Nest js upload is not saving file - nestjs

Question

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?

Answer 1

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);
}

Answer 2

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 {}
create upload directory and determine it's path in multer
registration

Answer 3

#Post('upload')
#UseInterceptors(FileInterceptor('file', {dest: 'uploads/'}))
uploadFile(#UploadedFile() file: Express.Multer.File) {
console.log(file);
}
You can use 'dest' keyword with decortor