How does a rails server know which route.rb to use?

Question

I'm currently learning rails following this tutorial: https://www.railstutorial.org/book/beginning#sec-the_hello_application

Here's what I've done.

1. Create a new workspace in Cloud9.
2. Use the rails new hello_world to create a new rails application.
3. From there configure routes.rb, application_controller.rb etc.
4. Create a new application in the same work space using rails new sample_app
5. Muck around changing stuff here as well.
6. Change to the hello_world directory, our directory is /workspace/hello_world.
7. Open new terminal, run rails server -b $IP -p $PORT
8. This successfully deploys a webapp, but when I access it shows the application from my sample_app application.

How do I specify which application I want to deploy?

Answer 1

Make sure you are in the right directory. You have created two applications in the same directory, so make sure you are starting the server from /workspace/hello_world

Answer 2

You need to navigate to Cloud9/hello_world to run the server on it.

Or Cloud9/sample_app to run the server on it.

You might have created sample_app inside hello_world in which case to run it you will need to navigate to Cloud9/hello_world/sample_app to run it on the server.