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A ruby Parliamentary API wrapper that converts n-triple files into objects

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Parliament Data API Wrapper (Ruby)

parliament-ruby is a gem created by the Parliamentary Digital Service to allow easy communication with the internal parliament data API.

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NOTE: This gem is in active development and is likely to change at short notice. It is not recommended that you use this in any production environment.

Contents

Requirements

parliament-ruby requires the following:

Installation

gem 'parliament-ruby'

Usage

This gem's main function is fetching an n-triples from a remote server and converting it into linked ruby objects.

Note: Comprehensive class documentation can be found on rubydocs.

Setting up a connection

In order to connect to a remote server, we first need to set a base_url value, from which we will build an 'endpoint'. The base_url should be the beginning of a url without the trailing slash. For example http://example.com instead of http://example.com/.

parliament = Parliament::Request.new(base_url: 'http://test.com')

Setting a base URL 'globally'

Within code you can set a global base URL using the following snippet.

Parliament::Request.base_url = 'http://test.com'

# The base_url should be set for all new objects
Parliament::Request.new.base_url #=> 'http://test.com'

# You can still override the base_url on an instance by instance basis
Parliament::Request.new(base_url: 'http://example.com').base_url #=> 'http://example.com'

Alternatively, you can set the environment variable PARLIAMENT_BASE_URL on your machine and we will automatically use that.

ENV['PARLIAMENT_BASE_URL'] #=> 'http://example.com'

Parliament::Request.base_url #=> nil

Parliament::Request.new.base_url #=> 'http://example.com'

Building an 'endpoint'

Now that we have a base_url set, we will want to build an 'endpoint' such as: http://test.com/parties/current.

An endpoint is effectively just a full URL to an n-triple file on a remote server.

Building an endpoint is simple, once you have a Parliament::Request object, you do something like this:

parliament = Parliament::Request.new(base_url: 'http://test.com') #=>  #<Parliament::Request [...]>

# Target endpoint: 'http://test.com/parties/current'
parliament.parties.current

# Target endpoint: 'http://test.com/parties/123/people/current'
parliament.parties('123').people.current

# Target endpoint: 'http://test.com/people/123/letters/456'
parliament.people('123').letters('456')

Setting headers

Setting headers 'globally'

Within the code you can set global headers using the following snippet.

Parliament::Request.headers = { 'Accept' => 'Test' }

# The headers should be set for all new objects
Parliament::Request.new.headers #=> { 'Accept' => 'Test' }

# You can still override the headers on an instance by instance basis
Parliament::Request.new(headers: { 'Accept' => 'Test2' }).headers #=> { 'Accept' => 'Test2' }

Getting Started with Development

To clone the repository and set up the dependencies, run the following:

git clone https://github.com/ukparliament/parliament-ruby.git
cd parliament-ruby
bundle install

Running the tests

We use RSpec as our testing framework and tests can be run using:

bundle exec rake

Contributing

If you wish to submit a bug fix or feature, you can create a pull request and it will be merged pending a code review.

  1. Fork the repository
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Ensure your changes are tested using Rspec
  6. Create a new Pull Request

License

parliament-ruby is licensed under the Open Parliament Licence.

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