Adding Support for File Uploads

This tutorial covers adding file upload support to an Express application using the Multer library. It begins with an introduction to file uploads and the need for Multer, followed by installation and configuration steps. The tutorial then demonstrates creating a basic upload endpoint and testing it using Postman. Finally, a challenge is presented to create an endpoint for uploading user profile pictures, reinforcing the concepts learned.

What is the primary purpose of the Multer library in an Express application?

• To handle multipart/form-data for file uploads

• To manage user authentication

• To serve static files

• To handle JSON data

Which command is used to install the Multer library in a Node.js project?

• npm install multer@beta

• npm install multer --save-dev

• npm install express

• npm install multer

What is the purpose of the 'dest' property in Multer's configuration?

• To define the file type

• To specify the destination folder for uploads

• To set the upload speed

• To set the maximum file size

What HTTP method is typically used for file uploads in Express?

• DELETE

• PUT

• POST

• GET

What is the purpose of the 'single' method in Multer?

• To upload multiple files

• To specify the file size limit

• To handle a single file upload

• To set the file type

In Postman, what type of data should be selected to upload a file?

• Text

• Raw

• Binary

• Form-data

What should you do if a file uploaded with Multer does not have the correct extension?

• Re-upload the file

• Manually rename the file to add the correct extension

• Convert the file to a different format

• Delete the file

What is the endpoint URL for uploading a user's profile picture in the challenge?

• /avatar/upload

• /users/me/avatar

• /upload/avatar

• /profile/upload

Which directory should be used to store user avatars according to the challenge?

• profile_pics

• avatars

• images

• uploads

What is the first step in setting up a new route for file uploads in Express?

• Create a new directory for uploads

• Install the necessary middleware

• Set up the HTTP method and URL

• Configure the database