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16 lines
497 B
Ruby
16 lines
497 B
Ruby
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class AddPublicVersionToPosts < ActiveRecord::Migration
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def up
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add_column :posts, :public_version, :integer, null: false, default: 1
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execute <<-SQL
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UPDATE posts
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SET public_version = 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')
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WHERE public_version <> 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')
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SQL
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end
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def down
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remove_column :posts, :public_version
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end
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end
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