HAML support

[bb]

I have a Rails project which is using HAML as HTML template syntax. I tried converting the contained Bootstrap CSS to Tailwind and it

TLDR about HAML: Instead of e.g. <span class="text-secondary"> the code is %span.text-secondary.
There are a few extra cases, e.g. if the tag name is div, it can be removed (e.g. <div class="d-none d-md-block"> becomes .d-none.d-md-block). IDs can also be included like h1#overview and there are quite a few more cases like attribute syntax (based on Ruby) which allows e.g. generating class names. For more, see the website.

Is there a way to get tailwindo to convert my files?
If not directly: Are there any recommendations how to proceed? E.g. there are tools to convert HAML to HTML (with ERB, which is similar to PHP in HTML and seems to work) and back... which might be included in the processing pipeline.

Furthermore (might be worth a separate issue, if the error is not on my side), the files are called e.g. application.html.haml and neither of the extensions haml, html nor html.haml found any files: tailwindo -e html,haml,html.haml while calling e.g. tailwindo application.html.haml directly works but only detects embedded HTML or SVG code.

[abdumu]

Hello,

If possible, can you provide a complete example of HAML with tailwind css?

thanks.

[bb]

Hi @abdumu,

here's an example, taken from the Tailwind UI free previews:

Original HTML:

<!-- This example requires Tailwind CSS v2.0+ -->
<div class="relative bg-white overflow-hidden">
  <div class="max-w-7xl mx-auto">
    <div class="relative z-10 pb-8 bg-white sm:pb-16 md:pb-20 lg:max-w-2xl lg:w-full lg:pb-28 xl:pb-32">
      <svg class="hidden lg:block absolute right-0 inset-y-0 h-full w-48 text-white transform translate-x-1/2" fill="currentColor" viewBox="0 0 100 100" preserveAspectRatio="none" aria-hidden="true">
        <polygon points="50,0 100,0 50,100 0,100" />
      </svg>

      <div>
        <div class="relative pt-6 px-4 sm:px-6 lg:px-8">
          <nav class="relative flex items-center justify-between sm:h-10 lg:justify-start" aria-label="Global">
            <div class="flex items-center flex-grow flex-shrink-0 lg:flex-grow-0">
              <div class="flex items-center justify-between w-full md:w-auto">
                <a href="#">
                  <span class="sr-only">Workflow</span>
                  <img class="h-8 w-auto sm:h-10" src="https://tailwindui.com/img/logos/workflow-mark-indigo-600.svg">
                </a>
                <div class="-mr-2 flex items-center md:hidden">
                  <button type="button" class="bg-white rounded-md p-2 inline-flex items-center justify-center text-gray-400 hover:text-gray-500 hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-indigo-500" aria-expanded="false">
                    <span class="sr-only">Open main menu</span>
                    <!-- Heroicon name: outline/menu -->
                    <svg class="h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16" />
                    </svg>
                  </button>
                </div>
              </div>
            </div>
            <div class="hidden md:block md:ml-10 md:pr-4 md:space-x-8">
              <a href="#" class="font-medium text-gray-500 hover:text-gray-900">Product</a>

              <a href="#" class="font-medium text-gray-500 hover:text-gray-900">Features</a>

              <a href="#" class="font-medium text-gray-500 hover:text-gray-900">Marketplace</a>

              <a href="#" class="font-medium text-gray-500 hover:text-gray-900">Company</a>

              <a href="#" class="font-medium text-indigo-600 hover:text-indigo-500">Log in</a>
            </div>
          </nav>
        </div>

        <!--
          Mobile menu, show/hide based on menu open state.

          Entering: "duration-150 ease-out"
            From: "opacity-0 scale-95"
            To: "opacity-100 scale-100"
          Leaving: "duration-100 ease-in"
            From: "opacity-100 scale-100"
            To: "opacity-0 scale-95"
        -->
        <div class="absolute z-10 top-0 inset-x-0 p-2 transition transform origin-top-right md:hidden">
          <div class="rounded-lg shadow-md bg-white ring-1 ring-black ring-opacity-5 overflow-hidden">
            <div class="px-5 pt-4 flex items-center justify-between">
              <div>
                <img class="h-8 w-auto" src="https://tailwindui.com/img/logos/workflow-mark-indigo-600.svg" alt="">
              </div>
              <div class="-mr-2">
                <button type="button" class="bg-white rounded-md p-2 inline-flex items-center justify-center text-gray-400 hover:text-gray-500 hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-indigo-500">
                  <span class="sr-only">Close main menu</span>
                  <!-- Heroicon name: outline/x -->
                  <svg class="h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
                  </svg>
                </button>
              </div>
            </div>
            <div class="px-2 pt-2 pb-3 space-y-1">
              <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">Product</a>

              <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">Features</a>

              <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">Marketplace</a>

              <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">Company</a>
            </div>
            <a href="#" class="block w-full px-5 py-3 text-center font-medium text-indigo-600 bg-gray-50 hover:bg-gray-100">
              Log in
            </a>
          </div>
        </div>
      </div>

      <main class="mt-10 mx-auto max-w-7xl px-4 sm:mt-12 sm:px-6 md:mt-16 lg:mt-20 lg:px-8 xl:mt-28">
        <div class="sm:text-center lg:text-left">
          <h1 class="text-4xl tracking-tight font-extrabold text-gray-900 sm:text-5xl md:text-6xl">
            <span class="block xl:inline">Data to enrich your</span>
            <span class="block text-indigo-600 xl:inline">online business</span>
          </h1>
          <p class="mt-3 text-base text-gray-500 sm:mt-5 sm:text-lg sm:max-w-xl sm:mx-auto md:mt-5 md:text-xl lg:mx-0">
            Anim aute id magna aliqua ad ad non deserunt sunt. Qui irure qui lorem cupidatat commodo. Elit sunt amet fugiat veniam occaecat fugiat aliqua.
          </p>
          <div class="mt-5 sm:mt-8 sm:flex sm:justify-center lg:justify-start">
            <div class="rounded-md shadow">
              <a href="#" class="w-full flex items-center justify-center px-8 py-3 border border-transparent text-base font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700 md:py-4 md:text-lg md:px-10">
                Get started
              </a>
            </div>
            <div class="mt-3 sm:mt-0 sm:ml-3">
              <a href="#" class="w-full flex items-center justify-center px-8 py-3 border border-transparent text-base font-medium rounded-md text-indigo-700 bg-indigo-100 hover:bg-indigo-200 md:py-4 md:text-lg md:px-10">
                Live demo
              </a>
            </div>
          </div>
        </div>
      </main>
    </div>
  </div>
  <div class="lg:absolute lg:inset-y-0 lg:right-0 lg:w-1/2">
    <img class="h-56 w-full object-cover sm:h-72 md:h-96 lg:w-full lg:h-full" src="https://images.unsplash.com/photo-1551434678-e076c223a692?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2850&q=80" alt="">
  </div>
</div>

converted to HAML it looks like this:

/ This example requires Tailwind CSS v2.0+
.relative.bg-white.overflow-hidden
  .max-w-7xl.mx-auto
    .relative.z-10.pb-8.bg-white.sm:pb-16.md:pb-20.lg:max-w-2xl.lg:w-full.lg:pb-28.xl:pb-32
      %svg.hidden.lg:block.absolute.right-0.inset-y-0.h-full.w-48.text-white.transform{"aria-hidden" => "true", :class => "translate-x-1/2", :fill => "currentColor", :preserveaspectratio => "none", :viewbox => "0 0 100 100"}
        %polygon{:points => "50,0 100,0 50,100 0,100"}
      %div
        .relative.pt-6.px-4.sm:px-6.lg:px-8
          %nav.relative.flex.items-center.justify-between.sm:h-10.lg:justify-start{"aria-label" => "Global"}
            .flex.items-center.flex-grow.flex-shrink-0.lg:flex-grow-0
              .flex.items-center.justify-between.w-full.md:w-auto
                %a{:href => "#"}
                  %span.sr-only Workflow
                  %img.h-8.w-auto.sm:h-10{:src => "https://tailwindui.com/img/logos/workflow-mark-indigo-600.svg"}/
                .-mr-2.flex.items-center.md:hidden
                  %button.bg-white.rounded-md.p-2.inline-flex.items-center.justify-center.text-gray-400.hover:text-gray-500.hover:bg-gray-100.focus:outline-none.focus:ring-2.focus:ring-inset.focus:ring-indigo-500{"aria-expanded" => "false", :type => "button"}
                    %span.sr-only Open main menu
                    / Heroicon name: outline/menu
                    %svg.h-6.w-6{"aria-hidden" => "true", :fill => "none", :stroke => "currentColor", :viewbox => "0 0 24 24", :xmlns => "http://www.w3.org/2000/svg"}
                      %path{:d => "M4 6h16M4 12h16M4 18h16", "stroke-linecap" => "round", "stroke-linejoin" => "round", "stroke-width" => "2"}
            .hidden.md:block.md:ml-10.md:pr-4.md:space-x-8
              %a.font-medium.text-gray-500.hover:text-gray-900{:href => "#"} Product
              %a.font-medium.text-gray-500.hover:text-gray-900{:href => "#"} Features
              %a.font-medium.text-gray-500.hover:text-gray-900{:href => "#"} Marketplace
              %a.font-medium.text-gray-500.hover:text-gray-900{:href => "#"} Company
              %a.font-medium.text-indigo-600.hover:text-indigo-500{:href => "#"} Log in
        /
          Mobile menu, show/hide based on menu open state.
          
          Entering: "duration-150 ease-out"
          From: "opacity-0 scale-95"
          To: "opacity-100 scale-100"
          Leaving: "duration-100 ease-in"
          From: "opacity-100 scale-100"
          To: "opacity-0 scale-95"
        .absolute.z-10.top-0.inset-x-0.p-2.transition.transform.origin-top-right.md:hidden
          .rounded-lg.shadow-md.bg-white.ring-1.ring-black.ring-opacity-5.overflow-hidden
            .px-5.pt-4.flex.items-center.justify-between
              %div
                %img.h-8.w-auto{:alt => "", :src => "https://tailwindui.com/img/logos/workflow-mark-indigo-600.svg"}/
              .-mr-2
                %button.bg-white.rounded-md.p-2.inline-flex.items-center.justify-center.text-gray-400.hover:text-gray-500.hover:bg-gray-100.focus:outline-none.focus:ring-2.focus:ring-inset.focus:ring-indigo-500{:type => "button"}
                  %span.sr-only Close main menu
                  / Heroicon name: outline/x
                  %svg.h-6.w-6{"aria-hidden" => "true", :fill => "none", :stroke => "currentColor", :viewbox => "0 0 24 24", :xmlns => "http://www.w3.org/2000/svg"}
                    %path{:d => "M6 18L18 6M6 6l12 12", "stroke-linecap" => "round", "stroke-linejoin" => "round", "stroke-width" => "2"}
            .px-2.pt-2.pb-3.space-y-1
              %a.block.px-3.py-2.rounded-md.text-base.font-medium.text-gray-700.hover:text-gray-900.hover:bg-gray-50{:href => "#"} Product
              %a.block.px-3.py-2.rounded-md.text-base.font-medium.text-gray-700.hover:text-gray-900.hover:bg-gray-50{:href => "#"} Features
              %a.block.px-3.py-2.rounded-md.text-base.font-medium.text-gray-700.hover:text-gray-900.hover:bg-gray-50{:href => "#"} Marketplace
              %a.block.px-3.py-2.rounded-md.text-base.font-medium.text-gray-700.hover:text-gray-900.hover:bg-gray-50{:href => "#"} Company
            %a.block.w-full.px-5.py-3.text-center.font-medium.text-indigo-600.bg-gray-50.hover:bg-gray-100{:href => "#"}
              Log in
      %main.mt-10.mx-auto.max-w-7xl.px-4.sm:mt-12.sm:px-6.md:mt-16.lg:mt-20.lg:px-8.xl:mt-28
        .sm:text-center.lg:text-left
          %h1.text-4xl.tracking-tight.font-extrabold.text-gray-900.sm:text-5xl.md:text-6xl
            %span.block.xl:inline Data to enrich your
            %span.block.text-indigo-600.xl:inline online business
          %p.mt-3.text-base.text-gray-500.sm:mt-5.sm:text-lg.sm:max-w-xl.sm:mx-auto.md:mt-5.md:text-xl.lg:mx-0
            Anim aute id magna aliqua ad ad non deserunt sunt. Qui irure qui lorem cupidatat commodo. Elit sunt amet fugiat veniam occaecat fugiat aliqua.
          .mt-5.sm:mt-8.sm:flex.sm:justify-center.lg:justify-start
            .rounded-md.shadow
              %a.w-full.flex.items-center.justify-center.px-8.py-3.border.border-transparent.text-base.font-medium.rounded-md.text-white.bg-indigo-600.hover:bg-indigo-700.md:py-4.md:text-lg.md:px-10{:href => "#"}
                Get started
            .mt-3.sm:mt-0.sm:ml-3
              %a.w-full.flex.items-center.justify-center.px-8.py-3.border.border-transparent.text-base.font-medium.rounded-md.text-indigo-700.bg-indigo-100.hover:bg-indigo-200.md:py-4.md:text-lg.md:px-10{:href => "#"}
                Live demo
  .lg:absolute.lg:inset-y-0.lg:right-0{:class => "lg:w-1/2"}
    %img.h-56.w-full.object-cover.sm:h-72.md:h-96.lg:w-full.lg:h-full{:alt => "", :src => "https://images.unsplash.com/photo-1551434678-e076c223a692?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2850&q=80"}/

You can easily convert any HTML (without embedded code) to HAML using this tool: https://html2haml.herokuapp.com/ if you need more examples.