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14 lines
345 B
Ruby
14 lines
345 B
Ruby
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class AddReplyCountToPosts < ActiveRecord::Migration
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def up
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add_column :posts, :reply_count, :integer, null: false, default: 0
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execute "UPDATE posts
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SET reply_count = (SELECT count(*) FROM posts AS p2 WHERE p2.reply_to_post_number = posts.post_number)"
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end
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def down
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remove_column :posts, :reply_count
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end
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end
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