Ruby on Rails：meta_tags gem

Question

I use the meta_tags gems to handle all the SEO meta tags.

However, when I use in my application.html.haml view, it's showing on the page itself so that the user sees it as well.

= set_meta_tags title: "app title, keywords...."

Any idea why that happens?

Answer 1

This is a behaviour of HAML rather than the meta_tags gem.

-# In a HAML file, ...
= '= will evaluate the ruby code and put the result on the page'
- '- will evaluate the ruby code but not put the result on the page'

Reference: http://haml.info/docs/yardoc/file.REFERENCE.html#ruby_evaluation