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class ViewsToTopicViews < ActiveRecord::Migration[4.2]
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def change
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remove_column :views, :parent_type
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rename_column :views, :parent_id, :topic_id
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rename_table :views, :topic_views
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add_index :topic_views, [:topic_id]
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add_index :topic_views, [:user_id, :topic_id]
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end
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end
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