Displaying events On calendar Cell , Like Backpack

Hi Geeks,

I have been struggling ahrd to show events on a calendar cells.
I used the calendar_helper plugin and defined a todo scaffold

The controller is:

def index

@todos = current_user.todos

@[email protected]_all_by_due(start_date)

  respond_to do |format|
  format.html # index.html.erb
  format.xml  { render :xml => @todos }
end

end

error faced when the view is

<%=calendar(:year => @year, :month => @month ) do |d|
@todo_by_date.body
end%>

ERROR => undefined method `body’ for #Array:0x61054b8

& when
<%=calendar(:year => @year, :month => @month ) do |d|
@todos.find_all_by_due(d)
end%>

ERROR => undefined method `map’ for #Todo:0x6381854

whats the best way to show events on cells ?
Any help will be highly appreciated.

regards
Sanjay