无法将Rails应用程序部署到heroku

Question

我的Rails应用程序可以在Mac上的开发模式下工作。 我尝试将其编译为heroku时，在命令行中出现错误

    Cleaning up the bundler cache.
           Removing bundler (1.3.2)
    -----> Writing config/database.yml to read from DATABASE_URL
    -----> Preparing app for Rails asset pipeline
           Running: rake assets:precompile
           rake aborted!
           undefined method `[]' for nil:NilClass
           /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/config/initializers/devise.rb:234:in `block in <top (required)>'
           /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/vendor/bundle/ruby/2.0.0/gems/devise-3.1.2/lib/devise.rb:276:in `setup'
           /
           /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc1/lib/rails/engine.rb:609:in `bl
     /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc1/lib/rails/application.rb:214:in `initialize!'
       /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc1/lib/rails/railtie/configurable.rb:30:in `method_missing'
       /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/config/environment.rb:5:in `<top (required)>'
       /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc1/lib/active_support/dependencies.rb:228:in `require'
       /tmp/build_9afd2a8f-0be9-427c-82f9-5431cf3a30fc/vendor/bundle/ruby/2.0.0/gems/activesupport-
       Tasks: TOP => environment
       (See full trace by running task with --trace)
 !
 !     Precompiling assets failed.
 !

 !     Push rejected, failed to compile Ruby app

检查了我的devise.rb我唯一添加的行是

config.omniauth :facebook, FACEBOOK_CONFIG['facebook_api_key'], FACEBOOK_CONFIG['facebook_api_secret'], scope: "email, publish_actions"

and this is my gemfile - as you can see i have the production and development information included


group :development, :test do
     gem 'sqlite3'
end

group :production do
     gem 'pg'
     gem 'rails_12factor'
end

根据建议设计230-238

# ==> OmniAuth
  # Add a new OmniAuth provider. Check the wiki for more information on setting
  # up on your models and hooks.
   config.omniauth :facebook, FACEBOOK_CONFIG['facebook_api_key'], FACEBOOK_CONFIG['facebook_api_secret'], scope: "email, publish_actions"

  # ==> Warden configuration
  # If you want to use other strategies, that are not supported by Devise, or
  # change the failure app, you can configure them inside the config.warden block.

Answer 1

您可能想停止使用此magick FACEBOOK_CONFIG变量，并开始将环境变量用于heroku

config.omniauth :facebook, ENV['FACEBOOK_API_KEY'], ENV['FACEBOOK_API_SECRET'], scope: "email, publish_actions"

为了使该ENV可以更轻松地进行开发，请检查： https : //github.com/bkeepers/dotenv或https://github.com/laserlemon/figaro

Answer 2

显然，您要使用的FACEBOOK_CONFIG为nil 。

首先，您必须在Heroku帐户中设置两个环境变量 ：

$ heroku config:set FACEBOOK_API_KEY=your-key-here
$ heroku config:set FACEBOOK_API_SECRET=your-secret-here

然后验证这些设置是否正确：

$ heroku config:get FACEBOOK_API_KEY
$ heroku config:get FACEBOOK_API_SECRET

最后，如下更新device.rb文件：

config.omniauth :facebook, ENV['FACEBOOK_API_KEY'], ENV['FACEBOOK_API_SECRET'], scope: "email, publish_actions"

现在应该很好。

Answer 3

看来问题出在Devise。 错误说

undefined method `[]' for nil:NilClass 

如果您查看下一行，它来自哪里。

config/initializers/devise.rb:234

因此，错误位于config / initializers / devise.rb中的第234行。

在Mac上运行以下命令。

bundle exec rake assets:precompile

如果没有得到相同的错误，则说明您的生产环境存在问题。

您可以在config / initializers / devise.rb：234上添加您的内容吗

Answer 4

只需使用相同的信息更新您的facebook.yml文件即可进行生产。 我想你只有发展。

/config/facebook.yml

development:
  facebook_api_key: copy_from_here
  facebook_api_secret: copy_2_from_here

production:
  facebook_api_key: paste_to_here
  facebook_api_secret: paste_2_here