df959b74f6
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.
10 lines
337 B
Ruby
10 lines
337 B
Ruby
class MergeActivitiesAndNotifications < ActiveRecord::Migration[4.2]
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def change
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remove_column :notifications, :read, :boolean, default: false
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remove_index :notifications, column: [:activity_id]
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remove_column :notifications, :activity_id, :integer
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add_reference :notifications, :notifiable, polymorphic: true
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end
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end
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