Rails not ordering by date for this query - ruby-on-rails

Question

I'm currently working on a website where a parent can reserve classes for their kids. In the parent's dashboard, I'd like to show a table of schedules and in every row there will be the child's name associated with a schedule. Unfortunately I have problem ordering the schedules by date in the parent's dashboard.
# view
<% #reservations.each do |reservation| %>
<%= reservation.child.first_name %>
<%= reservation.schedule.date %>
<%= reservation.schedule.start_time %> - <%= reservation.schedule.end_time %>
<%= link_to reservation.schedule.klass.name, schedule_path(reservation.schedule) %></td>
<%= link_to reservation.schedule.partner.company, partner_path(reservation.schedule.partner) %></td>
<%= reservation.schedule.city.name %></td>
<% end %>
# associations
User
has_many :children, dependent: :destroy
has_many :reservations
has_many :schedules, through: :reservations
Child
belongs_to :user
has_many :reservations, dependent: :destroy
has_many :schedules, through: :reservations
Reservation
belongs_to :child
belongs_to :schedule
belongs_to :user
Schedule
belongs_to :city
belongs_to :partner
belongs_to :activity
belongs_to :klass
has_many :reservations
has_many :children, through: :reservations
I've got a default scope in my Schedule model that orders by date, start_time and end_time.
# Schedule model
default_scope { order(:date, :start_time, :end_time) }
This scope works in other tables, but not for this query:
# controller
#reservations = current_user.reservations.includes(:child, schedule: [:partner, :klass, :city])
It just refuses to order by date and time in the browser:
The log shows that the query for Schedule is indeed being ordered:
Reservation Load (0.3ms) SELECT "reservations".* FROM "reservations" WHERE "reservations"."user_id" = $1 [["user_id", 1]]
Child Load (0.4ms) SELECT "children".* FROM "children" WHERE "children"."id" IN (1, 2, 3)
Schedule Load (0.4ms) SELECT "schedules".* FROM "schedules" WHERE "schedules"."id" IN (24, 12) ORDER BY "schedules"."date" ASC, "schedules"."start_time" ASC, "schedules"."end_time" ASC
Partner Load (0.3ms) SELECT "partners".* FROM "partners" WHERE "partners"."id" IN (2)
Klass Load (0.3ms) SELECT "klasses".* FROM "klasses" WHERE "klasses"."id" IN (9, 17)
City Load (0.4ms) SELECT "cities".* FROM "cities" WHERE "cities"."id" IN (28)
I could do this query in the controller instead:
#schedules = current_user.schedules
but then I'd have problem showing only a single child's name for each schedule since a class schedule can have many children associated for it.
Help?

Answer 1

You've defined an ordering on the default scope for Schedule, but you are pulling your relation from Reservation. As a result, the schedules are queried in the order specified, but since presumably you're looping through the #reservations in your view, you see their order and not their schedules's order. You can order #reservations by fields on the schedules table like so:
#reservations = #reservations.order("schedules.date ASC, schedules.start_time ASC, schedules.end_time ASC")
Also note that defining a default_scope in the model is generally discouraged (on SO and elsewhere) because its difficult to manage and can cause unexpected and unintuitive effects, especially down the road.