Optionally show Summary Row even if no rows present in table.

[CaffGeek]

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Current behavior Summary row only displays if rows exist in table.

Expected behavior Summary row can be optionally shown whether there are rows in the table or not

Reproduction of the problem On a table with a summary row, set the rows collection to empty [] and the summary row disappears.

What is the motivation / use case for changing the behavior? I still want the row showing, as we use it to display information, even if the visible rows collection is empty (for example when it's filtered)

Please tell us about your environment:

• Table version: 13.1

• Angular version: 6.1

• Browser: all

• Language: TypeScript

[CaffGeek]

I'll even modify the code and send a PR if I could find where it chooses to show/hide that...

[NLye]

@CaffGeek did you find a workaround for this? Because I need the same logic, for a custom filter-row which shouldn't hide when no data is present.

The row which causes this is this I guess: https://github.com/swimlane/ngx-datatable/blob/3f5a5a243d0bc545271c96ead2b8f5077c07f30d/src/components/body/body.component.ts#L27

but I have no clue how to modify this for a generic solution...

[carter-dewey]

I tried removing the line "*ngIf="rows?.length" from the compiled javascript in my node_modules but it didn't seem to have any effect.

[carter-dewey]

I found a work around (really a hack) for this by taking advantage of the weird change detection system. So after retrieving a list of row objects I run the following code.

       if(this.rows == null || this.rows.length == 0){
          this.rows = [{
            id : 1,
            name : "My Fake Row",
          }];
          setTimeout(() =>{ this.rows.splice(0,1); }, 1);
        }

Basically if there are no rows I create a fake row and then immediately remove it. This will leave the summary row at the top. A few notes, you must use the set timeout function, and yes it works when the time out is only 1 ms. You must also use the array splice method. Setting the rows array to an empty array will hide the summary row (I.E dont do this.rows = []).