Edit todo item

edittodomethods.rb

...
def edit                                                                                                                                                                                      
  @todo = Todo.find(params[:id])                                                                                                                                                              
  if @todo.nil?                                                                                                                                                                               
    flash[:notice] = "Empty item"                                                                                                                                                             
    redirect_to :action => 'index'                                                                                                                                                            
  end                                                                                                                                                                                         
end                                                                                                                                                                                           
                                                                                                                                                                                                
def update                                                                                                                                                                                    
  @todo = Todo.find(params[:id])                                                                                                                                                              
  if @todo.update_attributes params[:todo]                                                                                                                                                    
    flash[:notice] = 'Item edited'                                                                                                                                                            
    redirect_to :action => 'index'                                                                                                                                                            
  else                                                                                                                                                                                        
    render "edit"                                                                                                                                                                             
  end                                                                                                                                                                                         
end
...