JSONHasher
Create a stable SHA-2 hash from a JSON object.
JSON objects do not require the keys to be in any kind of order which can make creating a hash unstable. This gem solves that problem.
Installation
Add this line to your application's Gemfile:
gem 'json_hasher'
And then execute:
$ bundle
Or install it yourself as:
$ gem install json_hasher
Usage
test_json_one = '[{ "foo": "bar", "ping": "pong" }]'
test_json_two = '[{ "ping": "pong", "foo": "bar" }]'
hashed_one = JSONHasher::Parser.new(test_json_one).to_sha2
hashed_two = JSONHasher::Parser.new(test_json_two).to_sha2
# hashed_one: c15915ccb473c4cecca65f940f6a36091f70333b9e8226dfe51ca247c73e56f1
# hashed_two: c15915ccb473c4cecca65f940f6a36091f70333b9e8226dfe51ca247c73e56f1
assert_equal hashed_one, hashed_two
Development
After checking out the repo, run bin/setup
to install dependencies. Then, run rake test
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.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/nickpoorman/ruby_json_hasher.
License
The gem is available as open source under the terms of the MIT License.