How to comment code in Rails views?
<% code code # comment %>
USED to work but I think that was accidental.
You were always supposed to put comments in separate comment tags <%# comment %>
Note NO SPACE before the pound.
Now the old loophole is closed (I forget whether 'now' means Ruby 1.8 or Rails 3 or what) so that:
<% code code # this runs too %>
<% # also runs %>
<%# the only way to comment out %>
I use this all the time
<%# This is a comment %>
The reason Ruby code would be executed inside <!-- -->
HTML comments is because all of the server side code (ie. Ruby) is interpreted first, and then the output is sent to the client, at which point the browser interprets <!-- -->
as a comment. As the other answers said, use <% #comment %>
to comment within a Rails view.