Update app.py

app.py

@@ -51,6 +51,7 @@ def generate_coupon_code(length=10):
     """Generate a unique alphanumeric coupon code."""
     return ''.join(random.choices(string.ascii_uppercase + string.digits, k=length))
 
+
 def process_referral_code(referral_code):
     """
     Process the referral code by creating a referral coupon if the referrer is found.
@@ -96,7 +97,7 @@ def signup():
         phone = request.form.get("phone")
         email = request.form.get("email")
         password = request.form.get("password")
-        referral_code = request.form.get("referral_code")
+        referral_code = request.form.get("referral")
         try:
             # Step 1: Generate a unique referral code for the new user
             while True: