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21 lines
643 B
Ruby
21 lines
643 B
Ruby
class FixIncomingLinks < ActiveRecord::Migration[4.2]
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def up
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execute "DROP INDEX incoming_index"
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add_column :incoming_links, :post_id, :integer
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remove_column :incoming_links, :updated_at
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remove_column :incoming_links, :url
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execute "UPDATE incoming_links l SET post_id = (
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SELECT p.id FROM posts p WHERE p.topic_id = l.topic_id AND p.post_number = l.post_number
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)"
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execute "DELETE FROM incoming_links WHERE post_id IS NULL"
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change_column :incoming_links, :post_id, :integer, null: false
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add_index :incoming_links, :post_id
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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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