validation - 在 Odoo 的模型中添加验证

Question

我有一个包含以下字段的模型 student。

class Student(models.Model):
    _name = "student"
    name = fields.Char(string='Name', required=True)
    nid = fields.Char(string='NID', required=True)

我需要确保 name 只包含 10-15 个字母和空格 并且 nid 以 大写字母开头, 后跟 12 个数字并以大写字母结尾。这可以直接在模型中完成吗？

Answer 1

是的，您可以使用装饰器 @api.constrains('field1', 'field2') 添加此约束如果其中一个字段(在传递的字段列表中)发生更改，女巫将告诉 Odoo 触发此方法。

在这种情况下，使用正则表达式 (re) 模块将节省大量输入。

    import re  # for matching

    class Student(models.Model):
        _name = "student"

        name = fields.Char(string='Name', required=True)

        nid = fields.Char(string='NID', required=True)

        @api.constrains('name')
        def check_name(self):
            """ make sure name 10-15 alphabets and spaces"""
            for rec in self:
                # here i forced that the name should start with alphabets if it's not the case remove ^[a-zA-Z]
                # and just keep:  re.match(r"[ a-zA-Z]+", rec.name)
                if not 10 <= len(rec.name) <= 15 or not re.match(r"^[a-zA-Z][ a-zA-Z]*", rec.name):
                    raise exceptions.ValidationError(_('your message about 10-15 alphabets and spaces'))

        @api.constrains('nid')
        def check_nid(self):
            """ make sure nid starts with capital letter, followed by 12 numbers and ends with a capital letter"""
            for rec in self:
                if not re.match(r"^[A-Z][0-9]{12}[A-Z]$", rec.nid):
                    raise exceptions.ValidationError(_('your message about capital letter, followed'
                                                       'by 12 numbers and ends with a capital letter')