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finish tag name uniqueness migration

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This commit is contained in:
Raphael Sofaer 2011-04-06 15:08:10 -07:00
parent d825463472
commit 9e05f3196c
1 changed files with 6 additions and 2 deletions
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8
db/migrate/20110406203720_tag_name_uniqueness.rb
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@ -17,11 +17,15 @@ SQL
tag_ids = execute("SELECT tags.id FROM tags WHERE tags.name = '#{name}'").to_a.flatten!
id_to_keep = tag_ids.pop
execute <<SQL
UPDATE taggings
UPDATE IGNORE taggings
SET taggings.tag_id = #{id_to_keep}
WHERE taggings.tag_id IN (#{tag_ids.join(',')})
SQL
execute("DELETE tags WHERE tags.id IN (#{tag_ids.join(',')})")
execute <<SQL
DELETE FROM taggings WHERE taggings.tag_id IN (#{tag_ids.join(',')})
SQL
execute("DELETE FROM tags WHERE tags.id IN (#{tag_ids.join(',')})")
end
end