javascript - Expand all grid rows by default with rowexpander - EXTJS 5 -

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i using rowexpander plugin in grid.

to expand , collapse rows use rowexpander override: https://www.sencha.com/forum/showthread.php?280175-issue-with-expand-all-when-using-rowexpander-bufferedgrid

however, grid must have on render rows expanded.

i tried solution of following fiddle, without success, giving error:

"uncaught typeerror: cannot read property 'hascls' of null"

any idea how solve this?

fiddle: https://fiddle.sencha.com/#fiddle/10bg

edit: remove comments on lines 99 , 100.

you can try using viewready event (instead of afterrender):

fires when grid view available (use selecting default row).

working example: https://fiddle.sencha.com/#fiddle/10bt


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