Heroku でホストするキャンバス アプリの作成に関する Heroku のチュートリアルのコードをコピーして貼り付けています。 https://devcenter.heroku.com/articles/facebook-ruby ただし、バックトレース (以下を参照) が示すこのエラーは omniauth に関連しています。
誰でも説明できますか
NoMethodError at /
undefined method `include?' for nil:NilClass
file: builder.rb location: call line: 29
これらはそれが使用する宝石です
gem 'sinatra', '1.0'
gem 'oa-oauth', '0.1.6'
BACKTRACE
(condense)
JUMP TO: GET POST COOKIES ENV
/Users/michael/.rvm/gems/ruby-1.9.3-rc1@ruby193/gems/oa-core-0.1.6/lib/omniauth/builder.rb in call
@ins << @app unless @ins.include?(@app)
/Users/michael/.rvm/gems/ruby-1.9.3-rc1@ruby193/gems/rack-protection-1.2.0/lib/rack/protection/xss_header.rb in call
status, headers, body = @app.call(env)
/Users/michael/.rvm/gems/ruby-1.9.3-rc1@ruby193/gems/rack-protection-1.2.0/lib/rack/protection/base.rb in call
result or app.call(env)
/Users/michael/.rvm/gems/ruby-1.9.3-rc1@ruby193/gems/rack-protection-1.2.0/lib/rack/protection/base.rb in call
result or app.call(env)
/Users/michael/.rvm/gems/ruby-1.9.3-rc1@ruby193/gems/rack-protection-1.2.0/lib/rack/protection/path_traversal.rb in call
メインコード
index.erb
<%=session['fb_error']%>
<% if session['fb_auth'] %>
<a href='logout'><img src='images/fb_logout_button.png'></a>
<% else %>
<a href='auth/facebook'><img src='images/fb_login_button.png'></a>
<% end %>
<h3><%= 'Hello, ' + session['fb_auth']['user_info']['first_name'] + ', ' if session['fb_token'] %>Welcome to my list of interesting articles.</h3>
<table>
<% @articles.each do |article| %>
<tr>
<td class='article'>- <a href='<%=article[:url]%>' target='_blank'><%=article[:title]%></a></td>
<td>
<% if session['fb_auth'] %>
<iframe src="http://www.facebook.com/plugins/like.php?href=<%=article[:url]%>&layout=button_count&show_faces=true&width=450&action=like&colorscheme=light&height=21" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:450px; height:21px;" allowTransparency="true"></iframe>
<% end %>
</td>
</tr>
<% end %>
</table>
<% if session['fb_auth'] %>
<hr />
<p><span class='like_site'>Do you like this site?</span></p>
<p><iframe src="http://www.facebook.com/plugins/like.php?href=http%3A%2F%2Ffaceboku.heroku.com%2F&layout=standard&show_faces=true&width=450&action=like&colorscheme=light&height=80" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:450px; height:80px;" allowTransparency="true"></iframe></p>
<% end %>
Faceboku.rb
equire 'sinatra'
require 'omniauth/oauth'
enable :sessions
#Here you have to put your own Application ID and Secret
APP_ID = "495940167082961"
APP_SECRET = "686da25c0fdd04a6f61b287bb0d5c9aa"
use OmniAuth::Builder do
provider :facebook, APP_ID, APP_SECRET, { :scope => 'email, status_update, publish_stream' }
end
get '/' do
@articles = []
@articles << {:title => 'Deploying Rack-based apps in Heroku', :url => 'http://docs.heroku.com/rack'}
@articles << {:title => 'Learn Ruby in twenty minutes', :url => 'http://www.ruby-lang.org/en/documentation/quickstart/'}
erb :index
end
get '/auth/facebook/callback' do
session['fb_auth'] = request.env['omniauth.auth']
session['fb_token'] = session['fb_auth']['credentials']['token']
session['fb_error'] = nil
redirect '/'
end
get '/auth/failure' do
clear_session
session['fb_error'] = 'In order to use this site you must allow us access to your Facebook data<br />'
redirect '/'
end
get '/logout' do
clear_session
redirect '/'
end
def clear_session
session['fb_auth'] = nil
session['fb_token'] = nil
session['fb_error'] = nil
end