I do have similar needs and would like to fill in, in case someone has an good idea on how to achieve this. It is probably something that should be included in the views module.
I am using the calendar view-module to display some of my events as a calendar. These events are stored as a couple of different content types, each with their own concept of time. Some multi day, and some as standard one day date time events. As it is only a few events pr month, I would as well be able to present them as a list for the coming year.
For the time being I have added a small module that copies the start date from the multiday event to the one day date time event when it is saved. But then I get two instances of those events in my month calendar. A much cleaner way would be to do this as part of the "sort criteria" in views.
If anyone can point me in a direction I might have a look into how to do this as part of a custom module.
Are there no one with an answer to this?
Well, I managed to find some time this evening. The referred issued did not solve our needs. A modification providing the date as a date format to the view is required.
I am also interested in this. However, wouldn't compatibility be an issue for the Webform Views Integration module? As it is really that module that presents the webform fields so they are available in views?
I have looked into the following issue related to that module
https://www.drupal.org/project/webform_views/issues/3321326
🐛
Missing filters for DateTime element type
Fixed
("Missing filters for DateTime element type")
But I am not skilled enough in PHP to be able to understand whether it solves our problem or not as well? I do think there are somewhat more to do? I will test that code when I have time to do so, probably next week.
This patch solved it for me
https://www.drupal.org/project/calendar/issues/3217106 →
I had a problem that seems to be exactly the same.