Rails 3 / HAML: How can I output haml raw from a variable?

问题

I have some variables within rails that contain some divs like so:

@layout_1 = "
.box_1 
.column_4 <br>
.gutter<br>
.column_4<br>
.gutter<br>
.column_4<br>
.gutter<br>
.column_4<br>"

This is coming from a database, and the idea is to swap layouts on request, but how can I output the variable (@layout_1) as HAML inside a HAML file ?

If I were to use normal html divs, I would use <%=raw or .html_safe

回答1:

you would do the same with HAML as well in your .html.haml view file.

= raw @layout_1

or

= @layout_1.html_safe

回答2:

Not entirely sure this works, but give it a try:

- output = Haml::Engine.new(@layout1).render
!= output

来源：https://stackoverflow.com/questions/8567841/rails-3-haml-how-can-i-output-haml-raw-from-a-variable