22 lines
762 B
Ruby
22 lines
762 B
Ruby
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class MigrateUsersNotificationLevel < ActiveRecord::Migration
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# Migrates only users who changed their default notification level :participating
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# creating a new record on notification settings table
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def up
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execute(%Q{
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INSERT INTO notification_settings
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(user_id, level, created_at, updated_at)
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(SELECT id, notification_level, created_at, updated_at FROM users WHERE notification_level != 1)
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})
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end
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# Migrates from notification settings back to user notification_level
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# If no value is found the default level of 1 will be used
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def down
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execute(%Q{
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UPDATE users u SET
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notification_level = COALESCE((SELECT level FROM notification_settings WHERE user_id = u.id AND source_type IS NULL), 1)
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})
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end
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end
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