将错误消息从猫鼬验证转换为用户友好的消息
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【中文标题】将错误消息从猫鼬验证转换为用户友好的消息【英文标题】:converting error messages from mongoose validation to user friendly messages 【发布时间】:2020-11-25 09:41:58 【问题描述】:您好,我是一个尝试学习节点的初学者 我正在尝试验证用户在注册页面中输入的数据 这是我的猫鼬模式
const schema = mongoose.Schema(
fname:type:String,
required:[true,"enter a first name"],
lname:type:String,
required:[true,"enter a last name "],
email:type:String,
required:[true,"email is required"],
unique:true,
trim:true,
lowercase:true,
validate(value)
if(!validator.isEmail(value))
throw new Error("Email is invalid");
,
pass:type:String,required:[true,"please enter a passkey"],minlength:[8,"enter atleast 8 characters"]
);
如您所见,我正在尝试验证某些字段并检查错误
usersave.save((err,doc)=>
if(err)
console.log(err);
res.render("register",err:err
elseconsole.log(doc);res.send("success")
);
如果用户在注册表单中输入错误数据,我会在控制台中收到以下错误消息:-
Error: users validation failed: fname: enter a first name, lname: enter a last name , pass: please enter a passkey, email: Error, expected `email` to be unique. Value: `ar@gmail.com`
at ValidationError.inspect (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\error\validation.js:47:26)
at formatValue (internal/util/inspect.js:718:31)
at inspect (internal/util/inspect.js:287:10)
at formatWithOptions (internal/util/inspect.js:1910:40)
at Object.Console.<computed> (internal/console/constructor.js:299:10)
at Object.log (internal/console/constructor.js:309:61)
at D:\.UC\eb Development\react-practice\authentication\index.js:75:21
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\model.js:4824:16
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\helpers\promiseOrCallback.js:16:11
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\model.js:4847:21
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\model.js:494:16
at D:\.UC\eb Development\react-practice\authentication\node_modules\kareem\index.js:246:48
at next (D:\.UC\eb Development\react-practice\authentication\node_modules\kareem\index.js:167:27)
at next (D:\.UC\eb Development\react-practice\authentication\node_modules\kareem\index.js:169:9)
at Kareem.execPost (D:\.UC\eb Development\react-practice\authentication\node_modules\kareem\index.js:217:3)
at _handleWrapError (D:\.UC\eb Development\react-practice\authentication\node_modules\kareem\index.js:245:21)
errors:
fname: ValidatorError: enter a first name
at validate (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1217:13)
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1200:7
at Array.forEach (<anonymous>)
at SchemaString.SchemaType.doValidate (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1145:14)
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\document.js:2392:18
at processTicksAndRejections (internal/process/task_queues.js:79:11)
properties: [Object],
kind: 'required',
path: 'fname',
value: '',
reason: undefined,
[Symbol(mongoose:validatorError)]: true
,
lname: ValidatorError: enter a last name
at validate (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1217:13)
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1200:7
at Array.forEach (<anonymous>)
at SchemaString.SchemaType.doValidate (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1145:14)
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\document.js:2392:18
at processTicksAndRejections (internal/process/task_queues.js:79:11)
properties: [Object],
kind: 'required',
path: 'lname',
value: '',
reason: undefined,
[Symbol(mongoose:validatorError)]: true
,
pass: ValidatorError: please enter a passkey
at validate (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1217:13)
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1200:7
at Array.forEach (<anonymous>)
at SchemaString.SchemaType.doValidate (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1145:14)
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\document.js:2392:18
at processTicksAndRejections (internal/process/task_queues.js:79:11)
properties: [Object],
kind: 'required',
path: 'pass',
value: '',
reason: undefined,
[Symbol(mongoose:validatorError)]: true
,
email: ValidatorError: Error, expected `email` to be unique. Value: `ar@gmail.com`
at validate (D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1217:13)
at D:\.UC\eb Development\react-practice\authentication\node_modules\mongoose\lib\schematype.js:1192:24
at processTicksAndRejections (internal/process/task_queues.js:97:5)
properties: [Object],
kind: 'unique',
path: 'email',
value: 'ar@gmail.com',
reason: undefined,
[Symbol(mongoose:validatorError)]: true
,
_message: 'users validation failed'
我希望能够在注册页面中通知用户他们做错了什么 我收到错误消息并将错误对象传递到注册页面以重新渲染 这次显示错误
当我将错误对象传递给 register.ejs 时,它包含以下信息
ValidationError: fname: enter a first name, lname: enter a last name , pass: please enter a passkey, email: Error, expected `email` to be unique. Value: `ar@gmail.com`
我想在注册页面中只显示错误消息,我该如何从上述信息中做到这一点? 或者有没有其他方法可以在前端显示错误?
【问题讨论】:
最好在模型模式中设置“required: true”,然后在路由器中管理验证和消息传递。请参阅下面的答案。 【参考方案1】:一种方法是通过npm express-validator
你可以阅读它here
然后将其包含在您的路由器文件中,然后通过路由器中间件进行验证 像这样:
const check, validationResult = require('express-validator');
router.post(
'/',
[
//account details validation
check('fname', 'Enter a First Name')
.not()
.isEmpty(),
check('lname', 'Enter a Last name')
.not()
.isEmpty()
check('email', 'type is required')
.not()
.isEmpty(),
],
async (req, res) =>
try
const errors = validationResult(req);
//Check if there are errors
if (!errors.isEmpty())
//If so Send response status with the error message
return res
.status(500)
.json( status: false, data: errors.array()[0].msg );
//... Rest of code is here ...
catch (error)
res.status(500).json( status: false, error: error.message );
);
我建议您阅读有关快速路由和将响应状态传递到前端的信息
必须说响应取决于您的实施,您也可以使用
res.send(errors.array()[0].msg)
只发送消息本身。 在上面的代码中,我使用 json obj 和响应状态来区分错误类型。 这完全取决于您的决定,希望这是有道理的。 祝你好运
【讨论】:
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