Class: GtfsEngine::Calendar

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/gtfs_engine/calendar.rb

Class Method Summary collapse

Class Method Details

.from_date_string(date) ⇒ ActiveRecord_Relation

This method will add/remove entries listed in CalendarDate and will also filter out entries which don’t match the correct day-of-week.

TODO: Currently, this method does 3 SQL queries. Try to lower this.



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# File 'app/models/gtfs_engine/calendar.rb', line 35

def from_date_string(date)
  dates = GtfsEngine::CalendarDate.where date: date

  add = dates.where(exception_type: 1).pluck :service_id
  query =
    if add.any?
      where '((start_date <= :date AND end_date >= :date)
             OR service_id IN (:ids)', date: date, ids: add
    else
      where '(start_date <= :date AND end_date >= :date)', date: date
    end

  query = where_day_of_week query, date

  rem = dates.where(exception_type: 2).pluck :service_id
  if rem.any?
    query.where '(service_id NOT IN (?))', rem
  else
    query
  end
end