I keep getting an undefined method for a class - ruby-on-rails

Question

I've been searching and searching but I cannot find anything to help me with this. I am building an app that allows you to schedule a meeting in a room. The error I'm receiving is
undefined method 'room_id' for #<Room:0x007fa25cc51128>
Here is where the error is occuring in my application.html.erb:
<li><%= link_to "Schedule a Meeting", new_room_meeting_path(#user, #meeting, #room.room_id)%></li>
Here is my meetings controller:
class MeetingsController < ApplicationController
before_action :authenticate_user!
def new
#meeting = Meeting.new
#rooms = Room.all
#room = Room.find(params[:room_id])
end
def index
#meetings = Meeting.all
end
def show
#meeting = Meeting.find(params[:id])
#comments = #meeting.comments
#room = Room.find(params[:id])
end
def create
#user = User.find(params[:user_id])
#meeting = #user.meetings.create(meeting_params)
NotificationMailer.meeting_scheduled(#meeting).deliver_now
if #meeting.save
redirect_to root_path, flash: { notice: "Congratulations!!! Your meeting has been scheduled successfully!!!"}
else
render :new
end
end
private
def meeting_params
params.require(:meeting).permit(:name, :start_time, :end_time, :user_id, :room_id)
end
end
Here is my Meeting model:
require 'twilio-ruby'
class Meeting < ActiveRecord::Base
belongs_to :user
belongs_to :room
has_many :comments
validates_presence_of :user_id, :room_id, :name
def meeting_author_email
user.try(:email)
end
def self.send_reminder_text_message(body, phone)
#account_sid = ENV['twilio_account_sid']
#auth_token = ENV['twilio_auth_token']
#from_phone_number = ENV['twilio_phone_number']
#twilio_client = Twilio::REST::Client.new(#account_sid, #auth_token)
#twilio_client.account.messages.create( to: phone,
from: #from_phone_number,
body: body
)
end
def start_timestamp
(start_time - 6.hours).strftime('%b %e, %l:%M %p')
end
def end_timestamp
(end_time - 6.hours).strftime('%b %e, %l:%M %p')
end
end
The correct URI is: /rooms/:room_id/meetings/new(.:format)
I don't know what the problem is and it is really frustrating me. Any help would be greatly appreciated. I've searched over and over and have been unable to resolve this.
Thanks.

Answer 1

Your Room model doesn't have a column called room_id, but it does have a column called id. Every object in your application has an automatically generated id column as part of the "magic" of Rails. The room_id column that you seem to want belongs to the meetings table, but you indicated that it should come from your room object.
Replace the line:
Schedule a Meeting", new_room_meeting_path(#user, #meeting, #room.room_id)%></li>
with:
Schedule a Meeting", new_room_meeting_path(#user, #meeting, #meeting.room_id)%></li>

Answer 2

Since you stated the URI is "/rooms/:room_id/meetings/new(.:format)", the first part of the fix is to use the :id attribute instead of the: room_id attribute on your #room object, and second to remove the unnecessary objects from your route. You only need the id attribute for a valid URI:
<li><%= "Schedule a Meeting", new_room_meeting_path(#room.id)%></li>

Answer 3

Turns out I was calling the wrong URI.. The correct one was:
<li><%= link_to "Schedule a Meeting", new_user_meeting_path(current_user) %></li>
Is what did the trick. I also made the mistake of not dealing with seed data properly which really threw me for a loop. So once again, THANKS again to all who helped me out. I was working on an old project so I had a lot to go over.