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class AddSubSystemsToSubnet < ActiveRecord::Migration
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def self.up
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add_column :subnets, :dhcp_id, :integer
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add_column :subnets, :tftp_id, :integer
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rename_column :subnets, :number, :network
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end
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def self.down
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remove_column :subnets, :dhcp_id
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remove_column :subnets, :tftp_id
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rename_column :subnets, :network, :number
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end
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end
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