10 lines
237 B
Ruby
10 lines
237 B
Ruby
# encoding: UTF-8
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# frozen_string_literal: true
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class MakeSerialNumberUnique < ActiveRecord::Migration[4.2]
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def change
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remove_index :members, :sn if index_exists?(:members, :sn)
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add_index :members, :sn, unique: true
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end
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end
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