Hello all, I have a situation in a Canvas App using a date picker where I want to display a message if a user chooses a date that already appears certain number of times in a SharePoint list column. This message asks the user to choose another date. I found this great formula to filter and count appearances of a selected date picker date, and it seems to work well in the Visible property:
Solved! Go to Solution.
Have you tried with putting DefaultDate property of the DatePicker control to blank.
Then you can check as below:
If (
IsBlank(DataCardValue111.SelectedDate)
|| CountRows(Filter('Correspondence/Mail Request Tracker',DataCardValue111.SelectedDate in Text ('ColumnTitle'))) < 6,
false,
true
)
For the submit button of your form, can you try to update the DisplayMode property as:
If (
IsBlank(DataCardValue111.SelectedDate)
|| CountRows(Filter('Correspondence/Mail Request Tracker',DataCardValue111.SelectedDate in Text ('ColumnTitle'))) > 6,
DisplayMode.Disabled,
DisplayMode.Edit
)
This will disable the button if any of the following is true:
- No date selected by user
- Date selected is already in your SharePoint list 6 times.
So you are using a Form right? I this label is from a custom card or from a card data came with the fields selected?
If is a custom card you must control the reset, because is not part of the field and the form is not able to control that. Because i believe that you don't have a Parent.Default value that came from the collection or data source.
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Have you tried with putting DefaultDate property of the DatePicker control to blank.
Then you can check as below:
If (
IsBlank(DataCardValue111.SelectedDate)
|| CountRows(Filter('Correspondence/Mail Request Tracker',DataCardValue111.SelectedDate in Text ('ColumnTitle'))) < 6,
false,
true
)
yep, this is all in a form. That makes sense, but just not sure how to make it reset!
Is there another way to hide the label (other than using the visible property drop down - since it's already in use)?
Thank you
You need to set to false again the label, instead to apply that direct on the visible property, create a global or context variable to handle data, so will be able to hide and show easily.
For example, in the onVisible of the page that load the form you set the variable with your count rows formula, and when you request to reset the form you just need to set to false. you label will work fines in that way.
If my answer helped you, please give me a thumbs up (👍). If solve your question please mark as solution ✔️. This is help the community.
This formula totally worked for me! Thanks so much - I will study it to see if I can also block the form submission based on an "overbooked" selected date
Thanks @happyume
Thanks @Michaelfp, looks like it the formula correction worked! I did set the default date to blank and that likely helped the formula to work as well
Also, if experienced with referencing SharePoint in this way, I do get a "Delegation Warning" :
Can I ignore this if working with small data sets - maybe less t
han 500 rows?
For the submit button of your form, can you try to update the DisplayMode property as:
If (
IsBlank(DataCardValue111.SelectedDate)
|| CountRows(Filter('Correspondence/Mail Request Tracker',DataCardValue111.SelectedDate in Text ('ColumnTitle'))) > 6,
DisplayMode.Disabled,
DisplayMode.Edit
)
This will disable the button if any of the following is true:
- No date selected by user
- Date selected is already in your SharePoint list 6 times.
Delegation warning is a warning and not an error.
You can change settings to 2000, so that impact of delegation is not seen in your App under 2000 rows.
Also update your Visible property of label to below:
If(
With(
{
baseTable:
Filter('Correspondence/Mail Request Tracker',DataCardValue111.SelectedDate in Text ('ColumnTitle'))
},
CountRows(baseTable)
) > 6 || IsBlank(DataCardValue111.SelectedDate) ,
false,
true
)
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