Re: Interpolating underscore.js template with HAML

[Les Nightingill]

The delimiters for haml (erb) collide with the delimiters for the underscore templates...

best way I've found is to change the underscore template settings to the mustache delimiters {{ and }}

from the underscore.js docs:

_.templateSettings = {
  interpolate : /\{\{(.+?)\}\}/g
};

On Thursday, August 16, 2012 10:31:31 AM UTC-7, Ritesh Nadhani wrote:

So for my new project we are trying to use HAML/backbone.js/underscore.js templates. After reading the docs, I could figure out something like this:

    %script#album-row{ :type => 'text/template' }

      .album-row

        %a{ :href => '<%= href %>'}

          <%= name %>

While templating, "name" is correctly interpolated but I cannot get "href" to work.

Any thoughts?

[Matt Wildig]

I’m guessing your problem is that the href attribute value is being escaped:

%a{ :href => '<%= href %>'}

is becoming

<a href='&lt;%= href %&gt;'>

If so, you can use the :escape_attrs option to not escape attribute values.

A complete example:

require 'haml'

puts Haml::Engine.new(DATA.read, :escape_attrs => false).render

__END__

%script#album-row{ :type => 'text/template' }
.album-row
%a{ :href => '<%= href %>'}
<%= name %>

This should produce

<a href='<%= href %>'>

for the line in question.

Note this setting applies to all attributes in your document, you can’t currently selectively escape only some attributes.
If that’s a problem you could try changing the inderscore template deliminator as Les suggests (I haven’t actually used underscore).


Matt

[Ritesh Nadhani]

Thanks. That works for me.

Now my templates are much saner.

[Duncan Beevers]

I'm a big fan of jamesotron hamlbars https://github.com/jamesotron/hamlbars

The most basic thing the gem provides is a helper method for
generating expressions that will later hold interpolated values. The
helper method also accepts blocks, and automatically generates
appropriate opening/closing tags in the template source.

The gem is focused on generating templates that can be consumed and
processed by Handlebars/EmberJS so they're not exactly
underscore-compatible, so that may make this a non-starter for you,
but its an elegant way to deal with with difficulty of generating
closing tags in a template language that eschews them.

On Mon, Oct 15, 2012 at 5:51 PM, Bryan Li <b...@bry.li> wrote:
> This works great for getting the values off an variable. Would it work for
> if/else statements though? How do I translate the following?
>
> <% if (boolean) { %>
> <div>Blah blah</div>
> <% } %>

>
>
> On Monday, August 20, 2012 10:34:46 AM UTC-7, Les Nightingill wrote:
>>

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