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24 lines
628 B
24 lines
628 B
11 years ago
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class ChangeBikeShopId < ActiveRecord::Migration
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# We don't use change_column because we have arbitrary strings we
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# need to strip the characters from to make the integer values
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def up
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bikes = Bike.all
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remove_column :bikes, :shop_id
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add_column :bikes, :shop_id, :integer, :unique => true
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# deconflict shop ids
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bikes.each do |bike|
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new_id = bike.shop_id.gsub(/[^\d]/, '').to_i rescue 1
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while bikes.map(&:shop_id).include? new_id
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new_id += 1
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end
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bike.shop_id = new_id
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end
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bikes.each(&:save)
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end
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def down
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change_column :bikes, :shop_id, :string
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end
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end
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