Best way to handle data attributes in Slim

Question

I was evaluating Slim as a replacement for HAML in a personal project, and it doesn't appear to handle HTML5 data attributes as gracefully as HAML. I was hoping someone may have also run into this, or may have known about an option/syntax I haven't yet found in their docs.

HAML allows you to define HTML 5 data attributes simply by using nested hashes like so:

%a{data: {key1: 'val', key2: 'val'}}

resulting in

<a data-key1='val' data-key2='val'></a>

Selfregulated

Answer 1

There are multiple ways in Slim

1. As Hash

   Attributes which will be hyphenated if a Hash is given (e.g. data={a:1,b:2} will render as data-a="1" data-b="2")

2. Use it directly as "mu is too short" mentioned, quite intuitive.

   a data-title="help" data-content="foo"
   

3. Use Ruby code. I often do this and rarely above.

   = link_to 'foo', bar_path, data: {a: 'a', b: 'b'}
   

Gangboard

Awesome, #3 is exactly what I was looking for. I didn't see anything jump out at the docs describing this the way the HAML docs did. Thanks! – Selfregulated

moss, #3 is neither Haml nor Slim but Rails helper :) – Gangboard

Note if you do a href="#" data={user_name: 'fred', user_id: 1} it will translate this to <a href="#" data-user-name="fred" data-user-id="1"></a> - this is nothing to do with Rails as you'll see it working in Sinatra apps as well. – Spermiogenesis

Note that #3 doesn't work for direct div elements like .container, data: { url: "link", value: "stuff" } Instead you have to use #2, like .container[ data-url="link data-value="stuff" ] – Bello

Just to mention it: Slim is truly beautiful. – Testosterone

in case you want to separate to multiple lines use: div(data-a="asdf" <you can insert a line break here>data-b="qwer") – Sable

Underscores in a key are not replaced by hyphens since Slim 4.0 (e.g. data: {user_id: 1} is converted to data-user_id="1") – Fidler

Answer 2

Use the splat operator:

h1#section-title*{'data-url'=>'test', 'data-id'=>'test'} = @project.name

Thithia

Answer 3

.your-class*{data: {first_attribute: 'first value', second_attribute: 'second value'} }

Will produce

<div class="your-class" data-first_attribute="first value" data-second_attribute="second value"></div>

Broadloom

Answer 4

I prefer this kind to fix...

@products.each do |product|
  .module data-id=product.id

It is working for me

Desist