* not allowing null description; not validating genres when not being updated; not validating terms on update

lib/jam_ruby/models/music_session.rb

@@ -3,7 +3,7 @@ module JamRuby
 
     self.primary_key = 'id'
 
-    attr_accessor :legal_terms
+    attr_accessor :legal_terms, :skip_genre_validation
     attr_accessible :creator, :description, :musician_access, :approval_required, :fan_chat, :fan_access
 
     belongs_to :creator, :inverse_of => :music_sessions, :class_name => "JamRuby::User", :foreign_key => "user_id"
@@ -23,11 +23,12 @@ module JamRuby
 
     after_save :require_at_least_one_genre, :limit_to_three_genres
 
+    validates :description, :presence => true
     validates :fan_chat, :inclusion => {:in => [true, false]}
     validates :fan_access, :inclusion => {:in => [true, false]}
     validates :approval_required, :inclusion => {:in => [true, false]}
     validates :musician_access, :inclusion => {:in => [true, false]}
-    validates :legal_terms, :inclusion => {:in => [true]}
+    validates :legal_terms, :inclusion => {:in => [true]}, :on => :create
     validates :creator, :presence => true
     validate :creator_is_musician
 
@@ -171,14 +172,18 @@ module JamRuby
     private
 
     def require_at_least_one_genre
-      if genres.count < Limits::MIN_GENRES_PER_RECORDING
-        errors.add(:genres, ValidationMessages::GENRE_MINIMUM_NOT_MET)
+      unless skip_genre_validation
+        if self.genres.count < Limits::MIN_GENRES_PER_RECORDING
+          errors.add(:genres, ValidationMessages::GENRE_MINIMUM_NOT_MET)
+        end
       end
     end
 
     def limit_to_three_genres
-      if genres.count > Limits::MAX_GENRES_PER_RECORDING
-        errors.add(:genres, ValidationMessages::GENRE_LIMIT_EXCEEDED)
+      unless skip_genre_validation
+        if self.genres.count > Limits::MAX_GENRES_PER_RECORDING
+          errors.add(:genres, ValidationMessages::GENRE_LIMIT_EXCEEDED)
+        end
       end
     end
   end