FIXES:

* Inflections für Thema/Themen etc.
  * Korrigierte Views

app/models/frage.rb

@@ -1,10 +1,9 @@
 class Frage < ActiveRecord::Base
-  has_paper_trail
   attr_accessible :text, :title
   belongs_to :thema
   
   validates :thema, :presence => true
-  validates :title, :prescece => true
+  validates :title, :presence => true
   
   translates :title,:text, :versioning =>true, :fallbacks_for_empty_translations => true
 end

app/models/frage.rb~

@@ -1,3 +1,10 @@
 class Frage < ActiveRecord::Base
+  has_paper_trail
   attr_accessible :text, :title
+  belongs_to :thema
+  
+  validates :thema, :presence => true
+  validates :title, :presence => true
+  
+  translates :title,:text, :versioning =>true, :fallbacks_for_empty_translations => true
 end

app/models/thema.rb

@@ -1,10 +1,11 @@
 class Thema < ActiveRecord::Base
-  has_paper_trail
   attr_accessible :text, :title
   has_many :fragen
   has_many :attachments
-  belongs_to :themengruppe
+  belongs_to :themengruppe, :foreign_key => "themengruppe_id"
   
   validates :themengruppe, :presence => true
   validates :title, :presence => true
+
+  translates :title,:text, :versioning =>true, :fallbacks_for_empty_translations => true
 end

app/models/thema.rb~

@@ -1,5 +1,11 @@
 class Thema < ActiveRecord::Base
   attr_accessible :text, :title
   has_many :fragen
+  has_many :attachments
   belongs_to :themengruppe
+  
+  validates :themengruppe, :presence => true
+  validates :title, :presence => true
+
+  translates :title,:text, :versioning =>true, :fallbacks_for_empty_translations => true
 end

app/models/themengruppe.rb

@@ -1,8 +1,9 @@
 class Themengruppe < ActiveRecord::Base
-  has_paper_trail
   attr_accessible :text, :title
   has_many :themen
   has_many :fragen, through: :themen
   
   validates :title, :presence => true
+
+  translates :title,:text, :versioning =>true, :fallbacks_for_empty_translations => true
 end

app/models/themengruppe.rb~

@@ -1,3 +1,8 @@
 class Themengruppe < ActiveRecord::Base
+  has_paper_trail
   attr_accessible :text, :title
+  has_many :themen
+  has_many :fragen, through: :themen
+  
+  validates :title, :presence => true
 end