Display start and finish dates in books list.

fedireads/templates/snippets/shelf.html

@@ -18,6 +18,12 @@
     <th>
         Shelved
     </th>
+    <th>
+        Started
+    </th>
+    <th>
+        Finished
+    </th>
     <th>
         External links
     </th>
@@ -44,6 +50,13 @@
     <td>
         {{ book.created_date | naturalday }}
     </td>
+    {% latest_read_through book user as read_through %}
+    <td>
+        {{ read_through.start_date | naturalday |default_if_none:""}}
+    </td>
+    <td>
+        {{ read_through.finish_date | naturalday |default_if_none:""}}
+    </td>
     <td>
         <a href="https://openlibrary.org/book/{{ book.openlibrary_key }}" target="_blank">OpenLibrary</a>
     </td>

fedireads/templatetags/fr_display.py

@@ -168,3 +168,8 @@ def current_shelf(context, book):
         return None
     return shelf.name
 
+@register.simple_tag(takes_context=False)
+def latest_read_through(book, user):
+    return models.ReadThrough.objects.filter(
+        user=user,
+        book=book).order_by('-created_date').first()