2017-08-31 12:06:56 +08:00
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class CreateReplies < ActiveRecord::Migration[4.2]
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2013-02-06 03:16:51 +08:00
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def change
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create_table :post_replies, id: false do |t|
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t.references :post
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t.integer :reply_id
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2017-08-07 23:48:36 +08:00
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t.timestamps null: false
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2013-02-06 03:16:51 +08:00
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end
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add_index :post_replies, [:post_id, :reply_id], unique: true
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execute "INSERT INTO post_replies (post_id, reply_id, created_at, updated_at)
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SELECT p2.id, p.id, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP
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FROM posts AS p
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INNER JOIN posts AS p2 on p2.post_number = p.reply_to_post_number AND p2.forum_thread_id = P.forum_thread_id
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WHERE p.forum_thread_id IS NOT NULL"
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end
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end
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