Fix get_roles method of User model

Previous implementation was associating resources with all
the roles regardless of user role in the resource. ie:
if user is cfp member of conf1, the method was returning:
{ organizer => conf1,
  cfp => conf1,
  Info Desk => conf1,
  Volunteers Coordinator => conf1
}

app/helpers/application_helper.rb

@@ -274,7 +274,7 @@ module ApplicationHelper
   # Outputs the roles of a user, including the conferences for which the user has the roles
   # Eg. organizer(oSC13, oSC14), cfp(oSC12, oSC13)
   def show_roles(roles)
-    roles.map { |x| x[0].titleize + ' ' + x[1] }.join ', '
+    roles.map{ |x| x[0].titleize + ' (' + x[1].join(', ') + ')' }.join ', '
   end
 
   def can_manage_volunteers(conference)

app/models/user.rb

@@ -117,12 +117,16 @@ class User < ActiveRecord::Base
 
   # Gets the roles of the user, groups them by role.name and returns the resource(s) of each role
   # ====Returns
-  # * +Hash+ * ->  e.g. 'organizer' =>  "(conf1, conf2)"
+  # * +Hash+ * ->  e.g. 'organizer' =>  [conf1, conf2]
   def get_roles
     result = {}
-    Role.all.find_each do |role|
+    roles.each do |role|
-      resources = self.roles.map{ |myrole| Conference.find(myrole.resource_id).short_title }.join ', '
+      resource = Conference.find(role.resource_id).short_title
-      result[role.name] = "(#{ resources })" unless resources.blank?
+      if result[role.name].nil?
+        result[role.name] = [resource]
+      else
+        result[role.name] << resource
+      end
     end
     result
   end

spec/fixtures/test.txt

@@ -1 +0,0 @@
-Lorem ipsum dolorem...

spec/helpers/application_helper_spec.rb

@@ -0,0 +1,10 @@
+require 'spec_helper'
+
+describe ApplicationHelper, type: :helper do
+  describe 'show_roles' do
+    it 'formats the hash passed' do
+      roles = { 'organizer' => ['oSC16', 'oSC15'], 'cfp' => ['oSC16'] }
+      expect(show_roles(roles)).to eq 'Organizer (oSC16, oSC15), Cfp (oSC16)'
+    end
+  end
+end