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class AddMissingIndexesToWatchers < ActiveRecord::Migration |
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def self.up |
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add_index :watchers, :user_id |
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add_index :watchers, [:watchable_id, :watchable_type] |
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end |
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def self.down |
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remove_index :watchers, :user_id |
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remove_index :watchers, :column => [:watchable_id, :watchable_type] |
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end |
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end |