node.js 如何使用 Joi 验证对象数组？
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How to validate array of objects using Joi?
提问by zakir
I am getting an array of objects to backend, where each object contains a service name. The structure looks like below
我正在向后端获取一组对象，其中每个对象都包含一个服务名称。结构如下
[{"serviceName":"service1"},
{"serviceName":"service2"},..]
when I get the array at backend, I want to validate that every object in the array has serviceName property.
当我在后端获取数组时，我想验证数组中的每个对象是否都具有 serviceName 属性。
I had written the following code, but even though I pass valid array, I am getting validation error.
我编写了以下代码，但即使我传递了有效数组，我也收到了验证错误。
var Joi = require('joi');
var service = Joi.object().keys({
serviceName: Joi.string().required()
});
var services = Joi.array().ordered(service);
var test = Joi.validate([{serviceName:'service1'},{serviceName:'service2'}],services)
For the above code, I am always getting the validation error with message
对于上面的代码，我总是收到带有消息的验证错误
"value" at position 1 fails because array must contain at most 1 items
回答by zakir
replacing orderedwith itemswill work.
用物品替换订购的物品将起作用。
let Joi = require('joi')
let service = Joi.object().keys({
serviceName: Joi.string().required(),
})
let services = Joi.array().items(service)
let test = Joi.validate(
[{ serviceName: 'service1' }, { serviceName: 'service2' }],
services,
)
For reference click here
参考点击这里
回答by sediq khan
A basic/ clearer example is as follows. To validate a JSON request like this:
一个基本/更清晰的例子如下。要验证这样的 JSON 请求：
{
"data": [
{
"keyword":"test",
"country_code":"de",
"language":"de",
"depth":1
}
]
}
Here is the Joi validation:
这是 Joi 验证：
seoPostBody: {
body: {
data: Joi.array()
.items({
keyword: Joi.string()
.required(),
country_code: Joi.string()
.required(),
language: Joi.string()
.required(),
depth: Joi.number()
.required(),
}),
},
};
This is what I am doing in NodeJs, might need some slight changes for other platforms
这是我在 NodeJs 中所做的，对于其他平台可能需要一些细微的更改
回答by Him Hah
Just want to make it more clear. I'm currently using "@hapi/joi:16.1.7".
只是想让它更清楚。我目前正在使用“@hapi/joi:16.1.7”。
Let's say you want your schema to validate this array of objects.
假设您希望架构验证这个对象数组。
const example = [
{
"foo": "bar",
"num": 1,
"is_active": true,
}
];
Then schema's rules should be:
那么架构的规则应该是：
var validator = require('@hapi/joi');
const rules = validator.array().items(
validator.object(
foo: validator.string().required(),
num: validator.number().required(),
is_active: validator.boolean().required(),
),
);
const { error } = rules.validate(example);
回答by PrashantAjani
For Joi you can use below which is working fine for me, this will validate that array must have at-least on object with key serviceName-
对于 Joi，您可以在下面使用它，这对我来说很好用，这将验证该数组必须至少具有关键 serviceName- 的对象
const Joi = require('joi');
const itemsArray = Joi.array().items(
Joi.object({
serviceName: Joi.string().required(),
})
).min(1).required();
const itemSchema = Joi.array().items(itemsArray).when('checkout_type', {
is: 'guest',
then: Joi.array().required(),
}).required();
let schema = Joi.object().keys({
items: Joi.alternatives().try(itemsArray, itemSchema).required(),
});
