Grouped Transaction

Create and sign an atomic payment transaction (2 transactions grouped).

Preconditions

• User has a wallet and has shared an account with the site

• The transaction sender must match with one of the addresses shared by the user.

Interactive Example

• Form
• Code

From

To for Transaction 1

Invalid Address

Amount for Transaction 1

To for Transaction 2

Invalid Address

Amount for Transaction 2

signTxns() Response

In order to run this example, you need to execute connect() method.

Example code

With signTxns:

import algosdk from "algosdk";
import MyAlgoConnect from '@randlabs/myalgo-connect';
 
const algodClient = new algosdk.Algodv2("",'https://node.testnet.algoexplorerapi.io', '');
const params = await algodClient.getTransactionParams().do();

const txn1 = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
    suggestedParams: {
        ...params,
    },
    from: sender,
    to: receiver1, 
    amount: amount1
});

const txn2 = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
    suggestedParams: {
        ...params,
    },
    from: sender,
    to: receiver2, 
    amount: amount2
});

const txnsArray = [ txn1, txn2 ];
const groupID = algosdk.computeGroupID(txnsArray)
for (let i = 0; i < 2; i++) txnsArray[i].group = groupID;

const txns = txnsArray.map(txn => ({
    txn: Buffer.from(txn.toByte()).toString('base64')
}));

const myAlgoConnect = new MyAlgoConnect();
const signedTxns = await myAlgoConnect.signTxns(txns);

With signTransaction:

import algosdk from "algosdk";
import MyAlgoConnect from '@randlabs/myalgo-connect';
 
const algodClient = new algosdk.Algodv2("",'https://node.testnet.algoexplorerapi.io', '');
const params = await algodClient.getTransactionParams().do();
const txn1 = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
    suggestedParams: {
        ...params,
    },
    from: sender,
    to: receiver1, 
    amount: amount1
});
const txn2 = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
    suggestedParams: {
        ...params,
    },
    from: sender,
    to: receiver2, 
    amount: amount2
});
const txnsArray = [ txn1, txn2 ];
const groupID = algosdk.computeGroupID(txnsArray)
for (let i = 0; i < 2; i++) txnsArray[i].group = groupID;
const myAlgoConnect = new MyAlgoConnect();
const signedTxns = await myAlgoConnect.signTransaction(txnsArray.map(txn => txn.toByte()));