So we will install it one by one via npm(Node Package Manager). Here, the only two dependencies are express and multer. To create one, navigate to the MulterApp directory in terminal, and write the following command: // In command prompt or terminalĪnswer a few questions (app name, git repo, etc…) and you’ll be ready to roll. Now, let’s start by first defining the package.json file to store our app’s configuration. Project SetupĬreate a directory for the project and give it any name. Multer will not process any form which is not multipart ( multipart/form-data). The body object contains the values of the text fields of the form, the file or files object contains the files uploaded via the form. Multer adds a body object and a file or files object to the request object. This way using multipart/form-data you can upload files. A multipart message will consist of text input and file input. In general, when a “form” is submitted, browsers use “ application-xx-Whereas, when you configure your form to use “ multipart/form-data” content-type, browsers will create a “multipart” message where each part will contain a field of the form. By this, you can understand that multer is used to handle multipart/form-data. It is written on top of the busyboy, for maximum efficiency.
Multer is a node.js middleware for handling multipart/form-data, which is primarily used for uploading files. We will be covering the following topics: At the end of this blog, you will be able to integrate the file uploads in your own apps. The goal is to make you comfortable in building apps that can easily handle any file uploads.
MULTER FILE UPLOAD EXAMPLE HOW TO
In this tutorial, we are going to learn how to upload files on the server with the help of Multer and Express in Node.js. In Node.js, with the Express web framework and the Multer library, adding file upload feature to your app is very easy. File upload is a common operation for any applications.