add if statement in navbar

Author: shahriaarrr

config/blog/templates/blog/nav.html

@@ -11,10 +11,19 @@
         </li>
       </ul>
       <ul class="navbar-nav">
-        <li class="nav-item">
-            <a class="nav-link" aria-current="page" href="#">Sign out</a>
-        </li>
+          {% if request.user.is_authenticated %}
+            <li class="nav-item">
+                <a class="nav-link" aria-current="page" href="{% url 'logout' %}">Logout</a>
+            </li>
+         {% else %}
+              <li class="nav-item">
+                <a class="nav-link" aria-current="page" href="{% url 'login' %}">Login</a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" aria-current="page" href="{% url 'register' %}">Sign Up</a>
+              </li>
+          {% endif %}
       </ul>
     </div>
   </div>
-</nav>
+</nav>