url

app/models/communication/website/agenda/event.rb

@@ -136,6 +136,14 @@ class Communication::Website::Agenda::Event < ApplicationRecord
     abouts_with_agenda_block
   end
 
+  def url
+    return unless published
+    return if website.url.blank?
+    return if website.special_page(Communication::Website::Page::CommunicationAgenda)&.path.blank?
+    return if current_permalink_in_website(website).blank?
+    "#{Static.remove_trailing_slash website.url}#{Static.clean_path current_permalink_in_website(website).path}"
+  end
+
   def to_s
     "#{title}"
   end

app/views/admin/communication/websites/agenda/events/show.html.erb

@@ -37,6 +37,10 @@
 <% end %>
 
 <% content_for :action_bar_right do %>
+  <%= link_to t('open'),
+              @event.url,
+              target: :_blank,
+              class: 'btn btn-light btn-xs' if @event.url %>
   <%= edit_link @event %>
   <%= publish_link @event %>
 <% end %>