koa validate middleware with joi.
npm install koa-celebratekoa-celebrate is an koa middleware function that wraps the joi validation library. This allows you to use this middleware in any single route, or globally, and ensure that all of your inputs are correct before any handler function. The middleware allows you to validate ctx.request.query, ctx.request.headers and ctx.request.params
The middleware can also validate:
- ctx.request.body: provided you are using body parser
- ctx.request.file: provided you are using form parser
By default, koa-celebrate will not verify other fields; however, you can extend the list of default verification fields through function extendKeys.
Example of using koa-celebrate on a single POST route to validate ctx.request.body.
``js
import Koa from 'koa'
import koaBody from 'koa-body'
import Router from '@koa/router'
import { celebrate, Joi } from 'koa-celebrate'
const app = new Koa()
const router = new Router()
router.post('test', celebrate({
body: Joi.object({
name: Joi.string().required()
})
}), (ctx, next) => {
// ...
})
app.use(router.routes())
`
Example of using koa-celebrate to validate all incoming requests to ensure the token header is present and matches the supplied regular expression.
`js
import Koa from 'koa'
import { celebrate, Joi } from 'koa-celebrate'
const app = new Koa()
app.use(celebrate({
headers: Joi.object({
authorization: Joi.string().regex(/^Bearer\s.+/).required()
})
}))
``