Ok still working on my Many to Many association.  I'm having a slight 
problem with the create method in the controller.

Here is the code

  def create
    @space = Space.find_by_id(params[:space][:id])
    hobo_create do
      @this.spaces=[@space]
      @this.building = @space.floor.building
      #@this.save!
      redirect_to @space if valid?
    end
  end

As coded above the spaces get saved to the db fine but the building doesn't. 
 I must uncomment the @this.save! to get the building to be saved to the db. 
 Any idea why or how to work around doing a second save to the db?

Note: spaces is the many to many link while the building is the belongs_to 
side of a one to many link

Bob

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