simple_form_for feedback, url: rcms_feedbacks_path do |f|

.hide
  = f.input_field :feedback_type
.form-group
  = f.input_field :username, placeholder: 'имя', required: true, class: 'form-control'
.clearfix
= f.input_field :phone, placeholder: 'номер телефона', required: true, class: 'form-control'
.clearfix
button.btn.btn-primary.btn-sm.pull-right Позвоните мне