Collapse / Expand grouping feature in a grid

[maxritti]

Hi,
in my application there's a center region which contains a grid with groupingFeature.
After showing this all Groups are collapsed. Now i would like to integrate a button in toolbar where user can collapse/expand all groups.

I found this post and used code from #2 but it doesn't work.

http://www.sencha.com/forum/showthread.php?143617-Grids-CollapseAllGroups-amp-ExpandAllGroups


FF shows this error:

view.el is undefined

Can anybody help?

[maxritti]

Hi,

i found another link for my problem but it doesn't work.

http://www.fusioncube.net/index.php/...-with-checkbox

But in firefox console i see this message

view is null
view.el.query('.x-grid-group-hd').forEach(function(group) {

after using this line

myGrid.view.expandAllGroups();

Is there any solution for that?