discourse/db/migrate/20140504174212_increment_re...

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class IncrementReservedTrustLevelBadgeIds < ActiveRecord::Migration[4.2]
def up
execute "ALTER SEQUENCE badges_id_seq START WITH 100"
max_badge_id = Badge.order('id DESC').limit(1).first.try(:id)
Badge.where('id > 0 AND id <= 100').find_each do |badge|
new_id = badge.id + max_badge_id + 100
UserBadge.where(badge_id: badge.id).update_all badge_id: new_id
badge.update_column :id, new_id
end
end
def down
raise ActiveRecord::IrreversibleMigration
end
end