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mgudites
Helper II
Helper II

Filtering date-range in SharePoint List gallery

I have a form that is attached to a SharePoint Online list. In the form, two of the fields the user is being asked to fill out are "Start Date" and "End Date," and these get populated back to SharePoint when submitting the form. This part is working.

 

I added a gallery connected to the SharePoint list itself in the form, and I'm trying to filter this to show line items where the Start Date and/OR End Date being specified in the form fall between the start/end dates of existing entries in the SharePoint list. In other words, I'm trying to show people conflicts. "Pick another date because there is some kind of overlap with these existing line-items in the SharePoint list." So for example, if there's an existing entry in SharePoint where Start Date = 8/1/22 and End Date = 8/5/22, and I go to submit a new form with Start Date 8/3/22 and end date 8/7/22, that existing entry in SharePoint should show up in the gallery since there's overlap (not exactly the same, but there's some overlap). However, nothing I do seems to work. It's filtering, data shows up, but it's filtering incompletely. I've tried every logic combo I can think of any nothing seems to work. I need it to show all items from the SharePoint list where ANY PORTION of the date-range being requested on the form conflicts with any entries already existing in SharePoint.

 

Here's the logic that to me, should work but isn't. Maybe it's something obvious because I've been staring at this for a couple of days and my eyes are starting to go blurry.

 

Filter
(Reservations,
(
(DateValue(NewResStartDate.SelectedDate) >= DateValue('Reservation Start') && DateValue(NewResStartDate.SelectedDate) < DateValue('Reservation End'))
Or
(DateValue(NewResEndDate.SelectedDate) > DateValue('Reservation Start') && DateValue(NewResEndDate.SelectedDate) <= DateValue('Reservation End'))
)
)

 

The "NewRes..." ones are the form fields and the "Reservation..." ones are the SharePoint fields.

 

Basically the logic as I see it is:

Show entries where ("form start date" is gt= to SharePoint.Start and lt SharePoint.End) OR ("form end date" is gt to SharePoint.Start and lt= SharePoint.End)

16 REPLIES 16

Yep, your logic looks correct to me and that's what I want it to do, but it's not! I just substituted your code and it's still doing the same thing.

 

Here's an example from today. Screenshot #1 is July 9 - July 29, Screenshot #2 is July 5 - July 29. When I expand the range, it's taking out entries that should still be in there instead of adding more in!

 

For what it's worth, in screenshot #1, "Steve Stevenson's" dates in SharePoint are July 7 - July 10, and "Laura Customer's" are July 8 - July 15. These two should absolutely still show up when I expand the date range (screenshot #2), but it's taking them out even though they still apply!

 

9-29.png

5-29.png

WarrenBelz
Most Valuable Professional
Most Valuable Professional

@mgudites ,

Can you please post your exact code in Text (in a formatted Text box like mine would help). Also confirm that those two date pickers are NewResStartDate and NewResEndDate. How may records are in the list?

 

Right now there are 9 records in the SharePoint list while I'm testing (keeping it short on purpose for now). Correct, those pickers are NewResStartDate and NewResEndDate.

 

The code I have in the "Items" box in the Advanced area of the Gallery is just what you gave me earlier (or are you looking for me to post code from another area?):

Filter(
   Reservations,
   (
      NewResStartDate.SelectedDate >= 'Reservation Start' && 
      NewResStartDate.SelectedDate < 'Reservation End'
   ) ||
   (
      NewResEndDate.SelectedDate > 'Reservation Start' && 
      NewResEndDate.SelectedDate <= 'Reservation End'
   )
)

 

WarrenBelz
Most Valuable Professional
Most Valuable Professional

@mgudites ,

No - i am just making sure everything is as I understand it. As you said - makes no sense - as a test try another gallery outside the form - you may have a corrupt gallery.

This morning I created a whole new, bare-bones power app with nothing but two date pickers and a gallery connected to this SharePoint list. Same exact results, I'm afraid. Expanding the date range = fewer dates being selected. It's like PowerApps isn't processing the logic correctly somehow. 

EDIT:
I just did another test, where I broke it out into TWO separate galleries, each with half of the original filter statement, to see if between the two they would show me the correct entries if you were to combine them. So like this:

Gallery 1:
Filter(
   Reservations,
   (
      NewResStartDate.SelectedDate >= 'Reservation Start' && 
      NewResStartDate.SelectedDate < 'Reservation End'
   ) 

Gallery 2:
Filter(
   Reservations,
   (
      NewResEndDate.SelectedDate > 'Reservation Start' && 
      NewResEndDate.SelectedDate <= 'Reservation End'
   )
)

 

Same results!! When I expand the date range, items will fall off one or the other gallery, even though they still should qualify to be on there.

I think I just got it figured out. This was one of those things where I think I just couldn't visualize it via the code, and I was thinking about it the wrong way.

 

Filter(
 Reservations, 
 (
  'Reservation Start' >= NewResStartDate.SelectedDate && 
  'Reservation Start' < NewResEndDate.SelectedDate
  
  ) || 
  
  (
  'Reservation End' > NewResStartDate.SelectedDate && 
  'Reservation End' <= NewResEndDate.SelectedDate
 )
) 

 

WarrenBelz
Most Valuable Professional
Most Valuable Professional

Hi @mgudites ,

It should work the other way, but I stared at it for too long (and it is not something I normally deal with) - the list fields are better placed first like yours

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