Rails Append class if condition is true in Haml

Append class if condition is true in Haml (with Rails) - Stack Overflow http://t.co/7pyL7pNn
— kinopyo (@fantasyday) November 22, 2011

.post{ :class => ('gray' unless post.published?) }

HAMLである条件がtrueの時だけあるclassをタグに追加したい場合。

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Qihuan Piao

(aka kinopyo) is Chinese based in Tokyo. Software writer. He shares stories inspired him in this blog. His infamous line - "I feel calm when I kill those monsters, or people (in game)" shocks his friends deeply.

He also writes in Japanese and Chinese.