How do I comment out ERB in Rails?

Question

I understand that commenting in rails is done with '#' but if I try to comment out ERB tags, I always run into problems

 <%= link_to "Make default", make_default_admin_state_path(state) %>

Where would you put the '#' on this code?

I tried to put it outside the <% and it did nothing. when I put it inside, there was an error message

Dave Newton · Accepted Answer · 2012-11-02T02:19:51.110

60

<%#= link_to "Make default", make_default_admin_state_path(state) %>

<%# %> is an ERB comment: the dangling = makes no difference, and can be left in.

edited Nov 02 '12 at 02:19

answered Dec 15 '11 at 04:01

Dave Newton

Breno Salgado · Answer 2 · 2013-01-21T16:10:00.247

17

Just now I wanted to just leave a block out of the template because it was currently useless, if that's the case I suggest:

<% if false %>
  this block of code won't give runtime errors..
  <%= alm lkjsxajklla 10293 aslkj no problems! %>
<% end %>

edited Jan 21 '13 at 16:10

answered May 01 '12 at 22:29

Breno Salgado

4

This is what I use to comment out ERB. I usually add something to make the commented block stand out because this screws up the text highlighting. I like the `if false` approach because it doesn't get screwed up when there is `<% %>` inside. I usually un-indent `if false` and `end` completely and add something after. Something like: `<% if false #-----\/----\/----\/---- %> \n..\n.. <%= ..... %>\n <% end #____/\____/\____/\____%>`. This makes the comment area obvious. – DutGRIFF May 04 '14 at 21:25

score 1 · Answer 3 · answered Dec 15 '11 at 04:01

1

<!-- %= link_to "Make default", make_default_admin_state_path(state) % -->

answered Dec 15 '11 at 04:01

Dominic Goulet

4

That'll still show up in the HTML, which may or may not be an issue. (Heck, it might even be desired.) – Dave Newton Dec 15 '11 at 04:04
Yeah but had already answered with the erb comment, decided to put the html one ;-) – Dominic Goulet Dec 15 '11 at 13:44

score -1 · Answer 4 · answered Dec 15 '11 at 09:36

-1

you can do it like one the @Dominic Goet did.If you stuck from it you can try this one

<%=# link_to "Make default", make_default_admin_state_path(state) % >

or

< %#= link_to "Make default", make_default_admin_state_path(state) %>

answered Dec 15 '11 at 09:36

Ravindra

4 Answers4