Ordem correta

app/controllers/log_controller.rb

@@ -20,9 +20,9 @@ class LogController < ApplicationController
 
 	def index
 		if @course
-			@log_entries = @course.log_entries.paginate(:page => params[:page], :per_page => 30)
+			@log_entries = @course.log_entries.paginate(:page => params[:page], :per_page => 30, :order => "created_at desc")
 		else
-			@log_entries = LogEntry.paginate(:page => params[:page], :per_page => 30) 
+			@log_entries = LogEntry.paginate(:page => params[:page], :per_page => 30, :order => "created_at desc") 
 		end
 
 		respond_to do |format|

app/models/course.rb

@@ -41,6 +41,9 @@ class Course < ActiveRecord::Base
 	         :order => "position",
 	         :dependent => :destroy
 
+	has_and_belongs_to_many :users,
+	         :order => "last_seen desc"
+	
 	# Validacao
 	generate_validations
 	validates_format_of :short_name, :with => /^[^0-9]/

app/models/log_entry/wiki_log_entry.rb

@@ -30,7 +30,7 @@ class WikiDeleteLogEntry < WikiLogEntry
 	end
 	def undo!(current_user)
 		wiki_page.update_attribute(:deleted_at, nil)
-		wiki_page.update_attribute(:position, wiki_page.course.wiki_pages.maximum(:position) + 1)
+		wiki_page.update_attribute(:position, (wiki_page.course.wiki_pages.maximum(:position)||0) + 1)
 		WikiRestoreLogEntry.create!(:target_id => wiki_page.id, :user_id => current_user.id, :course => wiki_page.course)
 	end
 end

app/views/log/index.html.haml

@@ -15,9 +15,9 @@
           .date
             = tz(entry.created_at).strftime("%H:%M")
           %img.avatar{:src => gravatar_url_for(entry.user.email, 27)}
-          = "Disciplina " + link_to(h(entry.course.full_name), course_url(entry.course))
-          %br
           =link_to truncate(h(entry.user.display_name), :length => 20), user_url(entry.user.id)
           = render(:partial => 'log/log_entry', :locals => { :entry => entry }) 
+          %br
+          = "Disciplina " + link_to(h(entry.course.full_name), course_url(entry.course))
 
 = will_paginate @log_entries