odoo - 将多对多字段显示为多对一

Question

我有一个many2many字段，在特定 View 中我需要将其显示为many2one，或者模仿many2one字段的行为(限制只能添加一条记录，如果用户选择另一条记录，则该记录将被添加)之前选择的将被删除)。在我的观点中声明:

<field name="employee_ids" widget="many2one" />

但它给了我以下错误:

TypeError: 'int' object is not iterable

有什么办法可以实现这一点吗？

Answer 1

我认为你可以强制用户仅选择一条记录 使用 onchange 装饰器:

@api.onchange('employee_ids')
def force_one_selection(self):
    """Force the user to select only one record"""
    if self.employee_ids and len(self.employee_ids) > 1:
        # user has added a new record
        self.employee_ids = [(6, 0, self.employee_ids[0].id)] # you can change the index to 1
        # and you can return a warning here to tell the user that he should not select more than 
        # one record