Request Response Cycle in Rails

 

Link :: 

https://www.nopio.com/blog/ruby-rails-popular-job-interview-questions/

7. Explain request/response cycle.

Here is the request/response cycle:

Let’s explain request/response flow in Rails:

1. The user opens their browser and enters a URL.
2. The browser sends a GET request to the URL. The request hits the Rails Router (config/routes.rb).
3. The router receives the request information from the web server and based on that, decides which controller action should be called. If a request matches to any path in the routes file, the corresponding controller and action will be called.
4. The controller receives the parameters from the router and passes them into appropriate model methods.
5. The model queries a database to fetch data.
6. The Database returns stored data to the model.
7. The model manages the data and returns it to the controller.
8. The controller feeds the received data to the view.
9. The view renders the page as HTML, prepares a response and forwards it to the controller.
10. The controller forwards the ready response to the browser.
11. The browser displays a response to the user