- if commentaire.sent_by_system?
  = image_tag('icons/mail.svg', class: 'person-icon', alt: '')
- elsif commentaire.sent_by?(connected_user)
  = image_tag('icons/account-circle.svg', class: 'person-icon', alt: '')
- else
  = image_tag('icons/blue-person.svg', class: 'person-icon', alt: '')