koa-body-validator

#### A simple koa-router body validator middleware based on Joi.

##### Usage
> This package requires koa-body or an alternative body-parser that saves the parsed body in koas context object (ctx.request.body).
``javascript
const Koa = require('koa')
const koaBody = require('koa-body')
const router = require('koa-router')()

const {Joi, bodySchema} = require('koa-body-validator')

const app = new Koa()

app.use(koaBody())


router.post('/', bodySchema({
name: Joi.string().min(5).max(128).required(),
email: Joi.string().email().required(),
password: Joi.string().regex(/^[a-zA-Z0-9]{3,30}$/).required(),
birthyear: Joi.number().integer().min(1900).max(2007),
}), async ctx => {
try {
ctx.validate()

ctx.body = {
name: ctx.request.body.name,
email: ctx.request.body.email,
password: ctx.request.body.password
}
} catch(err) {
ctx.body = err.message
}
})


app.use(router.routes())
app.use(router.alloweMethods())

app.listen(8080)
``

For more instructions on how to define the schema, see the detailed Joi API Reference.