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rlegner
Frequent Visitor

Date Picker on Form Will Not Allow Blank Date Into Dataset

I am struggling with Date Picker in a data card on a form.  I want to allow users to enter a date, modify a date, leave the date blank, or change an existing date to blank. Changing the existing date to blank is where I run into difficulty; it just does not let me do it. 

 

Scenario:

  1. There is a non-blank date in the current dataset
  2. User enters a blank into the date picker and submits form (submit, not patch)
  3. The non-blank date remains in the dataset

The data is hosted in SQL Server. 

The field type is date.

The field allows null values.

 

Is anyone experiencing the same issue? Fixes? Workarounds?

 

Thanks.

20 REPLIES 20

Just made a form to test, and I could get it to reset to blank by setting the DataCardValue that the datepicker is in, default to Blank(). then adding a button in that has an onselect of

Reset(DateValue1)

 

Had a label in the form that was set to DatValue1.SelectedDate. When I seleted a date, it showed, and then pressing the clear date button I made it went back to blank. I then submitted this form, and the record created had a blank date, as expected.

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Thanks for your reply. I tried setting up the way you describe. It still will not write a blank to the underlying dataset. Clearing the Date Picker on the form works, but the blank does not get through to the SQL Server record.

What is the update property of that data card set to? And does the field, as you have it set up in SQL, by any chance have a required status, or maybe a default value?

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It is set to the DataCardValue4.SelectedDate. DataCardValue4 is the Date Picker in question.

In SQL Server, the field is not required, i.e. Allow Nulls is set to Yes and there is no Default Value set (screenshot).

There are no other constraints on the table. 

 

Any other thoughts?

 

rlegner_0-1670358137385.png

 

I am going to have to think about it. Yours is set up same as mine, and mine is sending them blank. Only difference is you are using SQL and my source is SPList. Possible the issue is somewhere in that difference. @timl does anything jump out to you man?

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Thanks. I am new to PowerApps and this is the first time building a form and using a date picker, so I am not confident whether I am wiring things up correctly nor in am I confident in the expected behavior of the date picker.  That said, inserting a blank seems like a very standard thing to do. If I cannot get this working, I may have to abandon the exploration of PowerApps as tool for building UIs to our SQL Server databases. 

I'd be curious to know if you, or others, are able to replicate this bug when using a SQL Server connection.

Anchov
Multi Super User
Multi Super User

There has been a long-standing issue with Power Apps and dates, specifically with SQL as the data source.  This is an old video, but I have run into similar issues recently as well.
https://www.youtube.com/watch?v=i-nPjyZqXt0

Anchov
Multi Super User
Multi Super User

Something you may try is to make sure the Formula-level error management setting is turned on (I know, not an intuitive setting name)

Thanks for posting that video. It is truly disheartening that it was an issue four years ago and it still remains an issue. As I mentioned, I am new to PA but this along with long standing incompatibility with SQL Server triggers make me suspect that Microsoft had little interest in making PA a viable front end to SQL Server. 

I did experiment with the Formula-level error management setting before starting this thread. It does result in allowing empty/null/blank entries through. BUT, it creates another issue, one that is perhaps more serious than the one I am trying to solve and that is this:

 

When a user enters and invalid date, example "2022-Jan-39" the form quietly writes over the existing date in the database with a Null value. No alert, no warning, date gone, while the user is led to think that they made a successful edit.

 

 

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