Add action ProfilesController#index

app/controllers/profiles_controller.rb

@@ -1,4 +1,8 @@
 class ProfilesController < ApplicationController
+  def index
+    @profiles = Profile.all
+  end
+
   def show
     @profile = Profile.find params[:id]
   end

app/views/profiles/index.html.erb

@@ -0,0 +1,9 @@
+<h1>Profiles</h1>
+
+<% if @profiles.present? %>
+  <ul>
+    <% @profiles.each do |profile| %>
+      <li><%= link_to profile.full_name, profile %></li>
+    <% end %>
+  </ul>
+<% end %>

config/routes.rb

@@ -1,5 +1,5 @@
 Rails.application.routes.draw do
   root to: 'home#show'
 
-  resources :profiles, only: :show
+  resources :profiles, only: %i[index show]
 end