feat: pagination

src/core/views.py

@@ -1,5 +1,6 @@
 from django.shortcuts import render
 from django.http import HttpRequest, HttpResponse, FileResponse, HttpResponseBadRequest
+from django.core.paginator import Paginator
 
 from epub2go.convert import get_all_books, Book, allbooks_url
 
@@ -34,16 +35,26 @@ def index(request: HttpRequest):
     elif searchParam:
         localbooks = [book for book in books if searchParam in book.title]
 
-    # return base view
-    # TODO pagination
+    # paginate items
+    paginationParam = request.GET.get('p', '')
+    try:
+        pageNo = int(paginationParam)
+    except ValueError:
+        logger.error('Failed to cast %s to int', paginationParam)
+        pageNo = 1
+
+    pages = Paginator(localbooks, 100)
+    if pageNo < 1 or pageNo > pages.num_pages:
+        pageNo = 1
+    page = pages.page(pageNo)
     context = {
         'title': 'epub2go',
         'http_host': f'http://{ request.META['HTTP_HOST'] }',
-        'books': localbooks,
-        'books_count': len(localbooks),
+        'page': page,
         'allbooks_count': len(books),
         'allbooks_url': allbooks_url,
     }
+    # return base view
     return render(request, 'home.html', context)
 
 def validateUrl(param)->bool :

src/epub2go_web/static/styles.css

@@ -18,6 +18,8 @@ body{
     font-size:18px;
     color:var(--fg);
     padding:0 .2em;
+    text-align: center;
+    justify-content: center;
 }
 
 h1,h2,h3{
@@ -85,3 +87,6 @@ a:hover, a:any-link{
     height: 100%;
     padding: 1px;
 }
+.pagination a{
+    padding-left: 2em;
+}

src/epub2go_web/templates/home.html

@@ -16,7 +16,7 @@
             <img src="{% static 'github.svg' %}" alt="GitHub" class="header-icon">
         </a>
     </div>
-    <!-- NOTE use dl here?-->
+    <small>{{ page.paginator.count }} Ergebnisse gefunden:</small>
     <table id="table">
         <thead>
             <tr>
@@ -26,7 +26,7 @@
             </tr>
         </thead>
         <tbody>
-        {% for item in books %} 
+        {% for item in page.object_list %} 
             <tr class="table-entry">
             <td>
                 <a href= {{ item.url }} target="_blank" rel="noopener noreferrer" class="table-link">
@@ -45,6 +45,17 @@
         {% endfor %} 
         </tbody>
     </table>
-    <small>{{ books_count }} Ergebnisse gefunden</small>
+    {% if page.has_other_pages %}
+    <div class="pagination">
+        {% if page.has_previous %}
+            <a href="?p=1"> &lt;&lt; </a>
+            <a href="?p={{ page.previous_page_number }}"> &lt; </a>
+        {% endif %}
+        {% if page.has_next %}
+            <a href="?p={{ page.next_page_number }}"> &gt; </a>
+            <a href="?p={{ page.paginator.num_pages }}"> &gt;&gt; </a>
+        {% endif %}
+    </div>
+    {% endif %}
 </main>
 {% endblock %}