如何更新invoice.line数量？

I am trying to create button in Invoice that will update certain field in inovoice lines. I've found how to update field in account.invoice but I am strugling to find right way how to update it in account.invoice.line.

我正在尝试在Invoice中创建按钮来更新inovoice行中的某些字段。我已经找到了如何更新account.invoice中的字段，但我很想找到如何在account.invoice.line中更新它的正确方法。

class accountinvoiceext(models.Model):
    _inherit = ['account.invoice']
    @api.one
    def my_button(self,uid):
        invoice_id = self.id
        #lines = getinvoicelinesbyid(invoice_id)

I am sure there is some proper way how to get invoice.lines related to this invoice, or not ? I've tried _inherit account.invoice.line but then I cannot define button there.

我确信如何获得与此发票相关的invoice.lines有一些正确的方法？我已经尝试了_inherit account.invoice.line，但后来我无法在那里定义按钮。

Second question - what is best way to call some function every time invoice is created ?

第二个问题 - 每次创建发票时，调用某些功能的最佳方法是什么？

1 个解决方案

#1

if you want to add button to change the line. you need to loops the one2many fields in the invoice, and change @api.one to @api.multi, example:

如果要添加按钮来更改线条。你需要循环发票中的one2many字段，并将@ api.one更改为@ api.multi，例如：

@api.multi
def my_button(self):
    for line in self.invoice_line:
         line.write({'your_field': 'your_values'})

and if you want to call this function every invoice is create, you need to modified the create function:

如果要调用此函数，每个发票都是创建的，则需要修改create函数：

@api.multi
def create_project(self,values):
    res = super(SaleOrder, self).create(values)
    res.my_button()
    return res

#1