Add user-related collections feature with HTMX support and timestamps for collections

atlas/views.py

@@ -1151,6 +1151,39 @@ def user_collections(request):
     # endpoint is called by HTMX we prefer returning a small fragment so it
     # can be swapped into the index page without duplicating layout.
 
+
+@login_required
+def user_related_collections(request):
+    """Return up to 10 most recently modified collections where the user
+    is an author or a marker. If called via HTMX return a fragment suitable
+    for swapping into the index page.
+    """
+    user = request.user
+    qs = (
+        CaseCollection.objects.filter(Q(author=user) | Q(markers=user))
+        .distinct()
+        .order_by("-updated")[:10]
+    )
+
+    related = []
+    for c in qs:
+        related.append(
+            {
+                "collection": c,
+                "is_author": c.author.filter(id=user.id).exists(),
+                "is_marker": c.markers.filter(id=user.id).exists(),
+            }
+        )
+
+    context = {"related_collections": related}
+
+    is_htmx = getattr(request, "htmx", False) or request.headers.get("HX-Request", "").lower() == "true"
+    if is_htmx:
+        html = render_to_string("atlas/partials/_user_related_collections.html", context, request=request)
+        return HttpResponse(html)
+
+    return render(request, "atlas/user_collections.html", context)
+
 @login_required
 def collection_options(request):
     if not request.htmx: