Ever wanted to get a penny but they're always out of stock? Fear no more! With Penny it's easy to build a bot that monitors the price and availability!
Add this line to your application's Gemfile:
gem 'penny'
And then execute:
$ bundle
require 'penny'
twenty_two_inches = "http://www.pennyskateboards.com/eu/shop/by-size/penny-original-22.html/"
boards = Penny::Boards.new(twenty_two_inches).all
boards.each do |board|
if board.available?
puts "yeay! the #{board.name} is available and it costs #{board.price}. Get it here: #{board.url}"
else
puts "nein! the #{board.name} is not available. that makes me a sad panda."
end
end
A Penny::Board responds to:
board.name # => Jojo penny board
board.url # => http://www.pennyskateboards.com/eu/penny-space-22-inch.html
board.price # => 49.99 (Float)
board.image # => http://media.pennyskateboards.com/something.jpg
board.available? # => true
After checking out the repo, run bin/setup
to install dependencies. Then, run rake rspec
to run the tests. You can also run bin/console
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/eljojo/penny. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The gem is available as open source under the terms of the MIT License.