dependent and calendar

app/models/meeting.rb

@@ -7,7 +7,7 @@ class Meeting < ActiveRecord::Base
   belongs_to :neuigkeit, touch: true
   has_one :protocol,  :class_name=>'Document', :conditions=>{:typ=>10}, :as=>:parent
   has_one :agenda , :as=>:parent,:conditions=>{:typ=>11}, :class_name=>'Document'
-  has_one :calentry, as: :object
+  has_one :calentry, as: :object, :dependent=> :destroy
   has_one :calendar, :through=>:meetingtyp
   has_one :rubrik, :through=>:meetingtyp
   scope :upcomming, includes(:calentry).where("calentries.start>?",1.hour.ago)

app/models/neuigkeit.rb

@@ -17,8 +17,8 @@ class Neuigkeit < ActiveRecord::Base
   belongs_to :author, :class_name =>'User'
   belongs_to :rubrik, :class_name =>'Rubrik', :foreign_key => "rubrik_id"
   has_one :calendar, through: :rubrik  
-  has_many :calentries, as: :object
-  has_many :nlinks   
+  has_many :calentries, as: :object, :dependent=> :destroy
+  has_many :nlinks, :dependent=> :destroy   
   has_one :meeting
   has_many :attachments, :as=>:parent
   

app/views/rubriken/index.html.erb

@@ -39,7 +39,9 @@
 				<% cache("calendar_" + @calentries.map{|c| c.id}.join('') + @calentries.max{|c|c.updated_at.to_i}.updated_at.to_i.to_s+"_"+I18n.locale.to_s+params[:month].to_s+params[:year].to_s) do %>
 					<%= render 'calendars/calentries', :object=>@calentries %>
 				<% end %>      
-      
+				<% if current_user.has_role?(:fetuser) %>
+				<%= link_to calendars_path(:format=>:ics, :key=>Key.find_or_create(current_user,1).uuid) , calendars_path(:format=>:ics, :key=>Key.find_or_create(current_user,1).uuid)%>
+					<% end %>
 			</div>
 		</div>
 	</div>

app/views/rubriken/show.html.erb

@@ -52,7 +52,11 @@
 <%= render 'calendars/calentries', :object=>@calentries %>
 <% end %>
 <% end %>
-<%= link_to "ics-format", calendar_path(@rubrik.calendar,:format=>:ics,:key=>current_user.nil? ? nil : Key.where(typ: 1, user_id: current_user.id,is_valid: true).last.try(:uuid)) %>
+<% if current_user.has_role?(:fetuser) %>
+	<%= link_to calendar_path(@rubrik.calendar,:format=>:ics, :key=>Key.find_or_create(current_user,1).uuid) , calendars_path(:format=>:ics, :key=>Key.find_or_create(current_user,1).uuid)%>
+<% end %>
+
+
 </div>
 
 </div>