18 lines
318 B
Ruby
18 lines
318 B
Ruby
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class DeleteNullAtMessages < ActiveRecord::Migration
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def up
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count = AtMessage.all.count / 30 + 2
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transaction do
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for i in 1 ... count do i
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AtMessage.page(i).per(30).each do |am|
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if am.at_message.nil?
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am.destroy
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end
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end
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end
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end
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end
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def down
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end
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end
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