@api.onchange('wm_purchase_id')
    def purchase_order_change(self):
        import pdb
        list_move_ids = self.move_lines.ids # Guardo IDS lineas ya cargadas
        if not self.wm_purchase_id:
            return {}
        if not self.partner_id:  # ACTUALIZO PARTNER
            self.partner_id = self.wm_purchase_id.partner_id.id
        # Nuevas lineas
        new_lines = self.env['stock.move']
        date = fields.Datetime.now()
        for line in self.wm_purchase_id.order_line - self.move_lines.mapped(
                'purchase_line_id'):
            # pdb.set_trace()
            data = {
                'name': line.order_id.name + ': ' + line.name,
                'purchase_line_id': line.id,
                'product_id': line.product_id.id,
                'product_uom': line.product_uom.id,
                'product_uom_qty': line.product_qty - line.qty_received,
                'quantity_done': 0.0,
                'date': date,
                'date_expected': date,
                'location_id': self.location_id.id,
                'location_dest_id': self.location_dest_id.id,
                'company_id': self.company_id.id,
                'procure_method': "make_to_stock",
            }
            new_line = new_lines.create(data)
            list_move_ids.append(new_line.id)
        self.move_lines = [(6, 0, list_move_ids)]
        # self.move_lines[0].purchase_line_id.order_id #
        # RELACION CON Orden de Compra #
        # pdb.set_trace()
        self.wm_purchase_id = False
        return {}