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https://github.com/fyl080801/egg-decorator-router

a way, that create route、middleware and others use decorator mode
https://github.com/fyl080801/egg-decorator-router

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a way, that create route、middleware and others use decorator mode

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# egg-decorator-router

[![NPM version][npm-image]][npm-url]
[![build status][travis-image]][travis-url]
[![Test coverage][codecov-image]][codecov-url]
[![David deps][david-image]][david-url]
[![Known Vulnerabilities][snyk-image]][snyk-url]
[![npm download][download-image]][download-url]

[npm-image]: https://img.shields.io/npm/v/egg-decorator-router.svg?style=flat-square
[npm-url]: https://npmjs.org/package/egg-decorator-router
[travis-image]: https://img.shields.io/travis/fyl080801/egg-decorator-router.svg?style=flat-square
[travis-url]: https://travis-ci.org/fyl080801/egg-decorator-router.svg?branch=master
[codecov-image]: https://img.shields.io/codecov/c/github/fyl080801/egg-decorator-router.svg?style=flat-square
[codecov-url]: https://codecov.io/github/fyl080801/egg-decorator-router?branch=master
[david-image]: https://img.shields.io/david/fyl080801/egg-decorator-router.svg?style=flat-square
[david-url]: https://david-dm.org/fyl080801/egg-decorator-router
[snyk-image]: https://snyk.io/test/npm/egg-decorator-router/badge.svg?style=flat-square
[snyk-url]: https://snyk.io/test/npm/egg-decorator-router
[download-image]: https://img.shields.io/npm/dm/egg-decorator-router.svg?style=flat-square
[download-url]: https://npmjs.org/package/egg-decorator-router

Define egg.js router and middleware use decorator.

## Install

```bash
npm i egg-decorator-router --save
```

## Usage

```js
// {app_root}/config/plugin.js
exports.decoratorRouter = {
enable: true,
package: 'egg-decorator-router'
}
```

> 基于 typescript 的 eggjs 项目可直接使用装饰器
> 如果是 js 项目,则需要手动安装 `babel-plugin-transform-decorators-legacy` 和 `babel-plugin-transform-object-rest-spread`这两个包,并在项目里加入 `.babelrc` 文件

.babelrc 定义如下:

```json
{
"plugins": ["transform-decorators-legacy", "transform-object-rest-spread"]
}
```

## Specification

The full path is combin between root-path and sub-path.

在 controller 中先引入依赖

```javascript
const {
Route,
HttpAll,
HttpGet,
HttpPost,
HttpPut,
HttpPatch,
HttpDelete,
Middleware
} = require('egg-decorator-router')
```

如果使用 typescript

```typescript
import {
Route,
HttpAll,
HttpGet,
HttpPost,
HttpPut,
HttpPatch,
HttpDelete,
Middleware
} from 'egg-decorator-router'
```

### Use Route define a root-path on the controller

Define a root path on controller

```javascript
// root path is '/'
@Route()

// root path is '/'
@Route('/')

// root path is '/routename'
@Route('/routename')

// root path is '/routename/action'
@Route('/routename/action')
```

Parameter is available

```javascript
@Route('/routename/:name')
```

### Use HttpMethod define a sub-path

HttpMethod include `HttpGet` `HttpPost` `HttpPut` `HttpPatch` `HttpDelete` and `HttpAll`

Define a sub-path in controller's method

```javascript
// sub-path is '/'
@HttpGet()

// sub-path is '/'
@HttpGet('/')

// sub-path is '/action'
@HttpGet('/action')

// sub-path is '/action/:id'
@HttpGet('/action/:id')
```

### Define middleware

```javascript
@Middleware(routeM)
```

## Example

```javascript
'use strict'

const { Controller } = require('egg')
const { Route, HttpGet, Middleware, filters } = require('egg-decorator-router')
const { DefaultFilter } = filters

const routeM = (ctx, next) => {
console.log('passed route middleware')
next()
}

const actionM = i => {
return (ctx, next) => {
console.log('passed action middleware ' + i)
next()
}
}

@Route()
@Middleware(routeM)
class HomeController extends Controller {
@HttpGet('/') // path: /
async index() {
await new Promise(resolve => {
this.ctx.body = 'ssss'
resolve()
})
}

@HttpGet() // path: /func1
@Middleware(actionM(2), 2)
@Middleware(actionM(1), 1)
func1(ctx) {
ctx.body = 'hi, func1'
}

@HttpGet(':id') // path: /:id
@DefaultFilter('aaa')
func2(ctx) {
ctx.body = 'hi, func2' + ctx.params.id
}
}

module.exports = HomeController
```

## License

[MIT](LICENSE)