我正在做Rails 2.3到3.2升級。在此期間，我改變了很多東西。 現在我在打開網頁應用程序的主頁時看不到任何HTML。我已經使用after_filter驗證過我的控制器是否返回HTML，但Rails不會在響應代碼中返回該HTML。 我試着在調試日誌級別運行應用程序，但在日誌中沒有看到任何相關信息。Rails服務器不返回響應
有人可以幫我解決這個問題嗎？
編輯：我試着在ActionDispacther，ActiveSupport，Rack文件上記錄日誌，但沒有得到任何有關服務器錯誤的線索。
確保您的資產正在投放！有些東西會導致你的應用程序到302，所以也許路由或資產正在這樣做。
我知道你可能已經看到了這一點，但做了如下清單：
來源：http://www.rails-upgrade-checklist.com/#3.0
獲取到Rails 3.0
[ ] git checkout -b oh-noes-here-we-goes
[ ] Use the Rails 3.0 upgrade tool RailsCast to overwrite your current application
[ ] Get your Gemfile in order, attempting to load rails console as you go
[ ] Update your ActiveRecord queries to the new syntax
[ ] Loading rails console is a huge deal: Have a {chocolate,whiskey,beers}
[ ] Let's run that test suite. If you're test unit: yay! If you're rspec, upgrade! (probably best to delete spec/helper and rails g rspec:install
[ ] run your javascript tests (hahahahaha omg I know right?!?!!!)
[ ] If your pages load, that means you have a somewhat functioning rails 3.0 application. Commit your changes and get it on heroku for your staff/helpers/friends&family to go to
[ ] Let's talk about Authentication. Don't continue to run acts_as_authenticatable or auth_modules just because its there. My recommendation: replace with devise and send your users a link to reset their password. This is controversial, as your users will know something's up… but: something IS up, you're not as secure as you need to be
[ ] Update your mailers to the new syntax (and add tests to cover this case)
獲取到Rails 3.2
[ ] upgrade your gem file to 3.2.13
[ ] Add these gems to your Gemfile under a new "assets group"
[ ] Move your public/images to app/assets/images
[ ] Move your public/stylesheets to app/assets/stylesheets
[ ] Move your public/javascripts to app/assets/javascripts
[ ] Go through your stylesheets and look for urls(); if local, replace with image-url() (Sass)
[ ] Remove any layouts that individually call stylesheets and javascripts
[ ] See if your pages start to break open and swallow you whole
[ ] Remove jQuery
[ ] move your JavaScript libs (underscore, etc) to vendor/assets
[ ] build your application.scss and application.js --- don't put code in these files, just require other files (or load the entire tree)
[ ] find the problems when you're loading every CSS and JS on every page --- it's very common and you might need to change your application to be nicer
[ ] Use RailsDiff to identify additional required configuration changes
[ ] commit and push to heroku. do a little dance if it loads. ask for feedback
別人有另一個問題，並使用R苦惱的寶石升級：
How to upgrade Rails app from 2.3.5 to 3.2.x?
如果一切都失敗了，結賬rbates：
信息太少。 – 2014-09-06 14:06:06
@mohit請顯示您的查看文件嗎？ – uday 2014-09-06 15:00:22
'curl -v http：// localhost：3000'的結果是什麼？ – 2014-09-06 18:41:04