anchor.diff:                  <td>${ad.title}</td>
                   <td>${ad.price}</td>
                   <td>${ad.description}</td>
  -                <td>${ad.buyable}</td>
                   <td>${ad.availableAt}</td>
                   <td>${ad.buyer.lname}</td>
                   <td>${ad.seller.lname}</td>
                   <td>${ad.footballer.lname}</td>
  +                <td><c:choose>
  +                <c:when test="${user.id == ad.seller.id}">C'est votre offre</c:when>
  +                <c:when test="${!empty ad.buyer}">Cette offre a déjà été vendue</c:when>
  +                <c:otherwise>
  +                <a href="${pageContext.request.contextPath}/ads/buy?id=${ad.id}" class="waves-effect waves-light btn">Acheter</a></c:choose></td>
                   <td><a href="${pageContext.request.contextPath}/ads/modify?id=${ad.id}" class="waves-effect waves-light btn">Modifier</a></td>
                   <td><a href="${pageContext.request.contextPath}/ads/delete?id=${ad.id}" class="waves-effect waves-light btn">Supprimer</a></td>
                 </tr>
  
positive.code:               <th>Titre</th>
                <th>Prix</th>
                <th>Description</th>
                <th>Achetable</th>
                <th>Date dispo</th>
                <th>Nom Acheteur</th>
                <th>Nom Vendeur</th>
                <th>Nom Joueur</th>
                <th>Modifier</th>
                <th>Supprimer</th>
              </tr>
  
negative.code:       </div>
      </div>
    </div>
  </layout:authent>
  