

if (datePopup.settings.syncEndDate) {
            $('.start-date-wrapper').each(function(){
              var start_date_wrapper = this;
              $(this).find('input:eq(0)').change(function(){
                $(start_date_wrapper).next('.end-date-wrapper').find('input:eq(0)').val($(this).val());
              });
            });
          }  

in datex.js file to solve my problem?

@abdolmaleki: Please open a new issue for this, thank you.