joi4express 
Joiexpress validator
Usage
const express = require('express')
const app = express()
const joi4express = require('joi4express')
const helloWorld = {
handler: (req, res) => {
res.send('Hello-world !')
},
validate: {
query: Joi.object({
param1: Joi.string()
}),
params: Joi.object({
param1: Joi.string()
}),
body: {
param1: Joi.array().items({
param2: Joi.string()
})
},
headers: Joi.object({
param1: Joi.string()
}),
},
response: {
schema: Joi.object({
param1: Joi.string()
}),
status: {
204: Joi.object({
param2: Joi.string()
}),
404: Joi.object({
error: 'Failure'
})
}
}
}
app.get('/', joi4express(helloWorld))
app.listen(port, function () {
console.log(`Example app listening on port ${port} !`)
})The library also accepts a Joi Options object, and a Custom Joi Error Formatting function.
In the following example, double quotes will be removed due to the custom error formatting function.
const customJoiErrorFormatFcn = (e) => {
const message = e.message.replace(/"/g, '')
const details = e.details.map(detail => ({
...detail,
message: detail.message.replace(/"/g, '')
}))
return {
message,
details
}
}
const joiOptions = null // Or some desired options
app.get('/', joi4express(helloWorld, joiOptions, customJoiErrorFormatFcn))Any custom formatting function must return an object of the form:
{
message: 'a message string',
details: [
{
// Joi Error Details Object
}
]
}If the user-defined formatting function fails, then the original message/details will be returned (as if the function was never defined in the first place)
Installation
Installing joi4express
npm install joi4express --save
Run Tests
Tests are written with mocha/chai.
$ npm test