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Power Platform Community / Forums / Power Apps / Add / Remove items fro...
Power Apps
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Add / Remove items from a Collection based on Visible Property

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Posted on by Community Power Pla... Microsoft Employee

I'd like to build a progress bar based on how many questions a user has completed thus far in a 40-50 field form. Every field is required. I've set the asterisks of each card to visible=false when a user enters data. 

 

My thought is that I'll base the progress bar on the # of asterisks that are visible. I can't figure out how to accomplish this. I think the solution is something like: 

 

When screen loads: 

ClearCollect(colProgress, 

    {field: name, vis: If( name_star.visible, 0,1)},

    {field: date, vis: If( date_star.visible, 0,1)},

    {field: size, vis: If( size_star.visible, 0,1)},

    {field: pattern, vis: If( pattern_star.visible, 0,1})

 )

 

The Textbox/Shape for the progres bar is:

 

Sum(colProgress.vis,vis)

 

This all works great, however:

 

My problem:

  • How do I update the collection when a field is completed by user and the asterisk disappears? 
    • I don't want to ClearCollect each time a field is completed, this I think will affect performance. 

Any ideas? 

Categories:
Building Power Apps
  • dinusc Profile Picture
    dinusc Microsoft Employee on at

    Hello Eric,I will start by saying that I don't think running ClearCollect on 50 rows will be a performance issue even on an oldest mobile device that supports PowerApps.

    If you still want to update a collection, have you considered "Update" function? Something like:

    Update(colProgress, LookUp(colProgress, field=date), {field: date, vis: If( date_star.visible, 0,1)})

     

  • Verified answer
    Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    Hi @dinusc. Thank you very much for the response. I did indeed end up using various combinations of Update in the OnChange Property. 

     

    For Person Lookup fields: 

    If(
 IsBlank(name.Selected.DisplayName), 
 Update(
 colProgressBar,
 First(
 Filter(
 colProgressBar,
 field = "name")),
 {field: "name", vis: 0}),
 Update(
 colProgressBar,
 First(
 Filter(
 colProgressBar,
 field = "name")),
 {field: "name", vis: 1})
)

    For DateTime dropdowns, I put the following code in all 3 fields (datepicker, hour, minute dropdowns):

    If(
 Or(
 IsBlank(date_datepicker),
 hour.Selected.Value = " ",
 minute.Selected.Value = " "),
 Update(
 colProgressBar,
 First(
 Filter(
 colProgressBar,
 field = "date")),
 {field: "date", vis: 0}),
 Update(
 colProgressBar,
 First(
 Filter(
 colProgressBar,
 field = "date")),
 {field: "date", vis: 1})
    )

     

     

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