How do routes work in rails

We can't manually keep making an entry in the routes file for each book. Dynamic Segments are there to rescue us in such situations.

This is how we define routes using Dynamic segment approach. Also, Rails will make the request path segment corresponding to :id available in params method. The value of params behaves like a hash. We can access the value of :id from show action like this:.

Root URL determines what to respond when a user tries to load the home page of our application. You just need to take note of the convention used in naming root routes and you are good to go. There is a shorthand format for naming root routes and it looks like this:.

When you generate a new Rails application and point your browser to the root, you will be presented with a root page even though you have not defined a root route. How is that possible? If you have not seen this give it a shot before you continue reading.

Open up your terminal and generate a new Rails application. No, that was not magic : Let me explain what happens. When you have not defined a root for your application, Rails, by default, routes to an internal Rails::WelcomeController and renders a welcome page. Did that sink in? Rails automatically stops calling this controller Rails::WelcomeController the moment you define a root route in the routes file.

Rails allow you to name a route using the :as parameter. Here is one way of doing this:. For example in your views like this:. When the link gets clicked, the show action of the PagesController gets invoked.

The path shown in the hyperlink is:. Another example involves applications that needs authentication. You can have a SessionsController that handles authentication, with the new and destroy actions handling logging in and logging out, respectively. Named routes can come in handy in this scenario:. The hyperlinks show:. Rails provides you with the ability to group related routes and set default options for them.

This is the final part of the React workshops series created by our team. Let's learn how to This is the third part of the React workshop series created by our team. Let's learn about h Skip to Main Content. Ruby Rails Getting Started. What exactly is routing? How is routing done in Ruby on Rails?