Ngx-datatable: expandAllGroups do not work in row grouping

[lautarobock]

I'm submitting a ... (check one with "x")

[x ] bug report => search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request => Please do not submit support request here, post on Stackoverflow or Gitter

Current behavior
table.groupHeader.expandAllGroups() collapse all groups

Expected behavior
should exand all groups.

Reproduction of the problem
Here is the example. Just the same as your example of row grouping but adding button for expand and collapse.
https://lautarobock.github.io/ngx-datatable-bug-expand-all-groups/

What is the motivation / use case for changing the behavior?
I need this feature working

Please tell us about your environment:

Angular CLI: 1.6.0
Node: 6.11.3
OS: win32 x64
Angular: 5.2.9
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 1.6.0
@angular-devkit/build-optimizer: 0.0.42
@angular-devkit/core: 0.4.6
@angular-devkit/schematics: 0.0.52
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.0
@schematics/angular: 0.1.17
typescript: 2.4.2
webpack: 3.10.0

• Table version: 0.8.x
  "@swimlane/ngx-datatable": "^11.2.0",

• Angular version: 2.0.x
  "@angular/core": "^5.0.0"

• Browser: [all]

• Language: [all]

[lautarobock]

any news?

[sbahramy-turner]

i'm seeing the same. collapseAllGroups() and expandAllGroups() both collapse the groups. Angular 5.2.9, ngx-datatable 11.2.0.

---

A workaround that I found is to simply re-set your rows data. For example, if your rows input property is set as [rows]="items" then just do "this.items = [...this.items]" in your typescript and this seems to expand all row groups.

[Vinoth-deva]

any news?

Hi, is there any ways to get the row is expanded or collapsed in row grouping?