我正在嘗試根據某些條件生成錯誤陣列，我該如何實作，郵遞員提出：“無法讀取未定義的屬性（讀取'推送'）”
username: {
type: String,
required: [true, "username is required"],
// minlength: 6,
unique: true,
// match: [
// /^(?=.{3,20}$)(?![_.])(?!.*[_.]{2})[a-zA-Z0-9._] (?<![_.])$/,
// "username shouldn't include . or _ and at least 3 letters and at maximum 20 letters",
// ],
validate: {
errors: [],
validator: function (username) {
if (username.length < 10) {
this.errors.push("username cannot be less than 3 characters");
}
if (username.match(/(?![_.])(?!.*[_.]{2})[a-zA-Z0-9._] (?<![_.])$/)) {
this.errors.push(`username shouldn't begin or end with . or _ `);
}
},
message: this.errors,
},
},
uj5u.com熱心網友回復：
array在validator函式中創建一個，并將throw這個陣列作為new Error(). save()然后在函式的回呼中使用這個陣列。
validate
validate: {
validator: function (username) {
let errors = []
if (username.length < 3)
errors.push("username cannot be less than 3 characters")
if (username.match(/(?![_.])(?!.*[_.]{2})[a-zA-Z0-9._] (?<![_.])$/))
errors.push("username shouldn't begin or end with . or _ ")
if (errors.length > 0)
throw new Error(errors)
}
}
save
newUser.save((err, user) => {
if (err) {
let errors = Object.values(err.errors)[0].properties.message.split(',')
return res.status(400).json({
success: false,
err: errors.length > 1 ? errors : errors[0]
})
}
else ...
})
轉載請註明出處，本文鏈接：https://www.uj5u.com/net/481731.html