Speaker is displayed instead of submitter un public pages

app/controllers/proposal_controller.rb

@@ -138,6 +138,7 @@ class ProposalController < ApplicationController
 
   def show
     @event = Event.find(params[:id])
+    @speaker = @event.speakers.first || @event.submitter
   end
 
   def confirm

app/models/event.rb

@@ -8,6 +8,7 @@ class Event < ActiveRecord::Base
   has_many :event_people, :dependent => :destroy
   has_many :event_attachments, :dependent => :destroy
   has_many :people, :through => :event_people
+  has_many :speakers, :through => :event_people, :source => :person, :conditions => {"event_people.event_role" => "speaker"}
   belongs_to :event_type
 
   belongs_to :track

app/views/proposal/show.html.haml

@@ -38,15 +38,15 @@
       .span8
         %h3
           by
-          = @event.submitter.public_name
-          - if @event.submitter.company
+          = @speaker.public_name
+          - if @speaker.company
             %br
             %span.muted
               from
-              = @event.submitter.company
-        -if @event.submitter.biography
-          = simple_format(@event.submitter.biography)
+              = @speaker.company
+        -if @speaker.biography
+          = simple_format(@speaker.biography)
       .span4
-        = image_tag @event.submitter.gravatar_url(:size => 200), :class => "img-rounded pull-right", :style => "margin: 8px;"
+        = image_tag @speaker.gravatar_url(:size => 200), :class => "img-rounded pull-right", :style => "margin: 8px;"
 
 

app/views/schedule/index.html.erb

@@ -44,14 +44,15 @@
                          class="event" role="button"
                          data-href="<%= url_for(conference_proposal_path(@conference.short_title, event[0].id)) %>">
                     <h5>
-                      <%= image_tag event[0].submitter.gravatar_url, :class => "img-circle pull-right", :alt => event[0].submitter.public_name, :title => event[0].submitter.public_name, :style => "padding:8px;" %>
+                      <%- speaker = event[0].speakers.first || event[0].submitter %>
+                      <%= image_tag speaker.gravatar_url, :class => "img-circle pull-right", :alt => speaker.public_name, :title => speaker.public_name, :style => "padding:8px;" %>
                       <i class="icon-comment"></i>
                       <%= event[0].title %><br>
                       <% unless event[0].subtitle.empty? %>
                         <span class="text-error"><%= event[0].subtitle %></span><br>
                       <% end %>
                       <i class="icon-user"></i>
-                      <%= event[0].submitter.public_name %>
+                      <%= speaker.public_name %>
                       <% if event[0].track%>
                         <br><i class="icon-road"></i>
                         <span class="label" style="background-color:<%= event[0].track.color if event[0].track %>"><%= event[0].track.name %></span>