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class AddSubnetDomainRelationConstraints < ActiveRecord::Migration[4.2]
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def up
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change_column :subnet_domains, :subnet_id, :integer, :null => false
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change_column :subnet_domains, :domain_id, :integer, :null => false
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add_index(:subnet_domains, [:subnet_id, :domain_id], :unique => true)
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end
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def down
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remove_index(:subnet_domains, [:subnet_id, :domain_id])
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change_column :subnet_domains, :subnet_id, :integer, :null => true
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change_column :subnet_domains, :domain_id, :integer, :null => true
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end
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end
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