polyphonic/library/templates/library/work_list.html

@@ -30,7 +30,7 @@
 <div class="has-text-centered">
 <a href="?">_</a>
 {% for letter in letters %}
-<a href="?start={{ letter }}">{{ letter }}</a>&nbsp;
+<a href="?start={{ letter }}&sort={{ sort }}">{{ letter }}</a>&nbsp;
 {% endfor %}
 </div>
 {% endif %}
@@ -38,9 +38,9 @@
 <table class="table is-striped is-fullwidth">
     <thead>
         <tr>
-            <th>Work</th>
-            <th>Composer</th>
-            <th class="is-hidden-mobile">Edition</th>
+          <th>Work <span class="icon-text"><a href="?start={{ start }}&sort=name">{{ "list_arrow"|icon }}</a></span></th>
+          <th>Composer <span class="icon-text"><a href="?start={{ start }}&sort=composer">{{ "list_arrow"|icon }}</a></span></th>
+          <th class="is-hidden-mobile">Edition</th>
             {% if not collection and not project %}<th class="is-hidden-touch">Collection</th>{% endif %}
             {% if project %}<th/>{% endif %}
         </tr>

polyphonic/library/views/__init__.py

@@ -205,13 +205,8 @@ class WorkListView(CollectionMixin, TemplateView):
             data["meta"] = qs.meta
             # data["page_range"] = data["page_obj"]["paginator"]
         else:
-            qs = self.get_queryset()
-
-            start = self.request.GET.get("start")
-            if start:
-                start = start.upper()
-                qs = qs.filter(name__gte=start, name__lt=start + "~")
-                data["start"] = start
+            qs, ctx = self.get_filtered_queryset()
+            data.update(ctx)
 
             data["letters"] = string.ascii_uppercase
 
@@ -228,9 +223,27 @@ class WorkListView(CollectionMixin, TemplateView):
     def get_collections(self):
         raise NotImplementedError
 
-    def get_queryset(self):
+    def get_filtered_queryset(self):
         works = self.get_works()
-        return works.order_by("name", "composer", "edition", "pk").distinct()
+        ctx = {}
+
+        sort = self.request.GET.get("sort", "name").lower()
+
+        order = ["name", "composer", "edition"]
+        if sort not in order:
+            raise KeyError(f"Cannot sort by {sort}")
+        order.remove(sort)
+        order = [sort] + order + ["pk"]
+        ctx["sort"] = sort
+
+        start = self.request.GET.get("start")
+        if start:
+            start = start.upper()
+            filters = {f"{sort}__gte": start, f"{sort}__lt": start + "~"}
+            works = works.filter(**filters)
+            ctx["start"] = start
+
+        return works.order_by(*order).distinct(), ctx
 
     def get_results(self, query, page):
         try: