Question

如何克隆express-validator链并使其成为可选项，而不影响原始链？例如，请考虑以下示例：

var checkPassword = body('password').trim().isLength({min: 10});
var checkPasswordOptional = checkPassword.optional();

// Creates an account.
router.post('/accounts', checkPassword, createAccount);

// Updates an account. Only provided fields are updated.
router.put('/accounts/:id', checkPasswordOptional, updateAccount);

但有了这个，checkPassword和checkPasswordOptional都会成为可选项。

Answer 1

克隆链尚不支持。

但是，您可以使用可以根据需要多次生成相同验证器链的工厂函数：

const createPasswordCheck = () => body('password').trim().isLength({ min: 10 });

// Uses the default password validation chain    
router.post('/accounts', createPasswordCheck(), createAccount);

// In addition to the default set of password validations,
// updating an account also makes it optional.
router.put('/accounts/:id', createPasswordCheck().optional(), updateAccount);

_{免责声明：express-validator维护者在这里。}

克隆并修改`express-validator`链

1 个答案: