Using button strikethrough property in gallery with Teams Dataverse

[RussW]

I'm trying to find a way to have an end user experience such as the following:

1. A gallery list of items displays
2. User clicks one item in the list and the text gets crossed out
3. User clicks again the same item, and the cross out/strike through disappears

Seems simple, but I'm running into a few road blocks.

What makes up what I've tried so far:

• I started with a single button on a canvas
  • button.strikethrough = varStrike
  • button.onselect = Set(varStrike, If(varStrike,false,true))
  • essentially making varStrike a boolean data type variable
  • this by itself works as expected to strike through the text when clicked and then clear it when clicked again
  • I then ventured to try to duplicate this behavior in a gallery and keep the individual buttons isolated to only strike through those that were clicked
  • this is where I'm stuck

Where I'm at now:

• Gallery is tied to a Teams Dataverse table
• I've added a standard type button in the gallery so I can use the strikethrough property to easily toggle strike through true/false (i.e. button.strikethrough = varStrike)
• I've tried variations of a column data type in my table between Yes/No and Choice, but am at a loss for how to patch that back to the table
• my thought behind a yes/no column was to set them all to No and then toggle to Yes when the button is clicked giving me a value to use for other data validation purpose

What I need is a formula that will do these things:

1. Toggle varStrike true/false
2. Only affect the gallery item clicked
3. Change the yes/no field/column in the table to match varStrike

This is the closest I've gotten, but I'm at a loss for tying together varStrike and the Yes/No column broken down:

Set(varRecord, ThisItem);

• for efficiency as well as avoid gallery selection artifacts - tip found on Youtube

If(varRecord.'Module Course Name'

• button text is set to 'Module Course Name' - to isolate to a given record

&& 'Strike Through (Curriculum timings)'.No

• this is my Yes/No column 'Strike Through' in my table Curriculum timing; it's default state is No

&& varRecord.IsSelected,

• this is my attempt to further isolate to a single record in the gallery

Patch('Curriculum timings', varRecord, {'Strike Through':true})); Set(varStrike, If(varStrike,false,true))

• I can't quite get the format of this to update the option set value for 'Strike Through' AND toggle the varStrike, but what's happening with this is all of the buttons are crossing out and clearing

Any ideas of how I can accomplish this?

[WarrenBelz]

Hi @RussW ,

Try ThisItem.IsSelected in your logic.

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[TheRobRush]

I have a gallery, and it is based on a collection (could be splist either way works) and it is modified to add a column called uniqueid

here is its items property

AddColumns(Ungroup(TicketSurvey,"Questions"),"uniqueID",Rand())

I then Have the onselect of my text box or label that shows item the items info set to

Switch(
    ThisItem.uniqueID in strikelist,
    false,
    Collect(strikelist,{idlist:ThisItem.uniqueID}),
    true,
    RemoveIf(strikelist,idlist=ThisItem.uniqueID))

This creates a temporary collection that it adds to each time an item is clicked and removes it if it already exists in this list.

You could clear out the strikelist every time the gallery is reopened to be sure that you dont have one mark itself as checked off because it was still on list from before but to be honest the chances of runnign into a duplicate with rand would be very small in a single session.

If your datasource has an ID column you can skip the addcolumns bit and just do all this referencing the ID column since it is always unique. to keep track of this over several sessions though you will need a datasource you can store these ids in(or if always on the same device make use of savedata loaddata) otherwise you start from the beginning every time you open the app (if that is your goal then you are now good to go)

[TheRobRush]

 @WarrenBelz solution is much simpler

[RussW]

Hi there Filter by User ,

Thank you for responding. 

Are you suggesting where I have varRecord.IsSelected to change that to ThisItem.IsSelected instead or something else?

Thanks,

Russ

[WarrenBelz]

Hi @RussW ,

Yes - although if this does not do the job, have a look at the post from @TheRobRush 

[RussW]

I was trying to avoid putting stuff in a collection or use "helper" columns if possible.

I was looking to check against the option set value (or Yes/No field in Teams Dataverse speak) to determine the setting of the individual items strikethrough for the button; however, you've given me some ideas to chew on using Switch that might work.

Overall though, it's tough to get the data types matched up correctly in putting the formulas together - I suppose that's why we are kinda forced into including helper columns.

I'll work through adapting that to see if I can get it to work and check back in later.

Thanks.

[RussW]

I appreciate your input WarrenBelz and TheRobRush. I thought the switch idea might prove to work out, but I'm still stuck.

I feel I might have overcomplicated things in my earlier explanation, so let me try to simplify what I'm trying to do and maybe you all can help me craft a way to a resolution.

• I have a gallery tied to a Teams Dataverse data source (Gallery1.Items = Teams Table)
• In the gallery template, I have a button populated with a module name (Gallery1.Button1.Text = ThisItem.'Module Course Name')
• When I click the button, I want to have the strike through property (Gallery1.Button1.Strikethrough) go from false to true or true to false (toggle) - but only for that item

I am at a loss for putting this together - I thought the switch idea could come to something, but I'm still not able to isolate to a single button action.

Please provide any additional insights you might have to solve for this.

Thank you

[TheRobRush]

The switch I shared above, with modification to fit the specific data you are displaying, will accomplish that

[TheRobRush]

you will set strikethrough true/false dependant to a countrows of the thisitem if it is in the collection strikelist made by the onselect