.

cards/views.py

@@ -456,6 +456,31 @@ def print_preview(request):
     for i in range(0, len(ordered), per_page):
         pages.append(ordered[i:i+per_page])
 
+    # -- Top-trump calculation across the full selection -----------------
+    # For each card compute its best stat percent (0-100) and the stat(s)
+    # that achieve that percent. Then find the global maximum best-value and
+    # mark any card whose best-value equals that maximum as a top-trump.
+    all_best_values = []
+    for c in ordered:
+        # compute percents using model helpers
+        s = c.speed_percent()
+        w = c.weight_percent()
+        it = c.intelligence_percent()
+        h = c.height_percent()
+        # map names to values
+        stats = {'speed': s, 'weight': w, 'intelligence': it, 'height': h}
+        max_val = max(stats.values())
+        best_stats = [name for name, val in stats.items() if val == max_val]
+        # attach computed attributes so templates can read them
+        setattr(c, 'best_value', max_val)
+        setattr(c, 'best_stats', best_stats)
+        all_best_values.append(max_val)
+    # determine global maximum and mark cards as top-trump if they match
+    global_max = max(all_best_values) if all_best_values else 0
+    for c in ordered:
+        setattr(c, 'is_top_trump', getattr(c, 'best_value', 0) == global_max)
+    # ---------------------------------------------------------------------
+
     # Determine grid columns for layout: use 1 column for 1-up, 2 columns for 2/4-up
     columns = 1 if per_page == 1 else 2