app/views/meta/formats/new.html.haml
= bootstrap_form_for @format, as: :format_,
url: { controller: 'meta/formats', action: 'create' } do |f|
= render 'format_form', f: f
.d-flex.justify-content-end
= link_to 'Cancel', meta_formats_path, class: 'btn btn-link mr-2'
= f.submit 'Create'