expenses_manager/expenses/templates/expenses/tag_list.html

@@ -5,15 +5,34 @@
 
     <a class="btn" href="{% url 'tag_create' %}">➕ Nueva etiqueta</a>
 
-    <ul>
-        {% for tag in tags %}
-            <li class="table-actions">
-                {{ tag.name }}
-                <a href="{% url 'tag_edit' tag.id %}">Editar</a>
-                <a href="{% url 'tag_delete' tag.id %}" class="danger">Eliminar</a>
-            </li>
-        {% empty %}
-            <li>No hay etiquetas</li>
-        {% endfor %}
-    </ul>
-{% endblock %}
+    <div class="table-wrap">
+    <table>
+        <thead>
+            <tr>
+                <th>Nombre</th>
+                <th>Gastos</th>
+                <th></th>
+            </tr>
+        </thead>
+        <tbody>
+            {% for tag in tags %}
+                <tr>
+                    <td>{{ tag.name }}</td>
+                    <td>{{ tag.expense_count }}</td>
+                    <td class="table-actions">
+                        <a href="{% url 'tag_edit' tag.id %}">Editar</a>
+                        <a href="{% url 'tag_delete' tag.id %}" class="danger">Eliminar</a>
+                    </td>
+                </tr>
+            {% empty %}
+            <tr>
+                <td colspan="3" class="empty-state">
+                    <p>No hay etiquetas</p>
+                    <a href="{% url 'tag_create' %}">Añade la primera</a>
+                </td>
+            </tr>
+            {% endfor %}
+        </tbody>
+    </table>
+    </div>
+{% endblock %}

expenses_manager/expenses/tests/test_tags.py

@@ -0,0 +1,23 @@
+import pytest
+from datetime import date
+from decimal import Decimal
+from django.urls import reverse
+from expenses.models import Expense, Tag
+
+pytestmark = pytest.mark.django_db
+
+
+def test_tag_list_annotates_expense_usage_count(auth_client, user, account, category):
+    used = Tag.objects.create(owner=user, name="Usada")
+    unused = Tag.objects.create(owner=user, name="Sin usar")
+
+    for _ in range(2):
+        expense = Expense.objects.create(
+            owner=user, account=account, category=category, amount=Decimal("10"), date=date.today()
+        )
+        expense.tags.add(used)
+
+    response = auth_client.get(reverse('tag_list'))
+
+    counts = {tag.name: tag.expense_count for tag in response.context["tags"]}
+    assert counts == {"Usada": 2, "Sin usar": 0}

expenses_manager/expenses/views.py

@@ -15,7 +15,7 @@ from .forms import (
 )
 
 from django.core.paginator import Paginator
-from django.db.models import Sum, ProtectedError
+from django.db.models import Sum, Count, ProtectedError
 from django.db.models.functions import ExtractMonth, ExtractYear, ExtractDay
 
 from django.contrib.auth.decorators import login_required
@@ -635,7 +635,11 @@ def dashboard(request):
 
 @login_required
 def tag_list(request):
-    tags = Tag.objects.filter(owner=request.user)
+    tags = (
+        Tag.objects.filter(owner=request.user)
+        .annotate(expense_count=Count("expenses"))
+        .order_by("name")
+    )
 
     return render(
         request, "expenses/tag_list.html", {"active_menu": "settings", "tags": tags}