avoid duplicating err and msg code

files/helpers/get.py

@@ -361,3 +361,15 @@ def get_profile_picture(identifier:Union[int, str]) -> str:
 		x = get_user(identifier, graceful=True)
 
 	return x.profile_url if x else 'not_found'
+
+def get_err():
+	if request.referrer and request.referrer.split('?')[0] == request.base_url:
+		return request.values.get("err")
+	else:
+		return None
+
+def get_msg():
+	if request.referrer and request.referrer.split('?')[0] == request.base_url:
+		return request.values.get("msg")
+	else:
+		return None

files/routes/static.py

@@ -213,12 +213,7 @@ def api(v):
 @app.get("/media")
 @auth_desired
 def contact(v:Optional[User]):
-	if request.referrer and request.referrer.split('?')[0] == request.base_url:
-		msg = request.values.get("msg")
-	else:
-		msg = None
-
-	return render_template("contact.html", v=v, msg=msg)
+	return render_template("contact.html", v=v, msg=get_msg())
 
 @app.post("/send_admin")
 @limiter.limit("1/second;1/2 minutes;10/day")

files/routes/subs.py

@@ -321,12 +321,7 @@ def create_sub(v):
 	if not v.can_create_hole:
 		abort(403)
 
-	if request.referrer and request.referrer.split('?')[0] == request.base_url:
-		err = request.values.get("err")
-	else:
-		err = None
-
-	return render_template("sub/create_hole.html", v=v, cost=HOLE_COST, error=err)
+	return render_template("sub/create_hole.html", v=v, cost=HOLE_COST, error=get_err())
 
 @app.post("/create_hole")
 @limiter.limit(DEFAULT_RATELIMIT, key_func=get_ID)