How to make Angular ui grid expand all rows initially?

All we need is an easy explanation of the problem, so here it is.

I am using ui grid to show a list of data and I am trying to initially expand all rows.

I am trying to do this in the onRegisterApi event:

scope.GridOptions =
            data: properties,
                { name: "Full Address", field: "FullAddress" },
                { name: "Suburb", field: "Suburb" },
                { name: "Property Type", field: "PropertyType" },
                { name: "Price", field: "Price", cellFilter: 'currency'},
                { name: "Status", field: "Status" },
                { name: "Sale Type", field: "SaleType" }, 
                { name: "Date Created", field: "CreateDate", cellFilter: "date:'dd/MM/yyyy HH:mma'"}
            expandableRowTemplate: 'template.html',
            expandableRowHeight: 200,
            onRegisterApi: (gridApi) => 
                scope.gridApi = gridApi;
                gridApi.expandable.on.rowExpandedStateChanged(scope,(row) =>
                    if (row.isExpanded) {
                        this.scope.GridOptions.expandableRowScope = row.entity;


But the code above does not work. It looks like when I call expandAllRows() the rows are not rendered yet.

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

In my case, the following worked:

    $scope.gridOptions = {
      onRegisterApi: function(gridApi) {
        $scope.gridApi = gridApi;
        $scope.gridApi.grid.registerDataChangeCallback(function() {

Method 2

I find I can expand all rows by using rowsRendered event:

gridApi.core.on.rowsRendered(scope,() => {
        if (!gridApi.grid.expandable.expandedAll && !initialized)
            initialized = true;

I have used a variable initialized to identify if this is the first time rows are rendered as I only want to expand all rows initially.

Method 3

None of the above worked for me for all of my grid use cases.

        $scope.gridApi.grid.registerDataChangeCallback(function() {
            if($scope.gridApi.grid.treeBase.tree instanceof Array){


The following works in every case I have tested. DataChangeCallback is called twice (for some unknown reason) on initial page load. The first time, gridApi.grid.treeBase.tree is an object which causes the issue with gridApi.grid.treeBase.tree.forEach above:

Method 4

None of these answers worked for me, the following did:

scope.gridApi.core.on.rowsRendered(null, () => {

Method 5

The following worked for me, but no guarantee that it won’t break anything… (looks good in my tests):

You need to change the source code, for example in ui-grid.js, i.e. the one your are deploying with your app:

  1. In the addOrUseNode: function(…) inside the createTree: function(…) simply change COLLAPSED to EXPANDED for newNodes:

addOrUseNode: function (grid, row, parents, aggregationBase) {

var newNode = { state: uiGridTreeBaseConstants.EXPANDED, row: row, parentRow: null, aggregations: newAggregations, children: [] };


  1. In module.service(‘uiGridTreeBaseService’… initializeGrid: function(grid) set grid.treeBase.expandAll from false to true (to let the tree know that all rows are expanded on initialitation)

  2. [looks this is optional for the treeView]: Do the same In module.service(‘uiGridExpandableService’, [‘gridUtil’, function (gridUtil) {…} in initializeGrid: function (grid). Change grid.expandable.expandedAll from false to true

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from or, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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