multiple site -> supporters

app.rb

@@ -119,6 +119,12 @@ end
 
 post '/settings/create_child' do
   require_login
+
+  if !current_site.plan_feature(:unlimited_site_creation)
+    flash[:error] = 'Cannot create a new site with your current plan, please become a supporter.'
+    redirect '/settings#sites'
+  end
+
   site = Site.new
 
   site.parent_site_id = parent_site.id

models/site.rb

@@ -920,9 +920,9 @@ class Site < Sequel::Model
   end
 
   def plan_type
-    return 'free' if values[:plan_type].nil?
-    return 'supporter' if values[:plan_type].match /^plan_/
-    values[:plan_type]
+    return 'free' if owner.values[:plan_type].nil?
+    return 'supporter' if owner.values[:plan_type].match /^plan_/
+    owner.values[:plan_type]
   end
 
   def latest_events(current_page=1, limit=10)

tests/api_tests.rb

@@ -251,5 +251,4 @@ end
 
 def res
   JSON.parse last_response.body, symbolize_names: true
-end
-
+end

views/settings/account/sites.erb

@@ -18,15 +18,19 @@
 
 <h3>Create New Site</h3>
 
-<p>You can now create new sites that are linked to this account! All of your sites will share the free space you have available.</p>
+<% if current_site.plan_feature(:unlimited_site_creation) %>
+  <p>You can now create new sites that are linked to this account! All of your sites will share the free space you have available.</p>
 
-<form action="/settings/create_child" method="POST">
-  <%== csrf_token_input_html %>
-  
-  <p>Site Name:</p>
-  <input name="username" type="text">
+  <form action="/settings/create_child" method="POST">
+    <%== csrf_token_input_html %>
+    
+    <p>Site Name:</p>
+    <input name="username" type="text">
 
-  <div>
-    <input class="btn-Action" type="submit" value="Create New Site">
-  </div>
-</form>
+    <div>
+      <input class="btn-Action" type="submit" value="Create New Site">
+    </div>
+  </form>
+<% else %>
+  <p>Multiple site creation is only available for supporter accounts. <a href="/plan">Upgrade now</a>!</p>
+<% end %>