While I don't use this feature, there are developers who do. It's useful when running migrations and changing branches. I'm raising an `ActiveRecord::IrreversibleMigration` exception in every `drop_table` migration because these migrations were all done before version 1.0.0, and so making all of them reversible would be too much work for little benefit.
8 lines
308 B
Ruby
8 lines
308 B
Ruby
class AddDefaultToRecountAmounts < ActiveRecord::Migration[4.2]
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def change
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change_column_default :poll_recounts, :white_amount, from: nil, to: 0
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change_column_default :poll_recounts, :null_amount, from: nil, to: 0
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change_column_default :poll_recounts, :total_amount, from: nil, to: 0
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end
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end
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