Add hashtag search functionality and create hashtag page template

innovedus_cms/home/templates/home/article_page.html

@@ -19,7 +19,7 @@
           <span>Hashtags:</span>
           <ul>
             {% for tag in tags %}
-              <li>#{{ tag }}</li>
+              <li><a href="{% url 'hashtag_search' tag.slug %}">#{{ tag }}</a></li>
             {% endfor %}
           </ul>
         </div>

innovedus_cms/home/templates/home/hashtag_page.html

@@ -0,0 +1,19 @@
+{% extends "base.html" %}
+{% load wagtailcore_tags %}
+{% block content %}
+  <nav class="breadcrumbs" aria-label="breadcrumb">
+    <ol>
+      <li>
+        {% if site_root %}
+          <a href="{{ site_root.url }}">首頁</a>
+        {% else %}
+          <a href="/">首頁</a>
+        {% endif %}
+      </li>
+      <li><span>標籤</span></li>
+      <li><span>#{{ tag.name }}</span></li>
+    </ol>
+  </nav>
+
+  {% include "home/includes/page-article-list.html" %}
+{% endblock %}

innovedus_cms/home/views.py

@@ -0,0 +1,43 @@
+from django.core.paginator import EmptyPage, PageNotAnInteger, Paginator
+from django.shortcuts import get_object_or_404, render
+
+from taggit.models import Tag
+from wagtail.models import Site
+
+from .models import ArticlePage, PAGE_SIZE
+
+
+def hashtag_search(request, slug):
+    tag = get_object_or_404(Tag, slug=slug)
+    articles = (
+        ArticlePage.objects.live()
+        .filter(tags__slug=slug)
+        .order_by("-date")
+    )
+
+    paginator = Paginator(articles, PAGE_SIZE)
+    page_number = request.GET.get("page")
+
+    try:
+        page_obj = paginator.page(page_number)
+    except PageNotAnInteger:
+        page_obj = paginator.page(1)
+    except EmptyPage:
+        page_obj = paginator.page(paginator.num_pages)
+
+    site = Site.find_for_request(request)
+    site_root = site.root_page if site else None
+
+    context = {
+        "tag": tag,
+        "category_sections": [
+            {
+                "title": f"#{tag.name}",
+                "items": page_obj,
+                "url": request.path,
+            }
+        ],
+        "site_root": site_root,
+    }
+
+    return render(request, "home/hashtag_page.html", context)

innovedus_cms/mysite/urls.py

@@ -7,11 +7,14 @@ from wagtail import urls as wagtail_urls
 from wagtail.documents import urls as wagtaildocs_urls
 
 from search import views as search_views
+from home import views as home_views
 
 urlpatterns = [
     path("django-admin/", admin.site.urls),
     path("admin/", include(wagtailadmin_urls)),
     path("documents/", include(wagtaildocs_urls)),
+    # use <str:slug> so Unicode tag slugs (e.g. 台北美食) still resolve
+    path("tags/<str:slug>/", home_views.hashtag_search, name="hashtag_search"),
     path("search/", search_views.search, name="search"),
 ]