useScaffoldWriteContract

Use this hook to write to your smart contract by calling state-mutating functions.

const { sendAsync } = useScaffoldWriteContract({
  contractName: "YourContract",
  functionName: "updateGreeting",
  args: ["0xd8da6bf26964af9d7eed9e03e53415d37aa96045", "Hello, world!"],
});

This example calls the updateGreeting function of the YourContract smart contract.

Usage Example

const { sendAsync } = useScaffoldWriteContract({
  contractName: "YourContract",
  functionName: "updateGreeting",
  args: ["0xd8da6bf26964af9d7eed9e03e53415d37aa96045", "Hello, world!"],
  options: { gas: 100000 },
});

const handleUpdateGreeting = async () => {
  try {
    const result = await sendAsync();
    console.log("Transaction successful:", result);
  } catch (error) {
    console.error("Transaction failed:", error);
  }
};

In this example, the updateGreeting function of the YourContract is called with the specified arguments. The transaction is sent using the sendAsync method, which handles the logic for sending the transaction and returns a promise

Configuration

Parameter	Type	Description
contractName	string	Name of the contract to write to.
functionName	string	Name of the function to call.
args (optional)	unknown[]	Array of arguments to pass to the function (if any). Types are inferred from the contract's function parameters. For special datatypes such as enums, you can pass in enum types from starknet.js

Return Values

• The sendAsync method is used to send the write transaction. It returns a promise that resolves when the transaction is confirmed.
• The extended object includes properties inherited from the useSendTransaction hook of starknet-start. You can check their documentation for the specific return values.