Add htmlTagAttributes filter to Twig

[timkelty]

…because yii\helpers\BaseHtml::renderTagAttributes is awesome!

Back in the day I wrote a Craft 2 plugin for this: https://github.com/timkelty/htmlattributes-craft

Now that it can be added to Craft with a couple lines of code, seems like a big win.

Example usage:

{% set attributes = {
      class: ['one', 'two'],
      disabled: true,
      readonly: false,
      data: {
        baz: 'Escape this "',
        qux: {
          some: ['data', '"quoted"']
        }
      },
      style: {
        'background-color': 'red',
        'font-size': '20px'
      },
} %}

<div {{ attributes|htmlTagAttributes }}></div>

[brandonkelly]

Couple things:

• The PR should target the 3.2 branch instead of develop.
• It should probably be a Twig function rather than filter, since it’s not really modifying the array, as much as generating something completely new using the array for configuration.
• It should probably just be called attr().

[timkelty]

All set, @brandonkelly!

• The PR should target the 3.2 branch instead of develop.
• It should probably be a Twig function rather than filter, since it’s not really modifying the array, as much as generating something completely new using the array for configuration.
• It should probably just be called attr().

[brandonkelly]

Looks great, thanks!