Update components/functions.py

components/functions.py

@@ -16,7 +16,7 @@ from solders.keypair import Keypair
 from solders.pubkey import Pubkey
 from solders.system_program import transfer, TransferParams
 from solders.transaction import Transaction
-
+from solders.message import Message
 
 
 
@@ -187,20 +187,29 @@ def SolanaPayment(state):
 
     lamports = int(float(state["amount"]) * 1_000_000_000)
 
-    tx = Transaction().add(
-        transfer(
-            TransferParams(
-                from_pubkey=sender.pubkey(),
-                to_pubkey=recipient,
-                lamports=lamports
-            )
+    bh_resp = client.get_latest_blockhash()
+    blockhash = bh_resp.value.blockhash
+
+    #Build instruction
+    ix = transfer(
+        TransferParams(
+            from_pubkey=sender.pubkey(),
+            to_pubkey=recipient,
+            lamports=lamports
         )
     )
-
-    result = client.send_transaction(tx, sender)
+    #Build message
+    msg = Message.new_with_blockhash(
+        [ix],
+        sender.pubkey(),
+        blockhash
+    )
+    #Build & sign transaction
+    tx = Transaction([sender], msg, blockhash)
+    #Send it
+    result = client.send_transaction(tx)
 
     return {
         "tx_hash": result.value
     }
 
-