如何将这个Ruby / Sinatra应用程序部署到Heroku？

Question

我正在尝试将我的第一次 Ruby / Sinatra部署（yay！），一个"to do list" app网站发送到Heroku。代码在Windows和Ubuntu环境中运行良好

但我实际上已经成功部署了。

我尝试使用自己的代码关注this tutorial。当我执行sudo git push heroku master时，我告诉应用程序已部署到Heroku，但当我转到它提供的URL时，它没有运行。我可能需要my (one-line) Procfile的帮助。另外，警告＆＃34; （这是否意味着部署没有发生？）说我没有声明我的Ruby版本。我尝试使用rvm 2.2.5并将gem 'ruby', '2.2.5'放入我的Gemfile，但如果我声明了Ruby版本，捆绑商将无法安装（它说我不具备该版本安装Ruby，我当然好像。）

sudo git push heroku master
Counting objects: 5, done.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (5/5), 419 bytes | 0 bytes/s, done.
Total 5 (delta 3), reused 1 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote: 
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rack
remote: -----> Using Ruby version: ruby-2.2.6
remote: -----> Installing dependencies using bundler 1.13.6
remote:        Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
remote:        Warning: the running version of Bundler (1.13.6) is older than the version that created the lockfile (1.13.7). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
remote:        Fetching gem metadata from https://rubygems.org/.........
remote:        Fetching version metadata from https://rubygems.org/.
remote:        Using diff-lcs 1.2.5
remote:        Using rack 1.6.5
remote:        Using rspec-support 3.5.0
remote:        Using ruby 0.1.0
remote:        Using tilt 2.0.5
remote:        Using bundler 1.13.6
remote:        Using rspec-core 3.5.4
remote:        Using rspec-expectations 3.5.0
remote:        Using rspec-mocks 3.5.0
remote:        Using rack-protection 1.5.3
remote:        Using sinatra 1.4.7
remote:        Bundle complete! 7 Gemfile dependencies, 11 gems now installed.
remote:        Gems in the groups development and test were not installed.
remote:        Bundled gems are installed into ./vendor/bundle.
remote:        Bundle completed (1.79s)
remote:        Cleaning up the bundler cache.
remote:        Warning: the running version of Bundler (1.13.6) is older than the version that created the lockfile (1.13.7). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
remote:        Removing dbm (0.5)
remote: -----> Detecting rake tasks
remote: 
remote: ###### WARNING:
remote:        You have not declared a Ruby version in your Gemfile.
remote:        To set your Ruby version add this line to your Gemfile:
remote:        ruby '2.2.6'
remote:        # See https://devcenter.heroku.com/articles/ruby-versions for more information.
remote: 
remote: -----> Discovering process types
remote:        Procfile declares types     -> web
remote:        Default types for buildpack -> console, rake
remote: 
remote: -----> Compressing...
remote:        Done: 17.3M
remote: -----> Launching...
remote:        Released v5
remote:        https://gentle-sea-73583.herokuapp.com/ deployed to Heroku
remote: 
remote: Verifying deploy... done.
To https://git.heroku.com/gentle-sea-73583.git
   995b763..014acd8  master -> master

我还尝试执行sudo heroku run ruby todo.rb（todo.rb是我的服务器应用），我明白了：

sudo heroku run ruby todo.rb
Running ruby todo.rb on ⬢ gentle-sea-73583... up, run.3103 (Free)
/app/vendor/ruby-2.2.6/lib/ruby/2.2.0/yaml/dbm.rb:2:in `require': cannot load such file -- dbm (LoadError)
    from /app/vendor/ruby-2.2.6/lib/ruby/2.2.0/yaml/dbm.rb:2:in `<top (required)>'
    from /app/lib/task_store.rb:2:in `require'
    from /app/lib/task_store.rb:2:in `<top (required)>'
    from todo.rb:7:in `require'
    from todo.rb:7:in `<main>'

也许我需要以某种方式在Heroku上设置YAML？我不知道怎么样......

Answer 1

从Gemfile中删除gem 'dbm'。

dbm gem只适用于jruby，因为你使用的是yaml / dbm，所以你不需要它。