OmniAuth VKontakte

This is the unofficial OmniAuth strategy for authenticating to VKontakte via OAuth. To use it, you'll need to sign up for an OAuth2 Application ID and Secret on the Vkontakte Developers Page.

Basic Usage

use OmniAuth::Builder do
  provider :vkontakte, ENV['API_KEY'], ENV['API_SECRET']
end

Configuring

You can configure several options, which you pass in to the provider method via a Hash:

scope: a comma-separated list of access permissions you want to request from the user. Read the Vkontakte docs for more details
display: the display context to show the authentication page. Valid options include page, popup and mobile.
lang: specifies the language. Optional options include ru, ua, be, en, es, fi, de, it.
image_size: defines the size of the user's image. Valid options include mini(50x50), bigger(100x100), bigger_x2(200x200), original(200x*) and original_x2(400x*). Default is mini.
info_fields: specify which fields should be added to AuthHash when getting the user's info. Value should be a comma-separated string as per http://vk.com/dev/fields.
redirect_url: URL where code will be passed. This URL shall be a part of the domain specified in application settings http://vk.com/dev/auth_sites.

Here's an example of a possible configuration:

use OmniAuth::Builder do
  provider :vkontakte, ENV['API_KEY'], ENV['API_SECRET'],
    {
      :scope => 'friends,audio,photos',
      :display => 'popup',
      :lang => 'en',
      :image_size => 'original'
    }
end

Authentication Hash

Here's an example Auth Hash available in request.env['omniauth.auth']:

{"provider"=>"vkontakte",
 "uid"=>"1",
 "info"=>
  {"name"=>"Павел Дуров",
   "nickname"=>"",
   "first_name"=>"Павел",
   "last_name"=>"Дуров",
   "image"=>"http://cs7001.vk.me/c7003/v7003079/374b/53lwetwOxD8.jpg",
   "location"=>"Росiя, Санкт-Петербург",
   "urls"=>{"Vkontakte"=>"http://vk.com/durov"}},
 "credentials"=>
  {"token"=>
    "187041a618229fdaf16613e96e1caabc1e86e46bbfad228de41520e63fe45873684c365a14417289599f3",
   "expires_at"=>1381826003,
   "expires"=>true},
 "extra"=>
  {"raw_info"=>
    {"id"=>1,
     "first_name"=>"Павел",
     "last_name"=>"Дуров",
     "sex"=>2,
     "nickname"=>"",
     "screen_name"=>"durov",
     "bdate"=>"10.10.1984",
     "city"=>{"id"=>2, "title"=>"Санкт-Петербург"},
     "country"=>{"id"=>1, "title"=>"Росiя"},
     "photo"=>"http://cs7001.vk.me/c7003/v7003079/374b/53lwetwOxD8.jpg",
     "photo_big"=>"http://cs7001.vk.me/c7003/v7003736/3a08/mEqSflTauxA.jpg",
     "online"=>1,
     "online_app"=>"3140623",
     "online_mobile"=>1}}}

The precise information available may depend on the permissions which you request.

Supported Rubies

Tested with the following Ruby versions:

MRI 2.3
MRI 2.2
MRI 2.1
MRI 2.0
MRI 1.9.3
JRUBY 1.x

Contributing to omniauth-vkontakte

Fork, fix, then send me a pull request.

License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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