Support ordering on search results

wagtail/admin/views/pages/listing.py

@@ -117,19 +117,31 @@ class BaseIndexView(PermissionCheckedMixin, BaseListingView):
         return super().get(request)
 
     def get_ordering(self):
-        ordering = self.request.GET.get("ordering", "-latest_revision_created_at")
-        if ordering not in [
+        valid_orderings = [
             "title",
             "-title",
-            "content_type",
-            "-content_type",
             "live",
             "-live",
             "latest_revision_created_at",
             "-latest_revision_created_at",
-            "ord",
-        ]:
-            ordering = "-latest_revision_created_at"
+        ]
+
+        if self.query_string:
+            # default to ordering by relevance
+            default_ordering = None
+        else:
+            default_ordering = "-latest_revision_created_at"
+            # ordering by page order is only available when not searching
+            valid_orderings.append("ord")
+
+            # ordering by content type not currently available when searching, due to
+            # https://github.com/wagtail/wagtail/issues/6616
+            valid_orderings.append("content_type")
+            valid_orderings.append("-content_type")
+
+        ordering = self.request.GET.get("ordering", default_ordering)
+        if ordering not in valid_orderings:
+            ordering = default_ordering
 
         return ordering
 
@@ -146,6 +158,7 @@ class BaseIndexView(PermissionCheckedMixin, BaseListingView):
 
         self.ordering = self.get_ordering()
 
+        if not is_searching:
             if self.ordering == "ord":
                 # preserve the native ordering from get_children()
                 pass
@@ -180,6 +193,11 @@ class BaseIndexView(PermissionCheckedMixin, BaseListingView):
         pages = pages.annotate_site_root_state().annotate_approved_schedule()
 
         if is_searching:
+            if self.ordering:
+                pages = pages.order_by(self.ordering).autocomplete(
+                    self.query_string, order_by_relevance=False
+                )
+            else:
                 pages = pages.autocomplete(self.query_string)
 
         return pages