A Ruby wrapper for the World Bank Development Indicators API
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A wrapper for the World Bank's Development Indicators API sponsored by Code for America.

Please see the World Bank's data [developer's page] for more info on the data sources.

The World Bank gem should work with out problem on MRI 1.9.2, REE or JRuby. If it doesn't, it's a bug, and we'd appreciate it if you filed an issue!

Does your project or organization use this gem?

Add it to the apps wiki!

Continuous Integration

You can see the World Bank Gem's build status at http:ci.codeforamerica.org or on Travis:

Build Status


	require 'world_bank'

  WorldBank::Source.all.fetch       # =>  ['Doing Business', 'Something Else'...]
                                    #        array of 16 sources of information the bank used

  WorldBank::IncomeLevel..all.fetch # =>  { HIC: 'High Income', HPC: 'Heavily Indebted Poor Countries (HIPC)'...}
                                    #       hash of 9 income levels the bank assigns

  WorldBank::LendingType.all.fetch  # =>  [ { id: 'IBD', value: 'IBRD' }... ] an array of key: value pairs of
                                    #        the 4 lending types

  WorldBank::Topic.all.fetch        # =>  the 18 high level topics that indicators are grouped into

  WorldBank::Region.all.fetch       # =>  returns all the regions the World Bank can classify a country as

  WorldBank::Country.all.fetch      # =>  returns all countries the World Bank tracks

  WorldBank::Indicator.all.fetch    # =>  returns all the indicators the World Bank uses

  WorldBank::Indicator.featured     # =>  returns the featured indicators

  WorldBank::Topic.all.fetch        # =>  returns all the topics the World Bank catagorizes its indicators into

include WorldBank
  # Topics
  @environment = Topic.find(6).fetch
  @environment.id                 # =>  6
  @environment.name               # =>  'Environment'
  @environment.note               # =>  'Natural and man-made environmental resources – fresh...'

  # Countries
  @brazil = Country.find('br').fetch
  @brazil = Country.find('bra').fetch
  @brazil.name                    # =>  'Brazil'
  # note: only low and middle income countries are classified by region...
  @brazil.region                  # =>  <WorldBank::Region @name="Latin America & Caribbean (all income levels)" ....>
  @brazil.capital                 # =>  'Brasilia'
  @brazil.lending_type            # => <WorldBank::LendingType>

  # Indicators
  @tractors = Indicator.find('AG.AGR.TRAC.NO').fetch
  @tractors.id                    # =>  'AG.AGR.TRAC.NO'
  @tractors.name                  # =>  'Agricultural Machinery, tractors'
  @tractors.source                # =>  { id: 2, value: 'World Development Indicators' }

  # Data
  @results = WorldBank::Data.country('brazil').indicator('NY.GDP.MKTP.CD').dates('2000:2008').fetch
  # returns an array of WorldBank::Data objects that correspond to
  # Brazil's Yearly Gross Domestic Product as MarKeT Prices in Current U.S.
  # Dollars from 2000 to 2008

  puts @results.first.name
  @results.each {|d| puts d.date + ': $' + d.value }
  #    =>
  #  GDP (current US$)
  #  2008: $1652632229227.61
  #  2007: $1365982651542.37
  #  2006: $1088917279411.76
  #  2005: $882185291700.904
  #  2004: $663760000000
  #  2003: $552469288267.793
  #  2002: $504221228974.035
  #  2001: $553582178386.192
  #  2000: $644701831101.394
  #  The WorldBank::Data can have have methods matching any of the World Bank API's
  # modifiers (like #dates above) called as class methods or chained in a query.


In the spirit of free software, everyone is encouraged to help improve this project.

Here are some ways you can contribute:

  • by using alpha, beta, and prerelease versions
  • by reporting bugs
  • by suggesting new features
  • by writing or editing documentation
  • by writing specifications
  • by writing code (no patch is too small: fix typos, add comments, clean up inconsistent whitespace)
  • by refactoring code
  • by resolving issues
  • by reviewing patches

Submitting an Issue

We use the GitHub issue tracker to track bugs and features. Before submitting a bug report or feature request, check to make sure it hasn't already been submitted. You can indicate support for an existing issuse by voting it up. When submitting a bug report, please include a Gist that includes a stack trace and any details that may be necessary to reproduce the bug, including your gem version, Ruby version, and operating system. Ideally, a bug report should include a pull request with failing specs.

Submitting a Pull Request

  1. Fork the project.
  2. Create a topic branch.
  3. Implement your feature or bug fix.
  4. Add documentation for your feature or bug fix.
  5. Run bundle exec rake doc:yard. If your changes are not 100% documented, go back to step 4.
  6. Add specs for your feature or bug fix.
  7. Run bundle exec rake spec. If your changes are not 100% covered, go back to step 6.
  8. Commit and push your changes.
  9. Submit a pull request. Please do not include changes to the gemspec, version, or history file. (If you want to create your own version for some reason, please do so in a separate commit.)


Copyright (c) 2011 Code for America See LICENSE for details.

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