Question

I have a relatively simple question. I have a line of code like this:

content_tag(:span, some_variable, { :class => span_class })

but if the variable span_class is nil, this outputs <span class>some_variable</span>.

I want the hash to only occur under some condition. Is there a way to do something like this:

content_tag(:span, some_variable, { :class => span_class } if some_condition)

Thanks.

Answer 1

I’m surprised that it’s doing what you say, I would expect:

content_tag :span, some_variable, :class => span_class

to not return a class if span_class is nil. However, I think you could get back to valid markup by just passing ||'', like so:

content_tag( :span, some_variable, :class => span_class||'' )