ERB block comments in RHTML templates using Ruby on Rails
May 2nd, 2008
This blog is simply a reminder to myself more than anything else.
After searching the great Googs and reading here, here, and here about commenting out regions in your RHTML templates, I couldn’t find a (good) solution aside from the (<... if false ...>) paradigm. Using Rails 1.2.3 (I know, I know… we’re old school), to get block comments in Rails, the following worked for me, but unfortunately, still wasn’t recognized by NetBeans 6.0 (Boo!).
1 2 3 4 5 6 7 8 9 10 11 12 13 | <table>
...
<tbody>
<tr id="<%= "photographer_#{photographer.id}"%>">
<td><%
=begin %>
<%= h photographer.first_name unless photographer.blank? %><%
=end %>
</td>
</tr>
</tbody>
...
</table> |
Happy Coding!
Popularity: 49% [?]
October 1st, 2008 at 12:05 am
[...] <melvinram> nat2610: http://blog.localkinegrinds.com/2008/05/02/erb-block-comments-in-rhtml-templates-using-ruby-on-rails... [...]
January 3rd, 2009 at 11:38 am
Just struggled with this after upgrading to Ruby 1.8.7 and Rails 2.2.2.
Here is a relevant portion from the inline documentation for ERB:
| ERB recognizes certain tags in the provided template and converts them based on the rules below:
|
|
|
|
| % a line of Ruby code — treated as (optional — see ERB.new)
| %% replaced with % if first thing on a line and % processing is used
| — replace with respectively
So, contrary to some suggestions (http://www.ruby-forum.com/topic/154835#693739), comments ARE allowed in ERB, but it seems to be safe only to do so when the whole embedded expression is a comment, i.e.:
If your ‘bad comments’ are consistent in their usage of whitespace around the hash mark, then it ought to be easy to do a grep search-and-replace to change all your bad comments to look like this, which WILL work in Ruby 1.8.7:
April 20th, 2009 at 5:51 am
[...] <melvinram> nat2610: http://blog.localkinegrinds.com/2008/05/02/erb-block-comments-in-rhtml-templates-using-ruby-on-rails... [...]
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