60 lines
2.1 KiB
Ruby
60 lines
2.1 KiB
Ruby
module JamRuby
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class Region < ActiveRecord::Base
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self.table_name = 'regions'
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def self.get_all(country)
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self.where(countrycode: country).order('regionname asc').all
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end
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def self.import_from_region_codes(file)
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# File region_codes.csv
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# Format:
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# countrycode,region,regionname
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# what this does is replace the contents of the table with the new data.
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self.transaction do
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self.connection.execute "delete from #{self.table_name}"
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File.open(file, 'r:ISO-8859-1') do |io|
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saved_level = ActiveRecord::Base.logger ? ActiveRecord::Base.logger.level : -1
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count = 0
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errors = 0
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ncols = 3
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csv = ::CSV.new(io, {encoding: 'ISO-8859-1', headers: false})
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csv.each do |row|
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raise "file does not have expected number of columns (#{ncols}): #{row.length}" unless row.length == ncols
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countrycode = row[0]
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region = row[1]
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regionname = row[2]
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if countrycode.length == 2 and region.length == 2 and regionname.length >= 2 and regionname.length <= 64
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stmt = "INSERT INTO #{self.table_name} (countrycode, region, regionname) VALUES (#{self.connection.quote(countrycode)}, #{self.connection.quote(region)}, #{self.connection.quote(regionname)})"
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self.connection.execute stmt
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count += 1
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if ActiveRecord::Base.logger and ActiveRecord::Base.logger.level < Logger::INFO
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ActiveRecord::Base.logger.debug "... logging updates to #{self.table_name} suspended ..."
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ActiveRecord::Base.logger.level = Logger::INFO
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end
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else
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ActiveRecord::Base.logger.warn("bogus region_codes record '#{countrycode}', '#{region}', '#{regionname}'") if ActiveRecord::Base.logger
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errors += 1
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end
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end
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if ActiveRecord::Base.logger
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ActiveRecord::Base.logger.level = saved_level
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ActiveRecord::Base.logger.debug "inserted #{count} records into #{self.table_name}, #{errors} errors"
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end
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end # file
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end # transaction
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end
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end
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end
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