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janineb
Helper III
Helper III

Avoid saving duplicate records to a SharePoint list

Good day

 

I have an "Event booking app" and need to check 2 fields when submitting to the SharePoint list - i.e. the Date field and the Time field.  One should not be able to submit if those 2 fields have identical data in it.

janineb_0-1706692581142.png

Also, can you perhaps help me with the delegation warning on the gallery?  

Sort(Filter(EventBookingSlots,Date=DatePicker1.SelectedDate), StartTime.Value,SortOrder.Ascending)

 

Thank you

 

10 REPLIES 10
mmbr1606
Super User
Super User

hey @janineb 

 

can you please copy /paste the code from the screenshot so we do not need to retype?

 

thanks in advance

OnSelect of the Submit button:

If(Value(StartTimedd.SelectedText.Value)>Value(EndTimedd.SelectedText.Value),Notify("End Time cannot be less than Start Time",NotificationType.Error), Patch(EventBookingSlots, Defaults(EventBookingSlots),{Date: DatePicker1.SelectedDate, StartTime: StartTimedd.SelectedText, EndTime: EndTimedd.SelectedText, Title: DetailsTxt.Text, EventName: EventnameLbl.Text, Venue: VenueTxt.Text}))

 

On the gallery:

Sort(Filter(EventBookingSlots,Date=DatePicker1.SelectedDate), StartTime.Value,SortOrder.Ascending)

please try this instead:

If(
    Value(StartTimedd.SelectedText.Value) > Value(EndTimedd.SelectedText.Value),
    Notify("End Time cannot be less than Start Time", NotificationType.Error),
    If(
        CountRows(
            Filter(
                EventBookingSlots,
                Date = DatePicker1.SelectedDate,
                StartTime = StartTimedd.SelectedText,
                EndTime = EndTimedd.SelectedText
            )
        ) > 0,
        Notify("Event with the same Date, Start Time, and End Time already exists.", NotificationType.Error),
        Patch(
            EventBookingSlots,
            Defaults(EventBookingSlots),
            {
                Date: DatePicker1.SelectedDate,
                StartTime: StartTimedd.SelectedText,
                EndTime: EndTimedd.SelectedText,
                Title: DetailsTxt.Text,
                EventName: EventnameLbl.Text,
                Venue: VenueTxt.Text
            }
        )
    )
)

 

and this for ur other issue:

Filter(EventBookingSlots, Date = DatePicker1.SelectedDate)

 

Let me know if my answer helped solving your issue.

If it did please accept as solution and give it a thumbs up so we can help others in the community.



Greetings

janineb
Helper III
Helper III

Thank you for the guidance, however I am getting this error:

janineb_1-1706694991073.png

Also, for the gallery - I need to sort the time in descending order for that specific day so I cannot use

Filter(EventBookingSlots, Date = DatePicker1.SelectedDate)

 

 

 

this is no error, its a delegation warning.

 

you can set the delegation limit in the app settings to 2.000 entried (per default its 500).

if you are below the 500 or 2000 entries this should work without problems.

 

what is the gallery in your app called?

janineb
Helper III
Helper III

The gallery is called "galOverview".

 

you can try to just put FilteredEvents in your items Property of your gallery

 

there only the items of the collection called FilteredEvents will show

 

Let me know if my answer helped solving your issue.

If it did please accept as solution and give it a thumbs up so we can help others in the community.



Greetings

janineb
Helper III
Helper III

On this part of your code, I am not too worried about the Delegation warning - but it complains about incompatible type for comparison.  It also says "Countrows" is not supported by this connector

 

 

janineb_0-1706696897235.png

 

please try the modified approach:

If(
    CountRows(
        Filter(
            FilteredEvents,
            StartTime = StartTimedd.SelectedText,
            EndTime = EndTimedd.SelectedText
        )
    ) > 0,
    Notify("Event with the same Date, Start Time, and End Time already exists.", NotificationType.Error),
    Patch(
        EventBookingSlots,
        Defaults(EventBookingSlots),
        {
            Date: DatePicker1.SelectedDate,
            StartTime: StartTimedd.SelectedText,
            EndTime: EndTimedd.SelectedText,
            Title: DetailsTxt.Text,
            EventName: EventnameLbl.Text,
            Venue: VenueTxt.Text
        }
    )
)

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