lvas bei modulgruppen und studium hinzugefügt

app/models/studium.rb

@@ -30,7 +30,8 @@ class Studium < ActiveRecord::Base
   attr_accessible :desc, :name,:abkuerzung, :typ, :zahl, :semester, :picture, :picture_cache, :qualifikation,:struktur, :jobmoeglichkeiten
   has_many :modulgruppen, inverse_of: :studium, :class_name => "Modulgruppe", :dependent => :destroy
     scope :search, ->(query) {where("name like ? or studien.desc like ?", "%#{query}%", "%#{query}%")} 
-
+  has_many :moduls, :through=>:modulgruppen
+  has_many :lvas, :through=>:moduls
   has_many :semester, :dependent => :destroy
   validates :abkuerzung, :length=>{:maximum=>5}, :format=>{:with=>/^[a-zA-z]{0,5}$/}
   validates :typ, :inclusion => {:in => ["Bachelor","Master"] }