30 lines
914 B
Ruby
30 lines
914 B
Ruby
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class RemoveStars < ActiveRecord::Migration
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def up
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r = execute <<SQL
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INSERT INTO post_actions(user_id, post_id, post_action_type_id, created_at, updated_at)
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SELECT tu.user_id, p.id, 1, coalesce(tu.starred_at, now()), coalesce(tu.starred_at, now())
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FROM topic_users tu
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JOIN posts p ON p.topic_id = tu.topic_id AND p.post_number = 1
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LEFT JOIN post_actions pa ON
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pa.post_id = p.id AND
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pa.user_id = tu.user_id AND
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pa.post_action_type_id = 1
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WHERE pa.post_id IS NULL AND tu.starred
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SQL
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puts "#{r.cmd_tuples} stars were converted to bookmarks!"
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execute <<SQL
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DELETE FROM user_actions WHERE action_type = 10
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SQL
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remove_column :topic_users, :starred
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remove_column :topic_users, :starred_at
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remove_column :topic_users, :unstarred_at
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remove_column :topics, :star_count
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end
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def down
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raise ActiveRecord::IrreversibleMigration
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end
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end
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