- run
rails s
command and start server - In your browser, request http://localhost:3000/ You'll probably see dogs and cats list.
- In DogsController, comment this out and save
'Do some work and change files'
- In CatsController, comment this out and save
'Do some work and change files'
- Reload the page, and you will sometimes see either dogs/cats is not listed, when the error is occurred.
- If you don't see the bug, comment those lines in and reload. And retry these process.
Below two bugs occur.