Question

LOANWOLF_BANK_ACCOUNTS_LENGTH = {
        '001': 7,       # Banque de Montréal
        '002': 7,       # Scotia
        '003': 7,       # RBC
        '004': 7 or 11, # TD (7 or 11)
        '006': 7,       # BNC
        '010': 7,       # CIBC
        '016': 9,       # HSBC
        '039': 9,       # Banque Laurentienne
        '614': 10,      # Tangerine
        '815': 7,       # Desjardins
        '829': 7,       # Desjardins Ontario
    }

和

def clean_bank_account(self):
    bank_account = self.form.cleaned_data.get('bank_account')
    bank_transit = self.form.cleaned_data.get('bank_transit')
    if bank_account not in (None, ''):
        bank = self.form.cleaned_data.get('bank')
        if bank not in (None, ''):

            # Check bank account format for specific banks
            length = settings.LOANWOLF_BANK_ACCOUNTS_LENGTH.get(bank)
            if length:
                if bank_transit not in (None, ''):
                    if not bank_account.isnumeric() or length != len(bank_account):
                        if bank == '004':
                            raise ValidationError(
                                _('Bank account number must contain 7 or 11 digits') % length  # noqa
                            )
                        else:
                            raise ValidationError(
                                _('Bank account number must contain %d digits') % length  # noqa
                            )
                else:
                    raise ValidationError(
                        _('Cannot validate bank account without a valid bank transit')  # noqa
                    )
    return bank_account

我想给004提供多个参数，定义，以便length不同于7或11，那么我想显示Bank account number must contain 7 or 11 digits。我怎样才能将多个参数传递给关键字？

Answer 1

我建议您的词典存储<bankId : set>的映射，其中每个集合包含可能的长度：

LOANWOLF_BANK_ACCOUNTS_LENGTH = {
             '001': {7},       # Banque de Montréal
             '002': {7},       # Scotia
             '003': {7},       # RBC
             '004': {7, 11}, # TD (7 or 11)
             '006': {7},       # BNC
             '010': {7},       # CIBC
             '016': {9},       # HSBC
             '039': {9},       # Banque Laurentienne
             '614': {10},      # Tangerine
             '815': {7},       # Desjardins
             '829': {7},       # Desjardins Ontario
         }

您的代码现在需要测试集合成员资格，如下所示：

 ( len(bank_account) not in length )

您还可以使用str.format简化错误处理。

...
if length:
    if bank_transit not in (None, ''):
        if not bank_account.isnumeric() or (len(bank_account) not in length): # this is the important part
            raise ValidationError(
                    _('Bank account number must contain {} digits').format(' or '.join(map(str, length)))  # noqa
                )

    else:
        raise ValidationError(
            _('Cannot validate bank account without a valid bank transit')  # noqa
        )
...

使用字典键的多个值

1 个答案: