demarches-normaliennes/app/models/traitement.rb
Christophe Robillard 7002811ba5 optim count nb_dossiers per month for archive
`Traitement#count_dossiers_termines_by_month` removes n+1 queries

Co-authored-by: LeSim <mail@simon.lehericey.net>
2021-06-09 10:52:38 +02:00

37 lines
1.2 KiB
Ruby

# == Schema Information
#
# Table name: traitements
#
# id :bigint not null, primary key
# instructeur_email :string
# motivation :string
# processed_at :datetime
# state :string
# dossier_id :bigint
#
class Traitement < ApplicationRecord
belongs_to :dossier, optional: false
scope :termine_close_to_expiration, -> do
joins(dossier: :procedure)
.where(state: Dossier::TERMINE)
.where('dossiers.state' => Dossier::TERMINE)
.where("traitements.processed_at + (procedures.duree_conservation_dossiers_dans_ds * INTERVAL '1 month') - INTERVAL :expires_in < :now", { now: Time.zone.now, expires_in: Dossier::INTERVAL_BEFORE_EXPIRATION })
end
def self.count_dossiers_termines_by_month(procedure)
last_traitements_per_dossier = Traitement
.select('max(traitements.processed_at) as processed_at')
.where(dossier: procedure.dossiers.termine)
.group(:dossier_id)
.to_sql
sql = <<~EOF
select date_trunc('month', r1.processed_at) as month, count(r1.processed_at)
from (#{last_traitements_per_dossier}) as r1
group by date_trunc('month', r1.processed_at)
EOF
ActiveRecord::Base.connection.execute(sql)
end
end