Lejr

Ledger
Request

Introduction
A web application that allows you to track how much money your friends owe you, and after your friend accepts your request of paying you back, the app will directly deposit the money into your bank account.

How we did it
We built the website using Interac's Public API and MongoDB hosted by MLab; the website is hosted on Heroku. Our Node.js/Express backend is also acting as a REST API for our Android application.

Inspiration
Our friends keep forgetting to pay us back, and we're uncomfortable with pestering them so we thought of the idea to make payment requests simple and quick by using the Interac API along with a Node.js backend.

Built With

Submitted to

UofTHacks V
- Winner Best REST API by RBC

Created by

- I created the REST API and the web backend using Node.js/Express.
- I used MongoDB, Mongoose, and MLab to store data for our application.
- I programmed the API calls that communicates with the Interac Public API from the web backend.

Charles Zhang
I worked on the Android client application that was supposed to pair with our back-end server. Unfortunately, due to difficulties with using the available RESTful API libraries, we were not able to complete the Android application in time. The Android client was originally supposed to have all the features our current web app has.
During the project, I learned a lot about Android development along with the UniRest library, Volley library, and No-SQL databases (which in this case is MongoDB).

Jason Chu
I originally developed the idea of Lejr after the Interac workshop which emphasized the Request call for their API and realized Lejr was an application that could solve a problem that many of us have: the inability to nag our friends for the money they owe us. Lejr bypasses the social awkwardness of being "that" friend.

During the project, I worked on developing a prior version of Lejr that was created on Android Studio using Java and XML. I pair programmed with my teammates to learn about RetroFit, UniRest and kther HTTP request libraries.
After transferring to a web application, I built the front-end design of Lejr, using HTML and CSS, which interacting with the Node.js backend, Interac request calls, and MongoDB entries.

Kallen Tu
Private user

Updates

Charles Zhang started this project — Jan 21, 2018 05:13 AM EST

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