oauth2.rb

require 'rubygems'
require 'sinatra'
require 'oauth2'
require 'json'

def client
  OAuth2::Client.new('app_id', 'app_secret', :site => 'https://api.geoloqi.com')
end

get '/auth/loqi' do
  redirect client.web_server.authorize_url(
	:redirect_uri => redirect_uri,
	:scope => 'last_locaton,location_history'
  )
end

get '/auth/loqi/callback' do
  access_token = client.web_server.get_access_token(params[:code], :redirect_uri => redirect_uri)
  user = JSON.parse(access_token.get('/account/profile'))

  user.inspect
end

def redirect_uri
  uri = URI.parse(request.url)
  uri.path = '/auth/loqi/callback'
  uri.query = nil
  uri.to_s
end

I get this when trying to run this file:

/usr/lib/ruby/gems/1.8/gems/rack-1.2.1/lib/rack/utils.rb:138:in union': can't convert Array into String (TypeError) from /usr/lib/ruby/gems/1.8/gems/rack-1.2.1/lib/rack/utils.rb:138 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:ingem_original_require'
from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require' from /usr/lib/ruby/gems/1.8/gems/rack-1.2.1/lib/rack/request.rb:1 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:ingem_original_require'
from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require' from /usr/lib/ruby/gems/1.8/gems/rack-1.2.1/lib/rack/showexceptions.rb:3 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:ingem_original_require'
... 7 levels...
from /usr/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra.rb:4
from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in gem_original_require' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:inrequire'
from geoloqi.rb:2