= render partial: 'shared/dossiers/editable_champs/etablissement_titre', locals: { etablissement: etablissement }
- champ_attributes = etablissement.champ.private? ? 'champs_private_attributes' : 'champs_attributes'
= fields_for "dossier[#{champ_attributes}][#{position}][etablissement_attributes]", etablissement do |form|
  = render partial: 'shared/dossiers/editable_champs/etablissement', locals: { form: form, signature: etablissement.sign }