Make randomid deterministic to improve caching

games/templatetags/randomid.py

@@ -1,5 +1,4 @@
-import random
-import string
+import hashlib
 
 from django import template
 
@@ -8,4 +7,7 @@ register = template.Library()
 
 @register.simple_tag
 def randomid(seed: str = "") -> str:
-    return str(hash(seed + "".join(random.choices(string.ascii_lowercase, k=10))))
+    content_hash = hashlib.sha1(seed.encode()).hexdigest()
+    if seed:
+        return content_hash[:max(0, 10 - len(seed))] + seed
+    return content_hash[:10]