Block comments in html.erb templates in rails
Use this for commenting single lines:
<%# your_ruby_code %>For multiple lines, the
<% =begin %> <% ruby_code %><% =end %>What you said would work.
I wouldn't count as a solution, but perhaps enclosing the chunk between an
<% if false %> ...<% end %>or if you feel a little dirty, create a helper that simply outputs nothing.
I've never needed it, but I'm stumbled there seems to be no out-of-the-box solution for this.
The =begin approach is annoying because:
- It doesn't work for mixed HTML and Ruby (or just HTML) that's on a single line
- It's annoying to type
The <% if false %> approach works, but it looks weird and doesn't give anyone else who looks at your code a hint about your intentions.
My solution is as follows:
In application_helper.rb, add a method so:
def commentendThen in your view template, you can say:
<% comment do %>Some stuff that won't be rendered...<% end %>This works because any Ruby method can take a block, but will silently ignore the passed-in block if your method doesn't include a yield.