Slowly getting the nested controllers working

More tests required

app/models/credential.rb

@@ -1,4 +1,5 @@
 class Credential < ApplicationRecord
+    belongs_to :domain
     validates :email, presence: true
     validates :email, uniqueness: true
     validates :email, format: { with: /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i , message: "email must be valid"}

app/models/domain.rb

@@ -1,4 +1,6 @@
 class Domain < ApplicationRecord
+    has_many :credentials, dependent: :destroy
+    has_many :virtuals, dependent: :destroy
     validates :domain, presence: true
     validates :domain, uniqueness: true
 end

app/models/virtual.rb

@@ -1,4 +1,5 @@
 class Virtual < ApplicationRecord
+    belongs_to :domain
     validate :domain_name_exists
     validates :email, presence: true
     validates :destination, presence: true

app/views/domains/index.html.erb

@@ -3,12 +3,11 @@
 <h1>Domains</h1>
 
 <div id="domains">
+  <ul>
   <% @domains.each do |domain| %>
-    <%= render domain %>
-    <p>
-      <%= link_to "Show this domain", domain %>
-    </p>
+    <li><%= link_to domain.domain, domain %></li>
   <% end %>
+  </ul>
 </div>
 
 <%= link_to "New domain", new_domain_path %>

app/views/domains/show.html.erb

@@ -1,6 +1,5 @@
 <p style="color: green"><%= notice %></p>
-
-<%= render @domain %>
+<h1><%= @domain.domain %></h1>
 
 <div>
   <%= link_to "Edit this domain", edit_domain_path(@domain) %> |
@@ -8,3 +7,19 @@
 
   <%= button_to "Destroy this domain", @domain, method: :delete %>
 </div>
+
+<h2>Credentials (<%= @domain.credentials.count %>)</h2>
+<ul>
+  <li><%= link_to "Add #{@domain.domain} email address", new_domain_credential_path(@domain) %>
+<% @domain.credentials.each do |credential| %>
+  <li><%= credential.email %></li>
+<% end %>
+</ul>
+
+<h2>Virtuals (<%= @domain.virtuals.count %>)</h2>
+<ul>
+  <li><%= link_to "Add #{@domain.domain} virtual email", new_domain_virtual_path(@domain) %></li>
+<% @domain.virtuals.each do |virtual| %>
+  <li><%= virtual.email%> >> <%= virtual.destination%></li>
+<% end %>
+</ul>

test/fixtures/virtuals.yml

@@ -1,9 +1,11 @@
 # Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
 
 one:
+  domain: one
   email: abuse@example.net
   destination: bob@example.net
 
 two:
+  domain: one
   email: postmaster@example.net
   destination: bob@example.net