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Jargonaut
Helper I
Helper I

Dynamically changing order of items in gallery

Hello all,

 

I've got a series of items in a gallery that contain an OrderPosition_Number column. The point of this column is to keep the records in a specific order. But the app needs to allow the user to manually change that order when needed.

 

Given the following table, how would you go about adding 2 icons to a gallery with an arrow up and an arrow down that would allow the user to move the order of it's own number and all the numbers around it? I'm completely stuck I have no idea where to start with this.

 

Example table:

I want the end user to move Tony to number 3, this means Peter and Ruper all have to be kicked down one number. 

NameOrderPosition_Number
Jasper1
Carl2
Peter3
Rupert4
Tony5
1 ACCEPTED SOLUTION

Accepted Solutions
Ramole
Super User
Super User

Hi @Jargonaut 
Please check this video by @developermct   Power Apps: Order or Reorder Items in a List or Gallery 
after you watch, if you don't understand let me know and will help. also once you set up the sort order column it maybe not delegable the one showing on video but I will give you a delegable formula after don't worry.

 

CaptureORDER.JPG

Thank you
If this post helps, then Click on the Thumbs Up below . and Accept it as the solution . to help others find helpful.

View solution in original post

7 REPLIES 7
Ramole
Super User
Super User

Hi @Jargonaut 
Please check this video by @developermct   Power Apps: Order or Reorder Items in a List or Gallery 
after you watch, if you don't understand let me know and will help. also once you set up the sort order column it maybe not delegable the one showing on video but I will give you a delegable formula after don't worry.

 

CaptureORDER.JPG

Thank you
If this post helps, then Click on the Thumbs Up below . and Accept it as the solution . to help others find helpful.

@Ramole it looked like it was working at first but it actually isn't working all the time.

 

half the times when I click either up or down the order number goes down for a split second but returns to where it was.

 

Any ideas?

 

Patch(
    'impact_management.master_question_list',
    ThisItem,
    {
        temp_order_position: ThisItem.temp_order_position + 1.5
    }
);
// 
// Put all the rows of data here and put it in a temporary collection
//
ClearCollect(
    colTempStatuses,
    Sort('impact_management.master_question_list'

        , 
        temp_order_position
    )
);
// 
// Loop through all the values in our temp collection and assign whole numbers 
// in sequence starting with 1, and so on. 
//
ForAll(
    Sequence(CountRows(colTempStatuses)),
    Patch(
        colTempStatuses,
        Index(Sort(colTempStatuses, SortOrder), Value),
        {
            temp_order_position: Value 
        }
    );
);
// 
// Update the data in SharePoint
//
Patch(
    'impact_management.master_question_list',
    colTempStatuses
);

 

Regards

@Jargonaut 

I am not near computer at moment but will have look you code later and amended then will share with 

 

Thank you
If this post helps, then Click on the Thumbs Up below . and Accept it as the solution . to help others find helpful.

@Jargonaut 

Here is a working code but please modify according to you DataSource and column names, let me know how it went.


ArrowUp

 

Patch(
    RequestPriorities,
    ThisItem,
    {
        SortOrder: ThisItem.SortOrder - 1.5
    }
);
// 
// Put all the rows of data here and put it in a temporary collection
//
ClearCollect(
    colTempPriorities,
    Sort(
        DropColumns( 
            RequestPriorities,
            "{VersionNumber}", 
            "Modified"
        )
        , 
        SortOrder
    )
);
// 
// Loop through all the values in our temp collection and assign whole numbers 
// in sequence starting with 1, and so on. 
//
ForAll(
    Sequence(CountRows(colTempPriorities)),
    Patch(
        colTempPriorities,
        Index(Sort(colTempPriorities, SortOrder), Value),
        {
            SortOrder: Value 
        }
    );
);
// 
// Update the data in SharePoint
//
Patch(
    RequestPriorities,
    colTempPriorities
)
//END OF CODE =============================================

 


ArrowDown

 

//CODE =============================================
// 
// This patch will move any item one slot higher by subtracting the value of 1.5
//
Set(
    gblShowSpinner,
    true
);
Patch(
    RequestPriorities,
    ThisItem,
    {
        SortOrder: ThisItem.SortOrder + 1.5
    }
);
// 
// Put all the rows of data here and put it in a temporary collection
//
ClearCollect(
    colTempPriorities,
    Sort(
        DropColumns( 
            RequestPriorities,
            "{VersionNumber}", 
            "Modified"
        )
        , 
        SortOrder
    )
);
// 
// Loop through all the values in our temp collection and assign whole numbers 
// in sequence starting with 1, and so on. 
//
ForAll(
    Sequence(CountRows(colTempPriorities)),
    Patch(
        colTempPriorities,
        Index(Sort(colTempPriorities, SortOrder), Value),
        {
            SortOrder: Value 
        }
    );
);
// 
// Update the data in SharePoint
//
Patch(
    RequestPriorities,
    colTempPriorities
);
//END OF CODE =============================================

 

 

Thank you
If this post helps, then Click on the Thumbs Up below . and Accept it as the solution . to help others find helpful.

@Jargonaut 
Did you get the idea?

Thank you
If this post helps, then Click on the Thumbs Up below . and Accept it as the solution . to help others find helpful.
rcallan
Frequent Visitor

Hi Jargonuat,

 

I assume at this stage you have a working solution but for anyone else looking for a solution I have devised a neater solution

 

As we are either moving one position up or one position down, I'm using variables to store the current and new position, then patch the 2 items to be switched with the other items position. Here is the full solution

 

Gallery Items

Sort(
    [YourSource],
    [YourOrderColumn]
)

 

Up Arrow - OnSelect

UpdateContext(
    {
        varCurrentOrderPos: ThisItem.[YourOrderColumn],
        varNewOrderPos: ThisItem.[YourOrderColumn]-1 //current position - 1
        
    }
);
//Increase Order of Previous item by 1
Patch(
    [YourSource],
    LookUp(
        [YourSource],
        [YourOrderColumn] = locNumberNewOrderPos
    ),
    {
        [YourOrderColumn]: locNumberCurrentOrderPos,
    }
);
//Decrease Order of Current Item by 1
Patch(
    [YourSource],
    ThisItem,
    {
        [YourOrderColumn]: locNumberNewOrderPos
    }
);

 Up Arrow - Visible

ThisItem.[YourOrderColumn] > 1 //hide if item is first

 

Down Arrow - On Select

UpdateContext(
    {
        varCurrentOrderPos: ThisItem.[YourOrderColumn],
        varNewOrderPos: ThisItem.[YourOrderColumn]+1 //current position + 1
        
    }
);
//Decrease Order of Next Item by 1
Patch(
    [YourSource],
    LookUp(
        [YourSource],
        [YourOrderColumn] = locNumberNewOrderPos
    ),
    {
        [YourOrderColumn]: locNumberCurrentOrderPos,
    }
);
//Increase Order of Current Item by 1
Patch(
    [YourSource],
    ThisItem,
    {
        [YourOrderColumn]: locNumberNewOrderPos
    }
);

 Down Arrow - Visible

ThisItem.[YourOrderColumn] < [YourSource].AllItemsCount //Use variable to store total rows to avoid delegation warning

 

fvfd67100
Regular Visitor

Hello, Can you tell me how and where did you set this ?

locNumberNewOrderPos

I am trying to do this with Dataverse and at the moment it's not working

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