Posted 15 June 2021, 4:02 am EST
Hi Rusty,
Since getDisplayValues is a regular function in javascript you may access the column properties as close inside the getDisplayValues like:
var theGrid = new wijmo.grid.FlexGrid('#app', {
autoGenerateColumns: false,
columns: [
{ binding: 'country', header: 'Country' },
{ binding: 'city', header: 'City' }
],
itemsSource: getData()
});
// create map
var cityMap = new DataMap(getCities(), 'id', 'name');
// override getDisplay values
cityMap.getDisplayValues = function(rowDataItem) {
console.log(rowDataItem);
// access column properties
let col = theGrid.columns.getColumn("city");
console.log(col.binding);
let validCities = getCities().filter(
city => city.country == rowDataItem.country
);
return validCities.map(city => city.name);
};
// assign data map
theGrid.columns.getColumn("city").dataMap = cityMap;
Regards