Rails4: How to display the data in many has_many models - ruby-on-rails

Question

I'd like to develop an app for schedule.
Each user create their own schedule.
I'd like to display the data as followings;
schedule title (user name)
day1(mm/dd,yyyy)
09:00 Math
11:00 Science
Room name A
day2(mm/dd,yyyy)
10:00 Physics
13:00 Music
Room name B
Although I can display the schedule title and user name, I couldn't display the date(mm/dd, yyyy) and room name. (I haven't make a model for course name and time)
It would be appreciated if you could give me any suggestion.
user.rb
class User < ActiveRecord::Base
has_many :schedlues
...
schedule.rb
class Schedule < ActiveRecord::Base
belongs_to :user
has_many :rooms
...
room.rb
class Room < ActiveRecord::Base
belongs_to :schedlue
schema
create_table "users", force: :cascade do |t|
t.string "name"
t.string "email"
...
end
create_table "schedules", force: :cascade do |t|
t.string "title"
t.integer "user_id"
...
end
create_table "rooms", force: :cascade do |t|
t.date "date"
t.string "room_name"
t.integer "schedule_id"
...
end
I haven't made a model for course name, time yet.
users_controller.rb
class UsersController < ApplicationController
def show
#user = User.find(params[:id])
#schedules = #user.schedules.paginate(page: params[:page])
end
...
show.html.erb
<% if #user.schedules.any? %>
<ol class="schedules">
<%= render #schedules %>
</ol>
<%= will_paginate #schedules %>
<% end %>
_schedule.html.erb
<li>
<span class="content"><%= schedule.title %>(<%= schedule.user.name %>)</span>
#Although I tried to display date and room name here, I couldn't.
</li>

Answer 1

You need to use has_many + through relationship over here.
See, a user has_many schedules, and one schedule has many rooms. So indirectly a user has_many rooms as well. You gotta write the following line of code in User model:
class User < ActiveRecord::Base
has_many :schedules
has_many :rooms, through: :schedules
end
Now, you can directly call rooms on a user object like following:
user = User.last
user.rooms.each do |room|
puts room.room_name # calling it simply `name` would be more appropriate.
end