Group has_and_belongs_to_many - ruby-on-rails

Question

Given a model with ActiveStorage: DayFrame, Day, Session. Models and migration see below. DayFrame and Session are many-to-many relationship. day_frames_sessions intermediate join table that includes foreign keys referring to each of the classes DayFrame and Session. How can I get day_frames group by session and sort by day.date like this:
{session_id_1=> [DayFrame1, DayFram2, DayFram3], session_id_2 => [DayFrame2, DayFram1, DayFram4]}
class DayFrame
has_and_belongs_to_many :sessions
belongs_to :day
end
class Day
has_and_belongs_to_many :sessions
has_many :day_frames
end
class Session
has_and_belongs_to_many :conference_day_frames
end
The migrations are:
class CreateDay < ActiveRecord::Migration[5.2]
def up
create_table :days do |t|
t.date :date
t.string :day_type
t.timestamps
end
end
def down
drop_table :days
end
end
class CreateDayFrame < ActiveRecord::Migration[5.2]
def up
create_table :day_frames do |t|
t.string :name
t.time :begin_time
t.time :end_time
t.string :frame_type
t.timestamps
t.references :day, index: true
end
def down
drop_table :day_frames
end
end
class CreateSessions < ActiveRecord::Migration[5.2]
def up
create_table :sessions do |t|
t.integer :number, limit: 1
t.string :title
t.string :short_title
t.boolean :is_active
t.timestamps
end
end
def down
drop_table :sessions
end
end
class CreateDayFramesSessions < ActiveRecord::Migration[5.2]
def up
create_join_table :day_frames, :sessions do |t|
t.index :day_frame_id
t.index :session_id
end
end
def down
drop_table :day_frames_sessions
end
end