= form_for ([@organization, @service, service_version]) do |f|
  - if service_version.errors.any?
    #error_explanation
      %h2
        = pluralize(service_version.errors.count, "error")
        prohibited this service_version from being saved:
      %ul
        - service_version.errors.full_messages.each do |message|
          %li= message
  .field
    = f.label @service.name
  .field
    = f.label @service.organization.name
  .field
    = f.label :spec_file
    = f.file_field :spec_file
  .field
    = f.label :backwards_compatible
    = f.check_box :backwards_compatible
  .actions
    = f.submit

= form_for ([@organization, @service, service_version]) do |f|
  - if service_version.errors.any?
    #error_explanation
      %h2
        = pluralize(service_version.errors.count, "error")
        prohibited this service_version from being saved:
      %ul
        - service_version.errors.full_messages.each do |message|
          %li= message
  .field
    = f.label @service.name
  .field
    = f.label @service.organization.name
  .field
    = f.label :spec_file
    = f.file_field :spec_file
  .field
    = f.hidden_field :backwards_compatible, value: true
  .actions
    = f.submit

Convert BackwardCompatible into hidden field
Convert BackwardCompatible into hidden field
