Nest js upload is not saving file

user_3294396 0
Viewed 3563

I'm following the nestjs documentation for File upload, my endpoint is getting the file, but the file is not stored.

I'm using the same configuration than NesJS

@Post('upload')
@UseInterceptors(FileInterceptor('file'))
uploadFile(@UploadedFile() file) {
  console.log(file);
}

My app.module file, I added the import for:

MulterModule.register({
      dest: './uploads'
    })

But the file is not stored in the directory uploads. The complete log is:

undefined
{
  fieldname: 'file',
  originalname: 'nopornimage.png',
  encoding: '7bit',
  mimetype: 'image/png',
  buffer: <Buffer 89 50 4e 47 0d 0a 1a 04 d00 01 73 52 47 42 00 ae ce 04 ... 20087 more bytes>,
  size: 20137
}

(Yes, including the undefined)

What am I doing wrong?

multer nestjs
3 Answers

you should specify the destination. multer options

@Post('upload')
@UseInterceptors(FileInterceptor('file', {
  dest: 'uploads/'
}))
uploadFile(@UploadedFile() file) {
  console.log(file);
}

or you can use createWriteStream in fs module to save file by yourself.

import {createWriteStream} from 'fs'

@Post('upload')
@UseInterceptors(FileInterceptor('file'))
uploadFile(@UploadedFile() file) {
  const ws = createWriteStream('custom_filename')
  ws.write(file.buffer)
  console.log(file);
}
user_102888790
  1. you should register multer module in your domain module not in app module(unless app module is the only module in your project ) for example if your controller belongs to task domain you should register multer in task module not in app module
   imports: [
     TypeOrmModule.forFeature([TaskRepository]),
     MulterModule.register({ dest: './upload' }),
   ],
   controllers: [TaskController],
   providers: [TaskService],
 })
 export class TaskModule {}
  1. create upload directory and determine it's path in multer registration
user_93192310 
@Post('upload')
@UseInterceptors(FileInterceptor('file', {dest: 'uploads/'}))
uploadFile(@UploadedFile() file: Express.Multer.File) {
    console.log(file);
}

You can use 'dest' keyword with decortor

user_107673270
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