12 lines
355 B
Ruby
12 lines
355 B
Ruby
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class RemoveDuplicateEmailReceived < ActiveRecord::Migration[5.0]
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def change
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all_mails = MailReceived.all
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groupped = all_mails.group_by { |m| m.procedure_id }
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filtered = groupped.reject { |k, v| v.length < 2 }
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filtered.each do |k, duplicate_mails|
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duplicate_mails.pop
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duplicate_mails.each(&:destroy)
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end
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end
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end
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