simple_form + flatpickr

simple_form.rb

  config.wrappers :flatpickr, class: 'mb-6 relative' do |b|
    b.use :html5
    b.use :label, class: 'mb-2'
    b.wrapper tag: :div, html: {
      data: {
        controller: 'flatpickr',
        wrap: true,
        alt_format: 'm/d/Y',
        flatpickr_cleave_date_pattern: %w[m d Y]
      }
    } do |component|
      component.use :input, class: 'w-full', placeholder: 'mm/dd/yyyy', data: { input: '' }
    end
  end