meetings added, documents added

app/models/document.rb

@@ -1,3 +1,9 @@
 class Document < ActiveRecord::Base
   attr_accessible :etherpadkey, :name, :parent, :text, :typ
+  belongs_to :parent, :polymorphic => true
+  validate :name, :length=>{minimum:3}
+  validate :text, :presence=>true
+  validate :typ, :presence=>true
+  validate :parent, :presence=>true
+  
 end