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Vanessasec
Frequent Visitor

Create consecutive bookings, detect conflict and make recurring booking

Hi, I need help with power apps please. I'm creating a booking app with SharePoint as my data source. I have 3 columns in SP (ClientName, a single line of text, StartDateTime and EndDateTime both Date and Time. I also have a column for duration to calculate hours booked per day per client.

Requirements:

  1.  User can book consecutive meetings and ensure there is no conflict.
  2. If selected date range has a conflict, I get notification error about the conflict
  3. Recurring bookings can be created

Let’s say I’m bookings for March 2 -5 from at 6am-8pm and make this booking to occur 2x. I need SP to show one entry each from March 2-5 with 6am – 8pm start and end time.

In power apps, I have:
ClientName – dropdown for ClientName
sDate - start date picker  
eDate - end date picker
sTime – dropdown for start time
eTime – dropdown for end time
recurring - text input to enter # of recurrings

On the onSelect of my OK button to submit booking, I have the below:  

Set(Start, sDate.SelectedDate + sTime.Selected.Value);
Set(End, eDate.SelectedDate + sTime.Selected.Value);
Set(varRecord, LookUp('Anchorage', StartDateTime <= Start && EndDateTime > Start || StartDateTime > Start && EndDateTime <= End || StartDateTime < Start && EndDateTime > End));

 ForAll(Sequence(Value(recurring.Text),0, 1) As recurringmeetings, Patch(‘SP’, {ID:varCurrentEvent.ID,’ClientName’: ClientName.Selected.Clients, StartDateTime: sDate.SelectedDate+(recurringmeetings[@Value]*7)+sTime.Selected.Value, EndDateTime:sDate.SelectedDate+(recurringmeetings[@Value]*7)+eTime.Selected.Value})), Notify("Date Conflict, Booking already exist for selected date and time!", NotificationType.Error));

 

Using the above formula, I can see booking for March 2 and March 9 both 6-8am but the rest of the booking within the date range selected is not showing. I should be able to see from March 2-5 then from March 9-12 same time 6-8am.

How can I tweak this formula to show in SP all the time I booked within the selected date. Appreciate all your help. Thanks! 

2 ACCEPTED SOLUTIONS

Accepted Solutions

Hi @Vanessasec :

Usually a thread only solves one problem, because it helps other forum users to find the answers they want more easily.So I advice you do not ask questions continuously in one thread. If you have new questions, please consider creating a new thread.

In addition,I suggest you try this formula:

 

Set(Start, sDate.SelectedDate + sTime.Selected.Value);
Set(End, eDate.SelectedDate + sTime.Selected.Value);
CountRows(Filter(
    ForAll(
        Ungroup(ForAll(
            Sequence(
                Value(recurring.Text),
                0,
                1
            ) As recurringmeetings,
            ForAll(
                Sequence(
                    DateDiff(
                        sDate.SelectedDate,
                        eDate.SelectedDate,
                        Days
                    ) + 1,
                    0,
                    1
                ) As subloop,
                {
                    TheStartDateTime: DateAdd(
                        sDate.SelectedDate,
                        (recurringmeetings[@Value] * 7) + subloop[@Value],
                        Days
                    ) + sTime.Selected.Value,
                    TheEndDateTime: DateAdd(
                        sDate.SelectedDate,
                        (recurringmeetings[@Value] * 7) + subloop[@Value],
                        Days
                    ) + eTime.Selected.Value
                }
            )
        ),"Value") As TheLoopBody,
        LookUp(
            'Anchorage',And(TheLoopBody[@TheStartDateTime]>=StartDateTime,TheLoopBody[@TheStartDateTime]<EndDateTime)||And(TheLoopBody[@TheEndDateTime]>StartDateTime,TheLoopBody[@TheEndDateTime]<=EndDateTime)||And(TheLoopBody[@TheStartDateTime]<=StartDateTime,TheLoopBody[@TheEndDateTime]>=EndDateTime)          
        )
    ),!IsBlank(StartDateTime))
);
If(varRecord=0,
ForAll(
Sequence(Value(recurring.Text),0, 1) As recurringmeetings,
ForAll(
Sequence(DateDiff(sDate.SelectedDate,eDate.SelectedDate,Days)+1,0,1) As subloop,
Patch(
'Anchorage',
{StartDateTime: DateAdd(sDate.SelectedDate,(recurringmeetings[@Value]*7)+subloop[@Value],Days)+sTime.Selected.Value,
EndDateTime:DateAdd(sDate.SelectedDate,(recurringmeetings[@Value]*7)+subloop[@Value],Days)+eTime.Selected.Value
}))),
Notify("Conflict", NotificationType.Error));

 

Best Regards,

Bof

View solution in original post

Vanessasec
Frequent Visitor

Hi Bof, 

Apologies for asking lots of questions on this thread. This is the first time I raised question here and so thankful for your help. The last formula is exactly what I need and worked perfectly. Thank you so much for all your help! You're awesome, you have no idea how much you've helped me. Thanks again 🙂

Best regards
Vanessa



 

View solution in original post

12 REPLIES 12
v-bofeng-msft
Community Support
Community Support

Hi @Vanessasec :

Sorry I can't understand the meaning of this sentence.

"Using the above formula, I can see booking for March 2 and March 9 both 6-8am but the rest of the booking within the date range selected is not showing. I should be able to see from March 2-5 then from March 9 -12 same time 6-8am."

Could you tell me:

  • Whether the record you need to check is stored in "varRecord"?
  • What date range did you choose? What are the values of the variables Start and End?
  • Do you want to view the records in the table Anchorage within the time range you selected?

If so,please try:

Set(
   varRecord,
   LookUp(
      'Anchorage', 
      (StartDateTime <= Start && EndDateTime > Start) || 
      (StartDateTime < End && EndDateTime >= End) || 
      (StartDateTime < Start && EndDateTime > End)
   )
);

Best Regards,

Bof

Vanessasec
Frequent Visitor

Hi Bof, 

 

Thanks for your response. When I try to make booking from March 2 - 5 with 6am-8am time and make recurring 2x,  I would like to show booking each day from March 2, 3, 4, 5 and March 9,10, 11, and 12 with the same time 6am -8am. BUT right now I can only see booking for March 2 and March 9, I can't see any booking for March 2, 3,4,5, 10, 11 and 12

Vanessasec_1-1614663529781.png

Vanessasec_2-1614663703447.png

SharePoint 

Vanessasec_3-1614663811778.png

If there's a way for me to show booking each row for the selected recurring time range, then I won't problem checking for duplicates as well. Hope this makes sense. Appreciate your help. Thanks again!



 

Hi @Vanessasec :

Could you tell me:

  • What is the data source of your "calendar"?
  • You say that the number of results you get is less than expected. So could you tell me how do you call this result?Is it varRecord or ‘SP’?

If it is varRecord.The point is that lookup function will only return one record, not all records that meet the conditions. If you need to get all the records that meet the conditions, you should use filter.

Set(
   varRecord,
   Filter(
      'Anchorage', 
      (StartDateTime <= Start && EndDateTime > Start) || 
      (StartDateTime < End && EndDateTime >= End) || 
      (StartDateTime < Start && EndDateTime > End)
   )
);

If it is ‘SP’.The key is that the value of Sequence(Value(recurring.Text),0, 1) is [1, 2], so the entire loop can only be executed 2 times. So Patch is executed only 2 times, and you can only get two records.

Best Regards,

Bof

 

Vanessasec
Frequent Visitor

Hi Bof, 

Anchorage is my data source. I just SP there to shorten it, sorry for the confusion. 
varRecord is my conflict date range, hence when it's blank I can patch but when it's not it gives me error. 

How can I modify the sequence so it will allow me to show a record for each day of the selected date range? 
How can I set the recurring for it? Thanks again for your help. 

Best regards,
Vanessa

Hi @Vanessasec :

I suggest you replace Lookup with Filter to get multiple records.

Best Regards,

Bof

Vanessasec
Frequent Visitor

Hi Bof, I don't have issue identifying conflict in varRecord. My issue is I cannot show booking for each day within the selected date range. Taking the conflict out of the equation, how can I show bookings for each day of the selected date range and make it recurring? 
I tried to tweak the formula to this: 
ForAll(Sequence(Value(recurring.Text),0, 1) As recurringmeetings, Patch('Anchorage ', {ID:varCurrentEvent.ID,'Client Name': drp_ClientName.Selected.Clients, StartDateTime: sDate.SelectedDate+(recurringmeetings[@Value]*7)+sTime.Selected.Value, EndDateTime:eDate.SelectedDate+(recurringmeetings[@Value]*7)+eTime.Selected.Value})),
I booked March 3- 5, 6am - 8am and make recurring 2 to stand for 2 weeks of same time booking. It worked perfectly on the power apps as I could show booking for each day from March 3-5 and same time booking from March 10-12 but my SharePoint only shows two bookings from March 3-5 and March 10-12 and the duration is 50hrs each. 

How can I tweak the formula so the SharePoint would show same 2hour (6am-8am) booking per day from March 3-5 and from March 10-12? Technically I need Sharepoint to show like this: 

Client

StartDateTime

EndDatetime

Duration

Vanessa

3/05/2021

3/05/2021

2 hour

Vanessa

4/05/2021

4/05/2021

2 hour

Vanessa

5/05/2021

5/05/2021

2 hour

Vanessa

9/05/2021

9/05/2021

2 hour

Vanessa

10/05/2021

10/05/2021

2 hour

Vanessa

11/05/2021

11/05/2021

2 hour

Vanessa

12/05/2021

12/05/2021

2 hour

 
Sorry for all the confusion. Really appreciate your help. 

Best regards,
Vanessa

 

v-bofeng-msft
Community Support
Community Support

Hi @Vanessasec :

I get it.

Firstly,let me explain why you encountered this problem.

The key is that the value of Sequence(Value(recurring.Text),0, 1) is [1, 2], so the entire loop can only be executed 2 times. So Patch is executed only 2 times, and you can only get two records.

Secondly,to solve this problem, you also need to embed a loop.Please try:

ForAll(
   Sequence(Value(recurring.Text),0, 1) As recurringmeetings,
   ForAll(
          Sequence(DateDiff(sDate.SelectedDate,eDate.SelectedDate,Days)+1,0,1) As subloop,
          Patch(
             Anchorage,
            {
             ID:varCurrentEvent.ID,
             'Client Name': drp_ClientName.Selected.Clients, 
             StartDateTime: DateAdd(sDate.SelectedDate,(recurringmeetings[@Value]*7)+subloop[@Value],Days)+sTime.Selected.Value,
             EndDateTime:DateAdd(sDate.SelectedDate,(recurringmeetings[@Value]*7)+subloop[@Value],Days)+eTime.Selected.Value
            }
         )
   )
)

Best Regards,

Bof

Vanessasec
Frequent Visitor

Hi Bof, 

This is brilliant! My recurring booking worked as expected and I'm getting entry for each day booked within the selected time range. However when I tried to put "checking for conflict" option, I'm getting invalid argument and unexpected character error. I tried to change the lookup to filter but it still didn't work. Would you be able to tell me what wrong am I doing, please? 

Set(Start, sDate.SelectedDate + sTime.Selected.Value);

Set(End, eDate.SelectedDate + sTime.Selected.Value);

Set(varRecord, LookUp('Anchorage ', StartDateTime <= Start && EndDateTime > Start || StartDateTime > Start && EndDateTime <= End || StartDateTime < Start && EndDateTime > End));

 

If(IsBlank(varRecord,

ForAll(

   Sequence(Value(recurring.Text),0, 1) As recurringmeetings,

   ForAll(

          Sequence(DateDiff(sDate.SelectedDate,eDate.SelectedDate,Days)+1,0,1) As subloop,

          Patch(

             'Anchorage ',

            {StartDateTime: DateAdd(sDate.SelectedDate,(recurringmeetings[@Value]*7)+subloop[@Value],Days)+sTime.Selected.Value,

             EndDateTime:DateAdd(sDate.SelectedDate,(recurringmeetings[@Value]*7)+subloop[@Value],Days)+eTime.Selected.Value

            })));

            Notify("Date Conflict, Booking already exist for selected date and time!", NotificationType.Error));



Thank you again for your help! Really appreciate it 🙂

Best regards

Vanessa

Hi @Vanessasec :

I think you should have lost a ")"

 

If(IsBlank(varRecord),

 

Best Regards,

Bof

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