octobercms/october · error · Error

The row attribute {keyColumn} is not set for the row #{i}

Error message

The row attribute {keyColumn} is not set for the row #{i}

What it means

Error "The row attribute {keyColumn} is not set for the row #{i}" thrown in octobercms/october.

Source

Thrown at modules/backend/widgets/table/assets/js/table.js:370

        for (var i = 0, len = headerCells.length; i < len; i++) {
            if (dataCells[i]) {
                dataCells[i].setAttribute('style', headerCells[i].getAttribute('style'));
            }
        }
    }

    Table.prototype.buildDataTable = function(records, totalCount) {
        var dataTable = document.createElement('table'),
            tbody = document.createElement('tbody'),
            keyColumn = this.options.keyColumn

        dataTable.setAttribute('class', 'data')

        for (var i = 0, len = records.length; i < len; i++) {
            var row = document.createElement('tr')

            if (records[i][keyColumn] === undefined)
                throw new Error('The row attribute '+keyColumn+' is not set for the row #'+i);

            row.setAttribute('data-row', records[i][keyColumn])
            for (var j = 0, colsLen = this.options.columns.length; j < colsLen; j++) {
                var cell = document.createElement('td'),
                    dataContainer = document.createElement('input'),
                    cellContentContainer = document.createElement('div'),
                    column = this.options.columns[j],
                    columnName = column.key,
                    cellProcessor = this.getCellProcessor(columnName)

                cell.setAttribute('data-column', columnName)
                cell.setAttribute('data-column-type', column.type)

                dataContainer.setAttribute('type', 'hidden')
                dataContainer.setAttribute('data-container', 'data-container')
                dataContainer.value = this.formatDataContainerValue(records[i][columnName])

                cellContentContainer.setAttribute('class', 'content-container')

View on GitHub (pinned to b608633a7e)

When it happens

Trigger: Thrown at modules/backend/widgets/table/assets/js/table.js:370 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of octobercms/october@b608633a7e (2026-08-21). Data as JSON: /api/errors/83006ac8356d96b8. Report an issue: GitHub.