useSignAndSendTransaction

Hook to sign and send a Solana transaction using the connected Solana wallet from Web3Auth.

Import

import { useSignAndSendTransaction } from '@web3auth/modal/react/solana'

Usage

import { useSignAndSendTransaction } from '@web3auth/modal/react/solana'
import { TransactionOrVersionedTransaction } from '@web3auth/modal'

function SignAndSendTransactionButton({
  transaction,
}: {
  transaction: TransactionOrVersionedTransaction
}) {
  const { signAndSendTransaction, loading, error, data } = useSignAndSendTransaction()

  const handleSignAndSend = async () => {
    try {
      const signature = await signAndSendTransaction(transaction)
      // Do something with signature
    } catch (e) {
      // Handle error
    }
  }

  return (
    <div>
      <button onClick={handleSignAndSend} disabled={loading}>
        {loading ? 'Signing & Sending...' : 'Sign & Send Transaction'}
      </button>
      {error && <div>Error: {error.message}</div>}
      {data && <div>Signature: {data}</div>}
    </div>
  )
}

Return Type

export type IUseSignAndSendTransaction = {
  loading: boolean
  error: Web3AuthError | null
  data: string | null
  signAndSendTransaction: (transaction: TransactionOrVersionedTransaction) => Promise<string>
}

loading

boolean

Indicates if the transaction signing and sending is in progress.

error

Web3AuthError | null

Error object if signing or sending fails, otherwise null.

data

string | null

The transaction signature as a string, or null if not signed yet.

signAndSendTransaction

(transaction: TransactionOrVersionedTransaction) => Promise<string>

Function to sign and send a transaction. Returns the transaction signature as a string.

Example

sendVersionedTransaction.tsx

import { FormEvent } from 'react'
import { useSolanaWallet, useSignAndSendTransaction } from '@web3auth/modal/react/solana'
import {
  LAMPORTS_PER_SOL,
  PublicKey,
  SystemProgram,
  TransactionMessage,
  VersionedTransaction,
} from '@solana/web3.js'

export function SendVersionedTransaction() {
  const {
    data: hash,
    error,
    loading: isPending,
    signAndSendTransaction,
  } = useSignAndSendTransaction()
  const { accounts, connection } = useSolanaWallet()

  async function submit(e: FormEvent<HTMLFormElement>) {
    e.preventDefault()
    const formData = new FormData(e.target as HTMLFormElement)
    const to = formData.get('address') as string
    const value = formData.get('value') as string

    const block = await connection!.getLatestBlockhash()
    const TransactionInstruction = SystemProgram.transfer({
      fromPubkey: new PublicKey(accounts![0]),
      toPubkey: new PublicKey(to),
      lamports: Number(value) * LAMPORTS_PER_SOL,
    })

    const transactionMessage = new TransactionMessage({
      recentBlockhash: block.blockhash,
      instructions: [TransactionInstruction],
      payerKey: new PublicKey(accounts![0]),
    })

    const transaction = new VersionedTransaction(transactionMessage.compileToV0Message())
    signAndSendTransaction(transaction)
  }

  return (
    <div>
      <h2>Send Versioned Transaction</h2>
      <form onSubmit={submit}>
        <input name="address" placeholder="Address" required />
        <input name="value" placeholder="Amount (SOL)" type="number" step="0.01" required />
        <button disabled={isPending} type="submit">
          {isPending ? 'Confirming...' : 'Send'}
        </button>
      </form>
      {hash && <div>Transaction Hash: {hash}</div>}
      {error && <div>Error: {error.message}</div>}
    </div>
  )
}