socialforge/db/migrate/048_allow_null_version_effe...

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2013-08-01 10:33:49 +08:00
class AllowNullVersionEffectiveDate < ActiveRecord::Migration
def self.up
change_column :versions, :effective_date, :date, :default => nil, :null => true
end
def self.down
raise IrreversibleMigration
end
end