class Staff < ApplicationRecord
  belongs_to :account
  belongs_to :laboratory, optional: true
  has_many :treatments
  attribute :qualifications, :string, array: true

  delegate :name, to: :account
  delegate :phone_number, to: :account
  delegate :pager_number, to: :account
end

=begin

Find which physicians performed a treatment each day.

treatment | day(treatment.occurred_at) | staff.name | count(treatment_id)

SELECT treatments.id, date(treatments.occurred_at), staff.id, count(treatments.id)
FROM "treatments"
INNER JOIN "patients" ON "patients"."id" = "treatments"."patient_id"
INNER JOIN "staff" ON "staff"."id" = "patients"."physician_id" AND "staff"."type" = $1
INNER JOIN "accounts" ON "accounts"."id" = "staff"."account_id"
WHERE (occurred_at > '2020-03-14 21:00:39.156746')
GROUP BY "treatments"."id", DATE(treatments.occurred_at), staff.id
ORDER BY "treatments"."id" DESC LIMIT $2  [["type", "Physician"],
=end