python - 以下 Python 代码有什么问题？

Question

我正在尝试为一个字段实现约束但它不会导致约束验证，而是允许保存记录而不显示任何约束消息

def _check_contact_number(self, cr, uid, ids, context=None):
    for rec in self.browse(cr, uid, ids, context=context):
                if rec.contact_number:
                    size=len(str(rec.contact_number))
                    if size<10:
                       return False
            if not contact_number:
            return {}
            contact_number = rec.contact_number.replace('.','') 
#removes any '.' from the string
            contact_number = rec.contact_number.replace(' ','') 
#removes space from the string
            if not  contact_number.isdigit():
            return False
        return {}

    _constraints = [
        (_check_contact_number, 'Enter valid phone number...!', 
['contact_number']),
      ]

请大家指正。非常感谢

Answer 1

这段代码有一个丑陋的缩进。也许这就是原因。正确的标识看起来是这样的:

def _check_contact_number(self, cr, uid, ids, context=None):
    for rec in self.browse(cr, uid, ids, context=context):
        if rec.contact_number:
            size=len(str(rec.contact_number))
            if size<10:
                return False
        if not contact_number:
            return {}
            contact_number = rec.contact_number.replace('.','') 
#removes any '.' from the string
            contact_number = rec.contact_number.replace(' ','') 
#removes space from the string
        if not  contact_number.isdigit():
            return False
        return {}
    _constraints = [
        (_check_contact_number, 'Enter valid phone number...!', ['contact_number']),
      ]