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Odoo 12: How can I update a One2Many field in @api.onchange?

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ti-sq

Hi,

how can I update a stock.move field in sale.order in an onchange method?

I have the following workaround:

@api.onchange("test_field")
def _on_change(self):
    list = []
    for line in self.order_line:
        for move in line.move_ids:
            move.update({'state': 'new_state'}) #not working! -> no error but no change on database
         list.append([1, self._origin.id, line])
self.update({'order_line': list }) #not working! -> error: AttributeError: 'sale.order.line' object has no attribute 'items'

What am I doing wrong here? Is there another possibility to change the move_line state from sale_order??

Thanks!!

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Annuler