We are currently performing maintenance on Appian Community. As a result, discussions posts and replies are temporarily unavailable. We appreciate your patience.

Pagination Error in Read Only Grid

Hi ! I am facing a pagination issue with Grid Field. 
I need to fetch data from a csv using previewcsvimport  and display it in a grid, batch size 10, but an error pops up when I try to move directly to the last page , only for the files which have (10n +1) number of rows.

  Discussion posts and replies are publicly visible

Parents
  • 0
    Certified Lead Developer

    Can you share the relevant code snippets and the concrete error message?

  • The error displayed is " Error in a!forEach() expression during iteration 1 :Expression evaluation error at function a!gridColumn" 



    local!pagingInfo: a!pagingInfo(startIndex: 1, batchSize: 10),
    local!extractcsvData: previewcsvforimport(
    document: todocument(ri!documentId),
    delimiter: ",",
    charset: "UTF-8",
    numberOfRows: 1000
    ),
    local!rowdata: remove(local!extractcsvData.data, 1),
    local!data: todatasubset(
    arrayToPage: local!rowdata,
    pagingConfiguration: local!pagingInfo
    ),
    local!header: todatasubset(
    arrayToPage: local!extractcsvData.data,
    pagingConfiguration: a!pagingInfo(startIndex: 1, batchSize: 1)
    ),
    local!columns: index(local!header, "data", 1, null),
    {
    a!cardLayout(
    contents: {
    a!gridField(
    labelPosition: "ABOVE",
    data: local!data,
    columns: a!forEach(
    local!columns,
    a!gridColumn(
    label: fv!item,
    value: a!tagField(
    label: fv!row[fv!index],
    tags: a!tagItem(
    text: fv!row[fv!index],
    backgroundColor: "#FFFFFF"
    )
    )
    )
    ),
    pagingSaveInto: local!pagingInfo,
    rowHeader: 1
    )
    }
    )
    }
    )


Reply
  • The error displayed is " Error in a!forEach() expression during iteration 1 :Expression evaluation error at function a!gridColumn" 



    local!pagingInfo: a!pagingInfo(startIndex: 1, batchSize: 10),
    local!extractcsvData: previewcsvforimport(
    document: todocument(ri!documentId),
    delimiter: ",",
    charset: "UTF-8",
    numberOfRows: 1000
    ),
    local!rowdata: remove(local!extractcsvData.data, 1),
    local!data: todatasubset(
    arrayToPage: local!rowdata,
    pagingConfiguration: local!pagingInfo
    ),
    local!header: todatasubset(
    arrayToPage: local!extractcsvData.data,
    pagingConfiguration: a!pagingInfo(startIndex: 1, batchSize: 1)
    ),
    local!columns: index(local!header, "data", 1, null),
    {
    a!cardLayout(
    contents: {
    a!gridField(
    labelPosition: "ABOVE",
    data: local!data,
    columns: a!forEach(
    local!columns,
    a!gridColumn(
    label: fv!item,
    value: a!tagField(
    label: fv!row[fv!index],
    tags: a!tagItem(
    text: fv!row[fv!index],
    backgroundColor: "#FFFFFF"
    )
    )
    )
    ),
    pagingSaveInto: local!pagingInfo,
    rowHeader: 1
    )
    }
    )
    }
    )


Children