More Rails Routes

Let’s look at another example. Add this line after the previous route:

post "/products", to: "products#create"

Here, we’ve told Rails to take POST requests to “/products” and process them with the ProductsController using the create action.

Routes may also need to match URLs with certain patterns. So how does that work?

get "/products/:id", to: "products#show"

This route has :id in it. This is called a parameter and it captures a portion of the URL to be used later for processing the request.

If a user visits /products/1, the :id param is set to 1 and can be used in the controller action to look up and display the Product record with an ID of 1. /products/2 would display Product with an ID of 2 and so on.

Route parameters don’t have to be Integers, either.

For example, you could have a blog with articles and match /blog/hello-world with the following route:

get "/blog/:title", to: "blog#show"

Rails will capture hello-world out of /blog/hello-world and this can be used to look up the blog post with the matching title.