@api.onchange is not triggered when the value is set in python

Question

Setting a *field* value in python (i.e., action button) does not trigger *@api.onchange('field')*.
do I need to use a decorator or something?
Any help would be appreciated

Begineer · Answer

Hi,
You don't need api.onchange for date alone. You can do it in your button action as below,
@api.multi
def action_draft(self):
for each in self:
each.state = 'draft'
each.draft_date =  *fields.Date.context_today(self)*
return True

Mohammad M. Shahbazi · Answer

I have an action button that calls the following function in python:
*def action_draft(self):*
*    self.state = 'draft'*
and want to set *draft_date* once the state is set as draft. like this:
*@api.onchange('state')*
*def _onchange_state(self):*
*    if self.state == 'draft':*
*        self.draft_date = fields.Date.today()*

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