https://github.com/dominhhai/koa-busboy

Upload files with Busboy
https://github.com/dominhhai/koa-busboy

busboy koa-busboy koa-middleware koa2 middleware multipart upload-file

Last synced: 2 months ago
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Upload files with Busboy

• Host: GitHub
• URL: https://github.com/dominhhai/koa-busboy
• Owner: dominhhai
• License: mit
• Created: 2017-04-23T10:43:46.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2023-06-10T05:40:44.000Z (about 1 year ago)
• Last Synced: 2024-04-01T22:03:31.860Z (3 months ago)
• Topics: busboy, koa-busboy, koa-middleware, koa2, middleware, multipart, upload-file
• Language: JavaScript
• Homepage: https://www.npmjs.com/package/koa-busboy
• Size: 11.7 KB
• Stars: 29
• Watchers: 2
• Forks: 6
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• awesome-koa - koa-busboy - 处理 koa v2 的 multipart/form-data 数据。   (仓库 / 中间件)

README

        
# koa-busboy

A koa's middleware for handling multipart form.

Note that, this middleware supports `Koa v2` only.

## Installation

```

$ npm i -S koa-busboy

```

## Usage

`koa-busboy` will adds all text `fields` to `ctx.request.body` object and uploaded `files` to `ctx.request.files` array.

To create middleware, simply call the module function with custom config options as following:

```javascript

const busboy = require('koa-busboy')

const uploader = busboy(options)

```

While, `options` is same as original [busboy](https://github.com/mscdex/busboy#api) module.

However, you can specify the following options also.

* **dest** - _string_ - The folder to save uploaded files (Default: system temp folder - `os.tmpdir()`).

* **fnDestFilename** - _function_ - The function that defines the final filename which saved on `dest` folder. The `fnDestFilename(fieldname, filename)` function will return the name of file which be saved on disk. While `fieldname` is your uploaded field's name and `filename` is your uploaded file's name. (Default: `(fieldname, filename) => Date.now() + fieldname + filename`)

* **acceptMimeTypes** - _Array_ - A list of [mimetypes](https://www.iana.org/assignments/media-types/media-types.xhtml) that are accepted, default is to accept all.

### Example

```javascript

const busboy = require('koa-busboy')

const koaRouter = require('koa-router')

const uploader = busboy({

  dest: './upload' // default is system temp folder (`os.tmpdir()`)

  fnDestFilename: (fieldname, filename) => uuid() + filename,

  acceptMimeTypes: ['image/gif', 'image/jpeg'] //only gif and jpeg files are uploded

})

const router = koaRouter()

router.post('/upload', uploader, async ctx => {

  // fields

  // text fields is add to ctx.request.body object

  let { name } = ctx.request.body

  // files

  // uploaded files is add to ctx.request.files array

  let fileReadStream = ctx.request.files[0]

})

```