Sort suggestions by speaker name

app/models/suggestion_group.rb

@@ -5,7 +5,7 @@ class SuggestionGroup
   def self.where(conditions = {})
     Event.joins(:track).includes(:user).where(conditions).group_by(&:user).map do |speaker, suggestions|
       SuggestionGroup.new speaker: speaker, suggestions: suggestions
-    end
+    end.sort_by { |group| group.speaker.name }
   end
 
   def self.for_conference(conference, conditions = {})

app/models/user.rb

@@ -13,6 +13,10 @@ class User < ActiveRecord::Base
 
   default_scope { order id: :desc }
 
+  def name
+    speaker_profile.try(:name) || email
+  end
+
   def toggle_admin!
     update admin: !admin
   end