UI-grid grouping auto expand

Question

Does anybody know how to automatically expand a UI-grid that is performing a grouping? I need the grid to open up and start up with it being completely expanded.

Their API and Tutorial reference doesn't explain explicitly enough for me to understand.

My HTML div

<code>
&lt;div id="grid1" ui-grid="resultsGrid" class="myGrid" ui-grid-grouping&gt;&lt;/div&gt;
</code>

My Javascript

    
    $scope.resultsGrid = {
      ,columnDefs: [
      { field:'PhoneNum', name:'Phone'},
      { field:'Extension', name:'Extension'},
      { name:'FirstName'},
      { field:'DeptDesc', grouping: {groupPriority: 0}} 
      ]
    ,onRegisterApi: function(gridApi)
      {
      $scope.gridApi = gridApi;
      }
    }
    
    

Answer 1

you just need to add

//expand all rows when loading the grid, otherwise it will only display the totals only
      $scope.gridApi.grid.registerDataChangeCallback(function() {
          $scope.gridApi.treeBase.expandAllRows();
        });

in your onRegisterApi: function(gridApi)that should be updated like this onRegisterApi: function(gridApi) so your function will be like this

$scope.resultsGrid.onRegisterApi = function(gridApi) {       
      //set gridApi on scope
      $scope.gridApi = gridApi;

      //expand all rows when loading the grid, otherwise it will only display the totals only
      $scope.gridApi.grid.registerDataChangeCallback(function() {
          $scope.gridApi.treeBase.expandAllRows();
        });
    };

or you can add botton to expand data like shown in this plunker