ruby on rails: undefined method `_path' - ruby-on-rails

Question

I'm getting the error from line #7 of my views when I'm trying to create a new room:
undefined method `rooms_path' for #<#<Class:0x007fb46b5db2a0>:0x007fb46b5d9ec8>
I'm a little confused about why am I getting this error. I have built a relationship between Room and Facility that each Facility has many Rooms. The Facility part works bug free, I've been able to create/edit/show facilities.
Views (views/rooms/new.html.erb)
<div class="panel panel-default">
<div class="panel-heading">
Create your beautiful room
</div>
<div class="panel-body">
<div class="container">
<%= form_for #room do |f| %>
<div class="form-group">
<label>Name</label>
<%=f.text_field :room_name, placeholder: "What is the name of the room?", class: "form-control", required: true%>
</div>
<div><%= f.submit "Create This Room", class: "btn btn-normal" %></div>
<%end%>
</div>
</div>
</div>
My Room model (models/room.rb):
class Room < ApplicationRecord
belongs_to :facility
validates :room_type, presence: true
validates :room_name, presence: true
end
My Facility model (models/facility.rb):
class Facility < ApplicationRecord
belongs_to :user
has_many :photos
has_many :rooms
validates :facility_name, presence: true
validates :address, presence: true
validates :license, presence: true
validates :phone, presence: true
def cover_photo(size)
if self.photos.length > 0
self.photos[0].image.url(size)
else
"blank.jpg"
end
end
end
My Rooms Controller(controllers/rooms_controller.rb)
class RoomsController < ApplicationController
before_action :set_room, except: [:index, :new, :create]
def index
#facility = Facility.find(params[:facility_id])
#rooms = #facility.rooms
end
def new
#facility = Facility.find(params[:facility_id])
#room = #facility.rooms.build
end
end
Routes (routes.rb)
Rails.application.routes.draw do
devise_for :users,
path: '',
path_names: {sign_in: 'login', sign_out: 'logout', edit: 'profile', sign_up: 'registration'},
controllers: {omniauth_callbacks: 'omniauth_callbacks', registrations: 'registrations'}
resources :users, only: [:show]
resources :facilities, except: [:edit] do
member do
get 'listing'
get 'pricing'
get 'features'
get 'services'
get 'types_care'
get 'photo_upload'
get 'room_upload'
end
resources :rooms, except: [:edit] do
member do
get 'listing'
get 'pricing'
get 'photo_upload'
end
end
resources :photos, only: [:create, :destroy]
end
end
Been stuck on this for a couple of days and would really appreciate the help :) Thanks so much in advance!

Answer 1

form_for generate url based on class of #room, it doesn't include outer resource. Thus, you have to tell Rails to do that explicitly using below statement:
<%= form_for [#room.facility, #room] do |f| %>

Answer 2

Choose any of the following for form_for instead of <%= form_for #room do |f| %> as your routes are nested
<%= form_for #room, url: [#room.facility, #room] do |f| %>
<%= form_for #room, url: [:facility, #room] do |f| %>
<%= form_for [#room.facility, #room] do |f| %>
<%= form_for [:facility, #room] do |f| %>
Here you can get more detail about form_for helper