rails namespace form does not write data to database - ruby-on-rails

Question

i´m new to rails and like to know why my form does not write the data to the database?
if i show the data in the controller like
render text: params[:post].inspect
it is showing me the correct details. if i send the form to the database is showing just a new id and the created_at and updated_at data.
maybe there is someone who can help me...
here are my files:
LOG:
tarted POST "/manage/rooms" for 127.0.0.1 at 2014-03-12 09:45:28 +0100
Processing by Manage::RoomsController#create as HTML
Parameters: {"utf8"=>"✓","authenticity_token"=>"7IrPpFfkK4Krc4u6YYpUcaCp+",
"rooms"=>{"number_of_rooms"=>"1", "occupancy"=>"1", "room_type"=>"Private Room",
"gender"=>"mixed", "title"=>"foo"}, "commit"=>"Save Rooms"} (0.2ms) BEGIN
SQL (0.4ms) INSERT INTO "rooms" ("created_at", "updated_at") VALUES ($1, $2)
RETURNING "id" [["created_at", Wed, 12 Mar 2014 08:45:28 UTC +00:00],
["updated_at", Wed, 12 Mar 2014 08:45:28 UTC +00:00]] (660.8ms) COMMIT
Redirected to http://localhost:3000/manage/rooms/27
Completed 302 Found in 664ms (ActiveRecord: 661.3ms)
controller: ( controllers/manage/room_cont...)
class Manage::RoomsController < ApplicationController
def new
end
def create
#render text: params[:rooms].inspect
#room = Room.new(params[:room])
#room.save
redirect_to [:manage, #room]
end
def show
#room = Room.find(params[:id])
end
private
def room_params
params.require(:room).permit(:number_of_rooms, :occupancy, :room_type, :gender, :title)
end
end
model: (models/room.rb )
class Room < ActiveRecord::Base
end
form: ( /views/manage/rooms/form.html... )
<%= simple_form_for [:manage, #room], manage_room_path do |f| %>
<p>
<%= f.input :number_of_rooms, collection: 1..20, :include_blank => false %>
</p>
<p>
<%= f.input :occupancy, collection: 1..20, :include_blank => false %>
</p>
<p>
<%= f.input :room_type, collection: ["Private Room", "Shared Room (Dorm)"],:include_blank => false %>
</p>
<p>
<%= f.input :gender, collection: ["mixed", "male", "female"], :include_blank => false %>
</p>
<P>
<%= f.label :title %><br>
<%= f.text_field :title %>
</p>
<p>
<%= f.submit %>
</p>
<% end %>
routes:
manage_rooms GET /manage/rooms(.:format) manage/rooms#index
POST /manage/rooms(.:format) manage/rooms#create
new_manage_room GET /manage/rooms/new(.:format) manage/rooms#new
edit_manage_room GET /manage/rooms/:id/edit(.:format) manage/rooms#edit
manage_room GET /manage/rooms/:id(.:format) manage/rooms#show
PATCH /manage/rooms/:id(.:format) manage/rooms#update
PUT /manage/rooms/:id(.:format) manage/rooms#update
DELETE /manage/rooms/:id(.:format) manage/rooms#destroy
Thanks!

Answer 1

In your create action:
#room = Room.new(room_params)
and in your room_params method, do: params.require(:rooms).permit...