Semester "ohne zuordnung"

app/models/semester.rb

@@ -18,7 +18,6 @@ class Semester < ActiveRecord::Base
   belongs_to :studium, :foreign_key => "studium_id"
   validates :name, :presence => true
   validates :nummer, :presence => true
-  validates :ssws, :presence => true
   class << self
     def batch_add(name, type, target)
       if type == "Bachelor"
@@ -38,6 +37,12 @@ class Semester < ActiveRecord::Base
         semester.save
         target << semester
       end
+      semester = Semester.new()
+      semester.name = "Ohne Zuordnung"
+      semester.nummer = 0
+      semester.ssws = "WS"
+      semester.save
+      target << semester
     end
 
     def batch_destroy(studium)

app/views/studien/_semesteransicht.html.erb

@@ -4,7 +4,11 @@
 <%= raw(@studium.desc) %>
 <% @studium.semester.each do |sem| %>
   <div class="row-fluid">
+    <% if sem.nummer > 0 %>
     <h2><%= sem.nummer.to_s + ". Semester" %></h2>
+    <% else %>
+    <h2> Ohne Zuordnung </h2>
+    <% end %>
     <div class="span<%= sem[:width]%> min-width:13em;">
       <%= render :partial=>'lvas/lva_semester', :collection=>sem.lvas, :as=>:lva%>
     </div>