ShareBill Project

Lukas Majercak Gun Pinyo Jan Tofel

Department of Computing

Imperial College London

June 19, 2014

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Overview

1 Introduction

2 Demonstration

3 Project Management

4 Choice of LanguageBack-endFront-end

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Introduction

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Money, Goods, and Flatmates

Nowadays, lots of students andemployees decide to live togetherin shared accommodation.

Most of the time they have tobuy something that they willshare together, but usually onlyone pays for it.

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Bills Clearing

Once they buy it, they may be too lazy to clear the debts immediately.

This is because the amount of money one owes has to be calculated.

Moreover, they might not have enough cash on them.

Thus, lots of groups of people agree to keep the receipts and clear thedebts periodically.

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Mystery Receipt ...

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or even MORE

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How to solve this problem ?

We need something that is

Able to remember details of payments

Able calculate total net instantly

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Solution - ShareBill Project

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Demonstration

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GO TO

http://sharebillproject.appspot.com/

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Project Management

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License

We decided to use BSD license for our project,

since we do not do this for commercial purpose.

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Use git as version control

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Use git hub as repository

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Delegation

Lukas Majercak and Jan Tofel

working on server side as paired programming

write all of back-end code (more detail on back-end slide)

provide a simple protocol for front-end

Gun Pinyo

working on client side

write most of front-end code (more detail on front-end slide)

improve web-interface to be user friendly

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Back End

Use Google AppEngine with Python as the main engine as Back-end

Use Webapp2 as framework

Use NDB non-relational database as database

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Choice of Language

PythonDeveloping in Python from scratch is very fast

Maturity of the language + Open Source

Comprehensiveness of standard libraries

Multiple frameworks available

Popular language - A lot of resources on the web

We did not care too much about the speed of our application

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Choice of Language

Google AppEngineMultiple front-ends with one back-end

Supports Python

NDB databaseStructured (Tree-like)

Easy and fast to get all from same parent

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Diagram

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Front End

Jinja2 templating language

HTML 5, CSS 3 and jQuery

Bootstrap 3

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jinja2Ability to use Python variables & functions in HTML

Templates to reduce redundancy in HTML

BootstrapVery powerful & customizable

Easily comprehensible

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Thank you for your attention!

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