我通常对这样的事情使用辅助函数。只是嘲笑这个比我使用的更普遍一点。这个人将采取所有“默认”验证器(必需的,最小值,最大值等),并使它们的信息更漂亮一些(根据下面的messages
对象),并且只提取您在验证器中传递的消息验证。
function errorHelper(err, cb) {
//If it isn't a mongoose-validation error, just throw it.
if (err.name !== 'ValidationError') return cb(err);
var messages = {
'required': "%s is required.",
'min': "%s below minimum.",
'max': "%s above maximum.",
'enum': "%s not an allowed value."
};
//A validationerror can contain more than one error.
var errors = [];
//Loop over the errors object of the Validation Error
Object.keys(err.errors).forEach(function (field) {
var eObj = err.errors[field];
//If we don't have a message for `type`, just push the error through
if (!messages.hasOwnProperty(eObj.type)) errors.push(eObj.type);
//Otherwise, use util.format to format the message, and passing the path
else errors.push(require('util').format(messages[eObj.type], eObj.path));
});
return cb(errors);
}
它可以像这样(快速路由器为例)使用:
function (req, res, next) {
//generate `user` here
user.save(function (err) {
//If we have an error, call the helper, return, and pass it `next`
//to pass the "user-friendly" errors to
if (err) return errorHelper(err, next);
}
}
前:
{ message: 'Validation failed',
name: 'ValidationError',
errors:
{ username:
{ message: 'Validator "required" failed for path username',
name: 'ValidatorError',
path: 'username',
type: 'required' },
state:
{ message: 'Validator "enum" failed for path state',
name: 'ValidatorError',
path: 'state',
type: 'enum' },
email:
{ message: 'Validator "custom validator here" failed for path email',
name: 'ValidatorError',
path: 'email',
type: 'custom validator here' },
age:
{ message: 'Validator "min" failed for path age',
name: 'ValidatorError',
path: 'age',
type: 'min' } } }
后:
[ 'username is required.',
'state not an allowed value.',
'custom validator here',
'age below minimum.' ]
编辑:快照,只是意识到这是一个CoffeeScript问题。不是CoffeeScript的人,我不想在CS中重写这个。您可以随时将它作为js
文件加入您的CS?
有也表示,验证效果很好。 – chovy