class UserVisit < ActiveRecord::Base def self.counts_by_day_query(start_date, end_date, group_id = nil) result = where('visited_at >= ? and visited_at <= ?', start_date.to_date, end_date.to_date) if group_id result = result.joins("INNER JOIN users ON users.id = user_visits.user_id") result = result.joins("INNER JOIN group_users ON group_users.user_id = users.id") result = result.where("group_users.group_id = ?", group_id) end result.group(:visited_at).order(:visited_at) end def self.count_by_active_users(start_date, end_date) sql = <<~SQL WITH dau AS ( SELECT date_trunc('day', user_visits.visited_at)::DATE AS date, count(distinct user_visits.user_id) AS dau FROM user_visits WHERE user_visits.visited_at::DATE >= :start_date::DATE AND user_visits.visited_at <= :end_date::DATE GROUP BY date_trunc('day', user_visits.visited_at)::DATE ORDER BY date_trunc('day', user_visits.visited_at)::DATE ) SELECT date, dau, (SELECT count(distinct user_visits.user_id) FROM user_visits WHERE user_visits.visited_at::DATE BETWEEN dau.date - 29 AND dau.date ) AS mau FROM dau SQL DB.query_hash(sql, start_date: start_date, end_date: end_date) end # A count of visits in a date range by day def self.by_day(start_date, end_date, group_id = nil) counts_by_day_query(start_date, end_date, group_id).count end def self.mobile_by_day(start_date, end_date, group_id = nil) counts_by_day_query(start_date, end_date, group_id).where(mobile: true).count end def self.ensure_consistency! DB.exec <<~SQL UPDATE user_stats u set days_visited = ( SELECT COUNT(*) FROM user_visits v WHERE v.user_id = u.user_id ) WHERE days_visited <> ( SELECT COUNT(*) FROM user_visits v WHERE v.user_id = u.user_id ) SQL end end # == Schema Information # # Table name: user_visits # # id :integer not null, primary key # user_id :integer not null # visited_at :date not null # posts_read :integer default(0) # mobile :boolean default(FALSE) # time_read :integer default(0), not null # # Indexes # # index_user_visits_on_user_id_and_visited_at (user_id,visited_at) UNIQUE # index_user_visits_on_user_id_and_visited_at_and_time_read (user_id,visited_at,time_read) # index_user_visits_on_visited_at_and_mobile (visited_at,mobile) #