Grouping

GroupingAggregationTemplate

The GroupingAggregationTemplate type defines the structure of aggregation functions that can be used for grouping in a RevoGrid.

/**
 * The `GroupingAggregationTemplate` type defines the structure of aggregation functions
 * that can be used for grouping in a RevoGrid.
 */
export type GroupingAggregationTemplate =  {
  aggregations?: { [key: string]: (values: any[]) => any };
}

---

groupingAggregation

The groupingAggregation function is a template for creating custom aggregation functions that can be used for grouping in a RevoGrid.

This function takes a template object with an optional aggregations property, which is a key-value pair where the key is the column property name and the value is an aggregation function. The aggregation functions receive an array of values and return a single aggregated result.

Example

const aggregations = {
  'name': (values: string[]) => values.join(', ')
}

const template: GroupLabelTemplateFunc = (h, props) => {
  return groupingAggregation(h, props, aggregations);
}

const grid = document.createElement('revo-grid');
grid.columns = [
  { prop: 'name', name: 'Name', template: template }
]

groupingAggregation: GroupLabelTemplateFunc;