分享一个基于 decorators 和 es6 类继承的 koa 路由 - CNode技术社区

decorators 和 ES6 class 的完美结合,支持class路径继承,class中间件继承,自动加载控制器,路由优先级,灵活的配置策略,满足各种复杂业务逻辑。

app.js

 
import Koa from 'koa'
import DecRouter from 'koa-dec-router'
const decRouter = DecRouter({
 controllersDir: `${__dirname}/controllers`,
 before: null, // global middleware
 after: null, // global middleware
})
const app = new Koa()
// decRouter.router: `koa-router` instance
app.use(decRouter.router.routes())
app.use(decRouter.router.allowedMethods())

controllers/api.js

import { controller, get, post } from 'koa-dec-router'
async function apiHandler(ctx, next) {
 console.log('handle all api and subclass\'s')
 await next()
}
@controller('/api', apiHandler)
export default class Api {
 async getApiCommon(ctx) {
 // ...
 return // some common data
 }
}

controllers/posts.js

import { controller, get, post } from 'koa-dec-router'
import Api from './api'
async function postHandler(ctx, next) {
 console.log('handle post')
 await next()
}
// define multi controller class in one file. You can passing {expose: false} to disable exposing this controller, which can still be inherit.
@controller('/subpost')
export class Subpost {
 @get('s')
 async list(ctx) {
 ctx.body = 'get subpost'
 }
}
@controller('/post')
export default class Post extends Api {
 @get('s') // final path = parent controller path + controller path + method path
 async list(ctx) {
 const commonData = await super.getApiCommon()
 ctx.body = 'get posts'
 }
 @get('/:id', {priority: -1}) // wildcard using low priority, let `special` method handle first
 async get(ctx) {
 ctx.body = 'get' + ctx.params.id
 }
 @get('/special')
 async special(ctx) {
 ctx.body = 'special post'
 }
}

欢迎 fork & star https://github.com/zaaack/koa-dec-router

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