How to enable or show total row in footer of ag-grid table

Question

I am working with Ag-Grid table and I want to show the total row in the footer of the table. Some How I achieved it by using 2 tables 1 is for actual data and 2nd is for the Total row.

It's working fine with a Normal non-scrollable table but if it's a pined or scrollable table then the top table scrolls but the bottom one sticks in the same place.

I want to scroll both the table at the same time with the same offset.

For more detail look at the below screenshot which I have the total bottom table.

Normal Table:

You can see in the normal table it's showing total perfectly.

While in the Pinned column table it's not working as expected.

Pinned Column Table:

Look at the scroll bar of both the table.

I want to scroll both the table parallelly.

Or is there any other way to show the Total row other than the dual table?

Please Guide me on this.

Answer 1

Finally, after lots of R&D on the footer total row, I found that we can implement PinnedBottomRow to show our total for the table.

So I dropped the above idea as it's creating a problem with the pinned columns and also managing 2 tables is tricky.

Thanks to AreYouSiries who provided such a nice demo on plucker here

Also Thanks to Ag-Grid for such a nice doc with live examples

My Custom Plucker version for Total Row is here

By following the above examples I am able to achieve my exact requirements and now it's working as expected.

Let me add sort steps to achieve the total row feature in ag-grid:

1st step - Generate Pinned Total Row: Below function will generate an empty target object with all your columns available in the grid.

generatePinnedBottomData(){
    // generate a row-data with null values
    let result = {};

    this.gridColumnApi.getAllGridColumns().forEach(item => {
        result[item.colId] = null;
    });
    return this.calculatePinnedBottomData(result);
}

2nd step Calculate Total for some or all the columns: You need to calculate the total from row data and set the value in the above generated targeted row.

calculatePinnedBottomData(target: any){
        //console.log(target);
        //**list of columns fo aggregation**
        let columnsWithAggregation = ['age']
        columnsWithAggregation.forEach(element => {
          console.log('element', element);
            this.gridApi.forEachNodeAfterFilter((rowNode: RowNode) => {
              //if(rowNode.index < 10){
                //console.log(rowNode);
              //}
                if (rowNode.data[element])
                    target[element] += Number(rowNode.data[element].toFixed(2));
            });
            if (target[element])
                target[element] = `Age Sum: ${target[element].toFixed(2)}`;
        })
        //console.log(target);
        return target;
    }

3rd and last step: Call above generatePinnedBottomData() function where u get your grid data from API or local DB. In the above example, we used to call from onGridReady()

onGridReady(params) {
    this.gridApi = params.api;
    this.gridColumnApi = params.columnApi;
    console.log(this.gridColumnApi.getAllGridColumns())
    this.http
      .get("https://raw.githubusercontent.com/ag-grid/ag-grid/master/packages/ag-grid-docs/src/olympicWinners.json")
      .subscribe(data => {
        this.rowData = data;
        setTimeout(()=>{
          let pinnedBottomData = this.generatePinnedBottomData();
        this.gridApi.setPinnedBottomRowData([pinnedBottomData]);
        }, 500)
      });
  }

You need to assign generated data to the grid.

That's it now you can see your total row pinned at bottom of the grid.

Final Output:

Hope my post will help you to achieve the total row in the grid.