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CarlHRVA
Continued Contributor
Continued Contributor

Collection inside of a gallery on combobox

Hi all, 


I have been struggling with this for weeks and decided to finally come ask for help. I have a Gallery that displays a list of "errors" and I would like to be able to "tag" each error with any number of different available tags and then relate/unrelate them using Power Automate. To do this, I have a ComboBox added to each row of the Gallery where they can select multiple "tags" associated with that "error". What I am trying to do and can't seem to get to work correctly, is that each time a "tag" is added or removed (OnChange) from the ComboBox.SelectedItems, I would like to add or remove it from the collection appropriately. After I do so, I will pass the collection as a JSON package to Power Automate, where I will compare it to existing tags to know whether to relate/unrelate the tags. My most recent iteration of the formula which is not working is below. Any help would be greatly appreciated as I have tried many different ways with no success. Thanks!


ForAll(ComboBox1.SelectedItems, 

If(

Not(ComboBox1.Selected.Name in collectionOfTags.TagName),

Collect(collectionOfTags,

{

   ErrorGuid: ThisItem.ErrorGuid,

   TagName: ComboBox1.Selected.Name

}),

RemoveIf(

collectionOfTags,

Not(TagName in ComboBox1.Selected.Name)

)

)

 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
RandyHayes
Super User
Super User

@CarlHRVA 

You are using your ForAll's like For Loops...which they are not!  They are functions that return tables.  PowerApps does not have a for loop kind of function like in some development language, because PowerApps is not development!

 

Your Gallery already serves as a collection/table and has all the values already in it.  Duplicating them into a separate collection is just extra work and more memory consumption.

 

What I am not understanding from your formula, in context to the gallery and all the combobox selections, is why you would be adding to a table and then removing from a table.  It would seem that as you "process" one row of data (i.e. combobox) from your gallery, it may remove a tag that was selected in a prior row of the gallery.

 

Can you expand your logic there in context to all the records in your gallery?

_____________________________________________________________________________________
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View solution in original post

6 REPLIES 6
CarlHRVA
Continued Contributor
Continued Contributor

This isn't working as it's written but maybe I need to use some type of ForAll on the Gallery to get each rows selected items into the collection? 

 

 

ForAll(Gallery1.AllItems As GalleryItem,
ForAll(GalleryItem.ComboBox1.SelectedItems As Current Record,
If(
Not(CurrentRecord.Name in collectionOfTags.Name),
Collect(collectionOfTags, 
 {
  Name: CurrentRecord.Name, 
  Item: [@ModelDrivenFormIntegration].Item.ID
 }
), Remove(collectionOfTags, Name <> CurrentRecord.Name)
     ) 
   )
  )
)

 

 

 

RandyHayes
Super User
Super User

@CarlHRVA 

You are using your ForAll's like For Loops...which they are not!  They are functions that return tables.  PowerApps does not have a for loop kind of function like in some development language, because PowerApps is not development!

 

Your Gallery already serves as a collection/table and has all the values already in it.  Duplicating them into a separate collection is just extra work and more memory consumption.

 

What I am not understanding from your formula, in context to the gallery and all the combobox selections, is why you would be adding to a table and then removing from a table.  It would seem that as you "process" one row of data (i.e. combobox) from your gallery, it may remove a tag that was selected in a prior row of the gallery.

 

Can you expand your logic there in context to all the records in your gallery?

_____________________________________________________________________________________
Digging it? - Click on the Thumbs Up below. Solved your problem? - Click on Accept as Solution below. Others seeking the same answers will be happy you did.
NOTE: My normal response times will be Mon to Fri from 1 PM to 10 PM UTC (and lots of other times too!)
Check out my PowerApps Videos too! And, follow me on Twitter @RandyHayes

Really want to show your appreciation? Buy Me A Cup Of Coffee!
CarlHRVA
Continued Contributor
Continued Contributor

Hi @RandyHayes ,

 

Thank you for your response and explanation, that makes a lot of sense. So this App is used as an embedded canvas for a Model Driven form. My thought process is that I want to pass all selected tags to Power Automate as a Collection with the context of the Error that they're associated with and then use this Collection in Power Automate to compare against the existing tags/errors to know which tags to add or remove from the table. Depending on the status of the Item in the Model Driven. 
Step 1: They visit the Form and the item is in a "New" state (Entity 1, "item"), All errors (entity 2, "templates") can be selected and marked as present and all tags (entity 3, "static tag choices") can be applied.  All Errors that are marked present and any tags that they applied to those errors will need to be created (entity 4, "errors", entity 5, "Tag instances")

Step 2: Someone comes in to review the errors, marks them resolved and the item moves forward in the workflow

Step 3: The original person who marked those errors (entity 4, "errors") present and tagged (entity 5, "instances")them, can come review the corrections and either confirm that they are corrected or mark them as still present. At this stage they could apply additional or remove any existing tags for all errors. This is why I was trying to remove items from the collection after they were removed from the SelectedItems, so that when I compare in Power Automate I will see that the error previously had a tag associated with it that has now been removed.

 

Hopefully that makes sense...I think using the Gallery as the table/collection is the correct path but now I am wondering how I extract those values. I used this formula: ClearCollect(collectionOfTags, Gallery1.AllItems.ComboBox1_6); I am not able to select an properties associated with the Combobox and my collection just returns [Control] for the column. Thank you so much for your help.

CarlHRVA
Continued Contributor
Continued Contributor

@RandyHayes Trying two ways and both are unsuccessful. I'm getting the ID from the model driven form integration just fine but Name is coming up blank. Any extra help would be greatly appreciated!

 

 

ClearCollect(collectionOfTags, Gallery2.AllItems.ComboBox1_6);
ClearCollect(finalCollectionOfTags, Blank());

ForAll(collectionOfTags,Collect(finalCollectionOfTags, {Name: [@ComboBox1_6].Selected.Name, Item: [@ModelDrivenFormIntegation].Item.ID}))

//or

ClearCollect(collectionOfTags, Gallery2.AllItems.ComboBox1_6);
ClearCollect(finalCollectionOfTags, Blank());

ForAll(collectionOfTags,Collect(finalCollectionOfTags, {Name: [@ThisRecord].Name, Item: [@ModelDrivenFormIntegation].Item.ID}))

 

 

CarlHRVA
Continued Contributor
Continued Contributor

This *sort of* works, but it does not Collect all of the selected tags.

ForAll(collectionOfTags,Collect(finalCollectionOfTags, {Name: ComboBox1_6.Selected.Name, Item: [@ModelDrivenFormIntegation].Item.ID}))
CarlHRVA
Continued Contributor
Continued Contributor

Okay, I've come up with the solution below, thanks to @RandyHayes advice on using my Gallery as my base table/collection. OnSelect of my Submit button:

 

Clear(collectionOfTags);
ForAll(
   Gallery2.AllItems,
   Collect(
      collectionOfTags,
      {
         TagName: Concat(ComboBox1_6.SelectedItems, Name & ";"),
         Item: [@ModelDrivenFormIntegation].Item.ID 
      }

   )
)

 

 

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