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Marine_C
Frequent Visitor

Auto incrementing IDs with prefix (prefix from Dropdown list)

Hello, 

I am a PowerApps beginner and I struggle to automatically generate an ID, which starts with a prefix.

Background is that I have a screen which is a new inspection form where the user can enter his findings. The form includes different data cards but the ones that are currently interesting for me are the following:

 

Component (Dropdown list) with the following entries:

A: Module1 

B: Module2

C: Module3

😧 Module4

 

ID (Text input):

Here I want to generate the automatic ID in the following format: 

Split(Dropdown.Selected.Value, ":") and 00xx

 

For example, if my list looks like:

ComponentID
A: Module1A001
C: Module3C001
A: Module2A002
A: Module2A003
😧 Module4D001

 

If the user enters a new finding and selects from the Component dropdown list: "A: Module1", I would like the ID "A004" to be automatically generated and visible in my Text Input ID (user should not be able to edit it).

If user chooses from the dropdown list "C: Module3", then "C002" should be generated, etc.

 

There are two steps to generate my ID, the first one being the split of dropdown.selected.value on ":" to keep only the first left character, the second being the incrementation but despite trying, I couldn't find a way to code it properly... 

 

Any help would be very much appreciated 🙂

1 ACCEPTED SOLUTION

Accepted Solutions
WarrenBelz
Most Valuable Professional
Most Valuable Professional

Hi @Marine_C ,

You did not state your data source here, but assuming SharePoint, you will have to call the column something other than ID (I have used IDField below). I have also assumed .Value as the output of the drop-down. I cannot test this, but it should be close to what you need

With(
   {
      wComp:
      Left(YourDropdown.Selected.Value,1)
   },
   With(
      {
         wLast:
         Lookup(
            Sort(
               YourListName,
               ID,
               Descending
            ),
            StartsWith(
               Component,
               wComp
            )
         ).IDField
      },
      wComp & 
      Text(
         Value(
            Right(wLast,3)
         ) + 1,
         "000"
      )
   )
)

 

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

Visit my blog Practical Power Apps

View solution in original post

9 REPLIES 9
anibra
Helper V
Helper V

Where do the drop-down values come from? table, collection or they are fixed values?

Marine_C
Frequent Visitor

Dropdown values are fixed values (In the Items property, I've defined the different entries 

Items = ["A: Module1","B: Module2","C: Module3", "D : Module4"])

WarrenBelz
Most Valuable Professional
Most Valuable Professional

Hi @Marine_C ,

You did not state your data source here, but assuming SharePoint, you will have to call the column something other than ID (I have used IDField below). I have also assumed .Value as the output of the drop-down. I cannot test this, but it should be close to what you need

With(
   {
      wComp:
      Left(YourDropdown.Selected.Value,1)
   },
   With(
      {
         wLast:
         Lookup(
            Sort(
               YourListName,
               ID,
               Descending
            ),
            StartsWith(
               Component,
               wComp
            )
         ).IDField
      },
      wComp & 
      Text(
         Value(
            Right(wLast,3)
         ) + 1,
         "000"
      )
   )
)

 

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

Visit my blog Practical Power Apps

anibra
Helper V
Helper V

Hi @Marine_C ,

assuming that you are showing the selected dropdown values and generated values in a gallery, my suggestion is as follows:

In the onChange property of the dropdown define the formula: 

Collect(
var_list,
{
DD: Dropdown2.SelectedText.Value,
Id: First(
Split(
Dropdown2.SelectedText.Value,
":"
)
).Result & "00" & CountRows(
Filter(
Gallery6.AllItems,
Title4.Text = Dropdown2.SelectedText.Value
)
) + 1
}
);

 

anibra_0-1655711812221.png

 

Hi @WarrenBelz,

Thanks for the reply! You assumed right, my data source is a Sharepoint list and the .Value is the output I get from the dropdown (example: "A: Module1")

 

I have renamed my column "ID" to "IDField" as you did, for me to understand your code. But I was wondering what is "ID" in your code then? 

 

Moreover, I tested the code and got the following error:

Marine_C_0-1655717415933.png

DataCardValue7_2 being my Text Input, where I want to display my final ID:

Marine_C_1-1655717489482.png

 

Put I used your code in the Default property of the Text Input, maybe it is where there is the error...

 

Hi @anibra 

Thanks for the inputs! My screen looks like this:

Marine_C_2-1655717628506.png

And I basically try to generate the automatic ID in the "IDField", which is a Text Input.

 

From your code, I guess only the CountRows() part needs to be adjusted (?) (where there is a reference to the Gallery)

anibra
Helper V
Helper V

@Marine_C  Instead of the gallery you can use your sharepoint list and instead of the collection var_list use set to set a variable which will be the Text value of your label. You need to count the available rows in order to know which id to generate

WarrenBelz
Most Valuable Professional
Most Valuable Professional

Hi @Marine_C ,

Firstly, please tag whoever you want to assist you here - three-way conversations just confuse everyone.

The ID is the ID column in SharePoint which I am simply sorting on Descending on to get the newest record (and hence the largest number) and then filtering on the prefix to get the right item. Also, if you want code examined, please post the entire actual code you are using in Text as well as what the error is stating. Before you do that, please check that you have applied your values correctly to the code posted as it appears valid to me.

 

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

Visit my blog Practical Power Apps

Marine_C
Frequent Visitor

Hi @WarrenBelz 

Sorry for the three-way conversation, it was indeed hard to follow. I found out where my error was when implementing your code, thanks for the support, it is now working perfectly!

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