Ruby China

新手问题 取数据

rubyway · September 24, 2012 · Last by rubyway replied at September 24, 2012 · 1884 hits

rails 取出当前文章的上一篇和下一篇文章怎么做？

1 likes
huacnlee #1 September 24, 2012

你需要 SQL 查询

select * from posts where id > 100  limit 1

select * from posts where id < 100 limit 1

ActiveRecord 里面

Post.where("id > 100").limit(1).first
Post.where("id < 100").limit(1).first
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