Hi, how do we set form's is valid state when returning from on_change function in the server side; all I have seen is using pop up warning. but user still can press the save button.
instead of just a warning/error message I want to set the is valid flag of the form so user cannot submit the form.
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|Asked: 7/31/13, 5:06 AM|
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|Last updated: 3/16/15, 8:10 AM|