[英]How to validate an array of objects in a request body using JOI
我正在尝试验证所下订单的请求正文。 我在尝试验证的请求正文上收到一组 json 对象。 每次我收到错误““productId”是必需的”
这是我的请求正文:
req.body={
"productId": [
{ "id": "5dd635c5618d29001747c01e", "quantity": 1 },
{ "id": "5dd63922618d29001747c028", "quantity": 2 },
{ "id": "5dd635c5618d29001747c01e", "quantity": 3 }
]
}
这是验证请求正文的 valdateOrder 函数:
function validateOrder(req.body) {
const schema = {
productId: joi.array().items(
joi.object().keys({
id: joi.string().required(),
quantity: joi.string().required()
})).required(),
}
return joi.validate(req.body, schema)
}
如果有人能指出我的 validateOrder 函数有什么问题,我将非常感激。
这似乎是一种奇怪的方法。 根据https://hapi.dev/module/joi/ ,将您的架构定义为自己的东西,然后使用该架构验证您的数据:
const Joi = require('@hapi/joi');
const schema = Joi.object({
productId: Joi.array().items(
Joi.object(
id: Joi.string().required(),
quantity: Joi.number().required()
)
)
};
module.exports = schema;
然后在路由中间件中使用它进行验证:
const Joi = require('@hapi/joi');
const schema = require(`./your/schema.js`);
function validateBody(req, res, next) {
// If validation passes, this is effectively `next()` and will call
// the next middleware function in your middleware chain.
// If it does not, this is efectively `next(some error object)`, and
// ends up calling your error handling middleware instead. If you have any.
next(schema.validate(req.body));
}
module.exports = validateBody;
你在 express 中像任何其他中间件一样使用它:
const validateBody = require(`./your/validate-body.js`);
// general error handler (typically in a different file)
function errorHandler(err, req, res, next) {
if (err === an error you know comes form Joi) {
// figure out what the best way to signal "your POST was bad"
// is for your users
res.status(400).send(...);
}
else if (...) {
// ...
}
else {
res.status(500).send(`error`);
}
});
// and then tell Express about that handler
app.use(errorHandler);
// post handler
app.post(`route`, ..., validateBody, ..., (req, res) => {
res.json(...)
});
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