Object is being embedded in wrong parent mongoid - ruby-on-rails-3

Question

I'm currently trying to load in a CSV to my MongoDB using MongoID. It works to an extent except the embedded documents are saved under the same root document floor.
Essentially there currently is an information document that contains info about a building. Under the information document I embed floors and within floors I can embed rooms. Similar to the structure below:
Information
Floors
Rooms
:name
:thermostat_zone
My test CSV contains the following information:
floor room zone
1 101 A
1 102 A
1 102 B
1 104 C
1 105 D
1 106 E
1 107 F
1 108 G
4 109 G
2 201 H
2 202 I
2 204 J
2 207 J
2 209 K
2 208 L
2 210 M
3 214 N
3 215 O
3 216 P
3 225 Q
The only problem is that all of rooms currently embed under floor one, and I imagine there is something going on concerning object persistence eventhough whenever I take the time to print the floors out from the load in loop each floor is being printed out. I really hope someone can help me get beyond this problem! I come from a PHP/MYSQL background, so this is new to me.
#building_id = params[:building_id]
owner = Owner.where('buildings._id' => Moped::BSON::ObjectId(#building_id)).first
#building = owner.buildings.find(#building_id)
#building.information.floors.destroy
CSV.foreach(params[:file].path, headers: true) do |row|
floor_name = row['floor']
room_name = row['room']
zone_name = row['zone']
floor = Floor.new
floor = #building.information.floors.where('name' => floor_name).first
if !floor || floor == nil
floor = Floor.new
floor.name = floor_name
floor.information = #building.information
floor.save
end
room = Room.new
room.floor = floor
room.name = room_name
room.zone = zone_name
room.save
end
Also, code for both Room.rb and Information.rb incase it is needed:
class Room
include Mongoid::Document
embedded_in :floor, :inverse_of => :rooms
field :name
field :zone
end
Information.rb: (narrowed down to just embedding stuff to make it easier)
#Building information
class Information
include Mongoid::Document
embeds_many :floors, :cascade_callbacks => true
end
Thanks!

Answer 1

replace this
if !floor || floor == nil
floor = Floor.new
with
if !floor || floor == nil
floor = #building.information.floors.create!()
# OR
floor = #building.information.floors.create!(name: 'name', zone: 'A')
same goes with rooms
replace this
room = Room.new
with this
room = floor.rooms.create!()
# OR
room = floor.rooms.create!(name: 'name', zone: 'B')
this is because that mongoid doesn't set the parent of embedded docs using child.parrent_attr = parent doesn't work properly...