Colour Code Challenge
The aim of the colour challenge is to create a script to randomly generate an RGB colour every hour and programmatically name it with an adjective + noun.
The challenge was created as a way to compare the syntax between languages with a commonly themed application.
Node.js Colour Code Challenge
The application follows MVC principles:
- All data is read and written through functions within the util module
./lib/util.js. The data is stored within a JSON file.
- The view is located at
./views/log.mstwritten in HTML5 using mustache templating
- Three controllers provide the operations, these are
Each operation is accessed through
./lib/cli.js which acts as the command line interface. They can also be accessed through
./bin/cli which NPM adds to the users path as
colour-challenge when installed.
To log the data hourly
colour-challenge add should be defined as a cron job and the server can either be spun up when required or could be kept running constantly using a package such as forever.
There is an additional autocommit feature which will automatically commit
./data/log.json to the GitHub repository after a new colour is added. This is only triggered if the config variable
The application requires Node.js and npm to be installed, instructions can be found at nodejs.org.
With Node installed use the following to install the application globally.
npm install -g colour-challenge
Alternatively install direct from the repository.
npm install -g https://github.com/StudioLE/node-colour-challenge.git
The app uses node-config so it's highly configurable. I recommend copying the
./config/default.json file to
./config/local.json and editing that so that your changes are not overwritten by future updates.
cd /usr/lib/node_modules/colour-challenge cp config/default.json config/local.json nano config/local.json
Add a single colour to the log
Add multiple colours to the log
colour-challenge add 10
Clear all previous logs
Spin up a server to view the logs
Spin up a server forever to view the logs
Commit the log to GitHub
To run the script on the hour every hour you will want to configure a cron job similar to the following:
0 * * * * colour-challenge add
Now you've seen how it's done why don't you take a shot in the language of your own choice? Or perhaps there's a framework you've been dying to try out? Give it a go and send us a link to your repository. The challenge is great for participants of all levels of experience.