How can I convert the uploaded file to buffer?

Question

My code like this :


const axios = require('axios').default
import FormData from 'form-data'
import fs from 'fs'

export default class MyController {
  public async handleMultipleFile({ request }: HttpContextContract) {
    if(request.files('files').length > 0){
      const formData = new FormData()
      
      for( let i = 0; i < request.files('files').length; i++ ) {
        let file = request.files('files')[i]
        formData.append('files[' + i + ']', file)
      }

      axios.post(`https://example-api.com/assets/files`, formData, {
          headers: {
              'Content-Type': 'multipart/form-data'
          },
        }
      ).then(res => console.log(res.data))
      .catch(err => console.error(err))
    }
  }
}

The request.files('files') like this :

{
    "fieldName": "files[]",
    "clientName": "test.xlsx",
    "size": 8212,
    "type": "application",
    "extname": "xlsx",
    "subtype": "vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    "state": "consumed",
    "isValid": true,
    "validated": true,
    "errors": [],
    "meta": {}
}

I want to convert this file to buffer/blob/binary. So I can using formData to pass the file to a api. Because when using formData on the server side, the file must be in binary/blob

How can I solve this problem?

Note :

The file is not saved in path. So when the file is uploaded, the file is sent directly to the external api

My code is backend (node js)

What does your code, that handles the upload in the front, look like? — Geshode, Aug 05 '22 at 01:06
@Geshode This is a backend. So I make a api to receive uploading file. I try this using postman. The body in the postman use form-data — positive developer, Aug 05 '22 at 01:18
Why can you not just create a [new Blob()](https://developer.mozilla.org/en-US/docs/Web/API/Blob/Blob)? — Geshode, Aug 05 '22 at 01:25
@Geshode I'm still confused to implement it in node.js. Especially adonis — positive developer, Aug 05 '22 at 01:36

How can I convert the uploaded file to buffer?

0 Answers0