octobercms/october · error · Error

The table client-side data source class "{dataSourceClass}"

Error message

The table client-side data source class "{dataSourceClass}" is not found in the $.oc.table.datasource namespace.

What it means

Error "The table client-side data source class "{dataSourceClass}" is not found in the $.oc.table.datasource namespace." thrown in octobercms/october.

Source

Thrown at modules/backend/widgets/table/assets/js/table.js:149

            var column = this.options.columns[i].key

            this.cellProcessors[column].dispose()
            this.cellProcessors[column] = null
        }

        this.cellProcessors = null
        this.activeCellProcessor = null
    }

    Table.prototype.setColumnConfiguration = function(column, options) {
        this.cellProcessors[column].columnConfiguration = { ...this.cellProcessors[column].columnConfiguration || {}, ...options };
    }

    Table.prototype.createDataSource = function() {
        var dataSourceClass = this.options.clientDataSourceClass

        if ($.oc.table.datasource === undefined || $.oc.table.datasource[dataSourceClass] == undefined)
            throw new Error('The table client-side data source class "'+dataSourceClass+'" is not ' +
                'found in the $.oc.table.datasource namespace.')

        this.dataSource = new $.oc.table.datasource[dataSourceClass](this)
    }

    Table.prototype.registerHandlers = function() {
        this.el.addEventListener('click', this.clickHandler);
        this.el.addEventListener('keydown', this.keydownHandler);
        this.$el.one('dispose-control', this.disposeBound);

        document.addEventListener('click', this.documentClickHandler);

        if (this.options.postback && this.options.clientDataSourceClass == 'client') {
            this.$el.closest('form').bind('oc.beforeRequest', this.formSubmitHandler);
        }

        var toolbar = this.getToolbar();
        if (toolbar) {

View on GitHub (pinned to b608633a7e)

When it happens

Trigger: Thrown at modules/backend/widgets/table/assets/js/table.js:149 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/466205bcd76b9466. Report an issue: GitHub.