Question

I have a html.erb file where I have html code. I inserted this piece of ruby code

<li <%= puts "class='active'" %>>Link</li>

But when I run the code on rails server, class="active" is not rendered. Why is that and how do I fix it? Am I missing something basic and fundamental?

Answer 1

Don’t use puts. Use this:

<li <%= "class='active'" %>>Link</li>

puts prints a string to stdout and returns nil. That’s why your class is not rendered.

Update

To avoid escaping, prefix the string with raw

<li <%= raw "class='active'" %>>Link</li>

Or, if this is really what your code is (no simplification etc), you can just do

<li class='active'>Link</li>