9 lines
237 B
Ruby
9 lines
237 B
Ruby
class AddParentIdToEnumerations < ActiveRecord::Migration[4.2]
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def self.up
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add_column :enumerations, :parent_id, :integer, :null => true, :default => nil
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end
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def self.down
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remove_column :enumerations, :parent_id
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end
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end
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