Class: CityTimeZone::SeedData

Inherits:
Object
  • Object
show all
Defined in:
lib/city_time_zone/seed_data.rb

Constant Summary collapse

FIELDS = 
{
  :id              => 0,
  :name            => 1,
  :ascii_name      => 2,
  :alternate_names => 3,
  :latitude        => 4,
  :longitude       => 5,
  :country         => 8,
  :timezone        => 17
}
MAPPING = 
ActiveSupport::TimeZone::MAPPING.each_with_object({}) do |field, mapping|
  mapping[field.last] = field.first
end

Class Method Summary collapse

Class Method Details

.each ⇒ Object 



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# File 'lib/city_time_zone/seed_data.rb', line 22

def self.each
  # cities.txt is a city time zone data file from GeoNames (http://www.geonames.org/).
  File.open("data/cities.txt") do |f|
    f.each_line do |row|
      fields = row.split("\t")
      timezone = MAPPING[fields[FIELDS[:timezone]]]
      yield [fields[FIELDS[:ascii_name]], timezone] if timezone
    end
  end
end