Install
js-template into your training directory. In step 2 rename js-template to
express-multer-client.
Install
express-template into your training directory. In step 2 rename
express-template to express-multer-api.
By the end of this lesson, students should be able to:
- Upload files to AWS S3 from a node application.
- Create path names with a low chance of duplication
- Store information about uploaded files in MongoDB via Mongoose
- Upload files from a browser to express and store them in AWS S3.
What are the parts of file upload? What are the issues to guard against?
We'll build a command line script in express-multer-api to upload a file to
AWS.
Why build a command line uploader?
We'll use AWS.S3, specifically the upload method, to send files to AWS S3.
We'll use the following node modules.
aws-sdkcryptodotenvfile-typefsmongoose
We'll run the script using npm run bin/upload-aws <file> [comment].
Refactoring is a skill to cultivate.
Let's separate out the parts that aren't about a command line script so we can reuse them.
We'll build a form in express-multer-client to handle file uploads.
We'll use the form attribute enctype="multipart/form-data" to allow uploading
of one or more files.
We'll use FormData and $.ajax to POST data to an echo server,
http://httpbin.org.
Later we'll use this client to POST data to express-multer-api.
We'll need to use the following express modules in addition to the modules from the command line code along:
expressbody-parsermulter
Can we improve our solution by refactoring?
Source code distributed under the MIT license. Text and other assets copyright General Assembly, Inc., all rights reserved.