Mais bugfix

app/controllers/courses_controller.rb

@@ -104,7 +104,9 @@ class CoursesController < ApplicationController
 
 	protected
 	def find_course
-		params[:id] = Course.find(:first, :conditions => ['short_name = ?', params[:id]], :order => 'period desc').id if !params[:id].is_numeric? and !Course.find_by_short_name(params[:id]).nil?
+		if params[:id]
+			params[:id] = Course.find(:first, :conditions => ['short_name = ?', params[:id]], :order => 'period desc').id if !params[:id].is_numeric? and !Course.find_by_short_name(params[:id]).nil?
+		end
 		@course = params[:id] ? Course.find(params[:id]) : Course.new(params[:course])
 	end
 

test/fixtures/courses.yml

@@ -19,4 +19,5 @@ course_1:
   short_name: course1
   full_name: Firt Course
   description: Description goes here
+  period: <%= App.current_period %>