68 lines
1.7 KiB
Ruby
68 lines
1.7 KiB
Ruby
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require 'fastercsv'
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class Map < ActiveRecord::Base
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def self.from_city_name(city_name)
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self.find_or_initialize_by_name(city_name).save!
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end
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def self.pair
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second = nil
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max_tries = self.count
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tries = 0
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while second.nil? && tries < max_tries
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first = self.all(:order => 'RANDOM()', :limit => 1).first
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second = self.all(:order => 'RANDOM()', :limit => 1,
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:conditions => [%{
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(
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points >= :first_points
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AND id <> :first_id
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) OR (
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id NOT IN (
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SELECT map_a_id
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FROM mashes
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WHERE map_b_id = :first_id
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)
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AND id NOT IN (
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SELECT map_b_id
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FROM mashes
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WHERE map_a_id = :first_id
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)
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)}, {
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:first_id => first.id,
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:first_points => first.points
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}
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]
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).first
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tries += 1
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end
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if second.nil?
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logger.error('OH CRAP thar be no more pairings for ye olde mashes')
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[first, first]
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else
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[first, second]
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end
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end
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def self.import(csv_filename)
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FasterCSV.parse(open(csv_filename), :headers => true,
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:header_converters => [:downcase, :symbol]).each do |row|
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map = self.find_or_initialize_by_name("#{row[:city]}, #{row[:region]}")
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map.save
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if block_given?
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yield map
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end
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end
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end
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def self.mashes
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Mash.all(:conditions => ['map_a = :id OR map_b = :id', {:id => self.id}])
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end
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def rounds
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Mash.count(:conditions => ['map_a = :id OR map_b = :id', {:id => self.id}])
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end
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end
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