inconsistent behaviour rendering booleans as data attribute values

[cromega]

Hi,

irb(main):012:0> puts Slim::Template.new { '.test data={false: false, true: true}' }.render
<div class="test" data-false="false" data-true=""></div>

Wondering if it's somehow related to rendering certain value-less attributes (eg: readonly, checked). The obvious workaround is stringifying values before passing them to the data hash but I think this behaviour is a trap.

[chriscz]

Looks like the issue might be on one of these lines but I'm not entirely sure

• slim/lib/slim/splat/builder.rb

  Line 77 in 39cc3fb

  if v == true

• slim/lib/slim/code_attributes.rb

  Line 24 in 39cc3fb

  when 'true'

[minad]

Slim behaves as expected here, since boolean values get special treatment. We could add an option to Slim::Splat::Filter in order to opt out, such that splat values are simply printed in stringified form.