如何在自定义回送验证中提供动态消息?
问题描述:
User.validate('name', customValidator, {message: 'Bad name'});
function customValidator(err) {
if (this.name === 'bad') err();
});
var user = new User({name: 'Peter'});
user.isValid(); // true
user.name = 'bad';
user.isValid(); // false
有验证过程中修改message
变量的方法吗?例如,this.name === 'bad'
的消息是Bad name
,但是当this.name === 'very bad'
的消息应该是Very Bad name
。如何做到这一点?
答
突然有一个addError
方法与签名errors.add(attr, message, code)
,所以:
User.validate('name', customValidator);
function customValidator(err) {
if (this.name === 'bad') {
this.errors.add('name', `Name is bad`, 'name.bad')
err();
}
if (this.name === 'very bad') {
this.errors.add('name', `Name is very bad`, 'name.very.bad')
err();
}
});
这工作,但请记住,你将有+1custom
代码和信息,请参阅从粗糙error.details.codes.name
和error.details.messages.name
路径json下面:
{
"error": {
"statusCode": 422,
"name": "ValidationError",
"message": "The `Entity` instance is not valid. Details: `name` Name is very bad (value: very bad).",
"details": {
"context": "Entity",
"codes": {
"name": [
"name.very.bad",
"custom"
],
},
"messages": {
"name": [
"Name is very bad",
"is invalid"
]
}
},
"stack": "..."
}
}