Various small fixes for the participant UI

app/models/ability.rb

@@ -105,7 +105,14 @@ class Ability
   # Abilities for everyone, even guests (not logged in users)
   def guest
     # can view conferences
-    can [:index, :show, :schedule], Conference 
+    can [:index], Conference
+    can [:show], Conference do |conference|
+      conference.splashpage && conference.splashpage.public == true
+    end
+    can [:schedule], Conference do |conference|
+      conference.call_for_paper && conference.call_for_paper.schedule_public
+    end
+
     # can view confirmed Events
     can :show, Event do |event|
       event.state == 'confirmed'

app/models/ticket_purchase.rb

@@ -13,11 +13,18 @@ class TicketPurchase < ActiveRecord::Base
                           scope: :ticket_id,
                           message: 'already bought this ticket!'
 
+  delegate :title, to: :ticket
+  delegate :description, to: :ticket
+  delegate :price, to: :ticket
+  delegate :price_cents, to: :ticket
+  delegate :price_currency, to: :ticket
+
   def self.purchase(conference, user, purchases)
     errors = []
     ActiveRecord::Base.transaction do
       conference.tickets.each do |ticket|
         quantity = purchases[ticket.id.to_s].to_i
+        # if the user bought the ticket, just update the quantity
         if ticket.bought?(user)
           purchase = update_quantity(conference, quantity, ticket, user)
         else

app/models/track.rb

@@ -4,6 +4,7 @@ class Track < ActiveRecord::Base
   has_many :events
 
   before_create :generate_guid
+  validates :name, presence: true
 
   private
 

app/models/user.rb

@@ -59,13 +59,17 @@ class User < ActiveRecord::Base
     self.subscriptions.find_by(conference_id: conference.id).present?
   end
 
-  # Returns the ticket purchased ticket
+  # Returns the purchased ticket
   # ====Returns
   # * +TicketUser::ActiveRecord_Relation+ -> user
   def ticket(id)
     ticket_purchases.where(ticket_id: id).first
   end
 
+  def supports? conference
+    ticket_purchases.find_by(conference_id: conference.id).present?
+  end
+
   def self.for_ichain_username(username, attributes)
     user = find_by(username: username)
 

app/models/venue.rb

@@ -17,7 +17,7 @@ class Venue < ActiveRecord::Base
   after_update :send_mail_notification
 
   def address
-    "#{conference.venue.street}, #{conference.venue.postalcode} #{conference.venue.city}, #{conference.venue.country}"
+    "#{street}, #{city}, #{country_name}"
   end
 
   def country_name