Heroku的Facebook的帆布應用程序教程：宣誓錯誤

我複製並粘貼Heroku的教程中關於建立一個畫布應用程序的代碼，以在這裏看到的Heroku託管的代碼。 https://devcenter.heroku.com/articles/facebook-ruby但是，我收到這個回溯（見下面）與omniauth有關的錯誤。Heroku的Facebook的帆布應用程序教程：宣誓錯誤

任何人都可以解釋

NoMethodError at/
undefined method `include?' for nil:NilClass 
file: builder.rb location: call line: 29

這些都是寶石，它使用

gem 'sinatra', '1.0' 
gem 'oa-oauth', '0.1.6' 



BACKTRACE 
(condense) 
JUMP TO: GET POST COOKIES ENV 
/Users/michael/.rvm/gems/[email protected]/gems/oa-core-0.1.6/lib/omniauth/builder.rb in call 
     @ins << @app unless @ins.include?(@app) 
/Users/michael/.rvm/gems/[email protected]/gems/rack-protection-1.2.0/lib/rack/protection/xss_header.rb in call 
     status, headers, body = @app.call(env) 
/Users/michael/.rvm/gems/[email protected]/gems/rack-protection-1.2.0/lib/rack/protection/base.rb in call 
     result or app.call(env) 
/Users/michael/.rvm/gems/[email protected]/gems/rack-protection-1.2.0/lib/rack/protection/base.rb in call 
     result or app.call(env) 
/Users/michael/.rvm/gems/[email protected]/gems/rack-protection-1.2.0/lib/rack/protection/path_traversal.rb in call

主代碼

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]%>&amp;layout=button_count&amp;show_faces=true&amp;width=450&amp;action=like&amp;colorscheme=light&amp;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&amp;layout=standard&amp;show_faces=true&amp;width=450&amp;action=like&amp;colorscheme=light&amp;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

來源

2012-09-13 Leahcim

2nding這個答案，我在下面的教程以及並不能獲得它工作。它似乎是捆綁器無法找到omniauth寶石。 –

它似乎是Omniauth的構建器類在可能依賴於環境的@ins變量上窒息。 –

嘿，夥計們，我寫了那個教程，我沒有時間去查看它並更新它，但我很快就會做，請耐心等待。當它更新時，我會通過這個帖子告訴你們。謝謝！ – raf

複製從意見的答案，以從「未答覆」過濾器中刪除了這個問題：

嘿，夥計們，我寫的教程......我更新了tuto和代碼，現在一切都好了，請告訴我，如果沒有。它不顯示一些圖片，因爲我需要等待Heroku的批准，但它的工作原理反正：https://devcenter.heroku.com/articles/facebook-ruby

〜每raf

來源

2013-10-09 06:08:10 DreadPirateShawn

Heroku的Facebook的帆布應用程序教程：宣誓錯誤

回答

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