Огромная замена логики

templates/base.html

@@ -17,6 +17,14 @@
     {% endif %}
 
     <main class="container-fluid py-3 flex-grow-1 d-flex flex-column">
+        {% if messages %}
+            <div class="mb-3">
+                {% for message in messages %}
+                    <div class="alert {% if message.tags %}alert-{{ message.tags }}{% else %}alert-secondary{% endif %} mb-2" role="alert">{{ message }}</div>
+                {% endfor %}
+            </div>
+        {% endif %}
+
         {% block content %}{% endblock %}
     </main>