Use named route in `notes#index`

This commit refactors both our Request Routing and View layer’s code to share helper method.

The "/notes/new" String was duplicated in both the notes#index template and our application’s route declaration file.

A String value duplicated in this way across disparate files can be considered a “magic string”, since it’s equivalence in two seemingly unrelated areas of the codebase is both important and unclear.

By declaring the get "/notes/new" route declaration with the as: "new_notes" option, Rails will generate new_notes_path and new_notes_url routing helpers which are made available within the view layer.

Routing helpers are a discrete list of methods, so attempting to invoke a route helper that does not exist will raise a NoMethodError when invoked.

When we run the test suite, it passes.


      app/views/notes/index.html.erb

diff --git a/app/views/notes/index.html.erb b/app/views/notes/index.html.erb
index 69d5ed8..3be9028 100644
--- a/app/views/notes/index.html.erb
+++ b/app/views/notes/index.html.erb
@@ -1,3 +1,3 @@
-<a href="/notes/new">
+<a href="<%= new_note_path %>">
   Share a Note
 </a>


      config/routes.rb

diff --git a/config/routes.rb b/config/routes.rb
index 1d005be..0b48db8 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,6 @@
 Rails.application.routes.draw do
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
-  get "/notes/new", controller: "notes", action: "new"
+  get "/notes/new", controller: "notes", action: "new", as: "new_note"
   post "/notes", controller: "notes", action: "create"
 
   get "/", controller: "notes", action: "index"

Use named route in notes#index

Use named route in `notes#index`