Fetch Foursquare categories from the Foursquare API and dump them to a JSON file

dump_foursquare_categories.rb

require 'foursquare2' # https://github.com/mattmueller/foursquare2

file = 'foursquare_categories.json'
client_id = 'client_id'
client_secret = 'client_secret'

client = Foursquare2::Client.new(:client_id => client_id, :client_secret => client_secret)

File.open(file, 'w') { |file| file.write(JSON.pretty_generate(client.venue_categories)) }