[Ethereum] How to execute the withdraw function to withdraw token from smart contract

brownieetherscansmart-contract-walletssolidity

Total newbie here. So I deployed a contract and already did the flash loan, but now I want to withdraw the remaining funds that I deposited into the smart contract (for the premium fee). How do I actually execute this function, and where do I do it?

Do I just throw this function in a script and run it, do I somehow call the function in the terminal?

On etherscan, I was looking for the write section of my contract but I couldn't find the ability to withdraw the funds from there, so I am just a bit confused as to how I can actually interact with this contract. (i.e transferOwnership, withdraw, transferFrom, etc…)

Here is a pic of the withdraw code

And here is how the architecture of the code is

Best Answer

If you want to do a transaction with a deployed smart contract, you need to interact with it on the blockchain level. There is many ways to do it. For example you can use MyEtherWallet.

You can deploy your contract on MainNet (it cost you ETH), but there is other testnet network such as Ropsten. You can also upload it into a local blockchain with RemixIDE (browser) or Geth etc.

MyEtherWallet can handle data to "make" the transaction on any network. But you need two parameters :

Contract address.
Contract ABI (i.e "how to use this smart contract" for wallet)

Then you need a wallet that secure your private key to "sign" this transaction and send it to the network.

Related Solutions

Solidity Wallet Integration – Approve Contract to Withdraw Funds from User’s Wallet

You're right, your contract should not call the approve method itself, as it would become the msg.sender in the context of the token smart contract, which would cause your contract to self-approve.

You want the user to approve your contract and you can write a script to achieve this. An exemple with web3js 1.2 could be :

var erc20Instance = new web3.eth.Contract(abi,Token_address);

erc20Instance.methods.approve(contractAddress, amount).send({from: userAddress}, 
function(err, transactionHash) {
//some code
});

with :

abi : the abi of the token contract. You can use https://ethereumdev.io/abi-for-erc20-contract-on-ethereum/ for an ERC20.
contractAddress : the contract address to approve.
amount : the amount to approve. Note that you can "disapprove" the contract by sending a new transaction with an amount of 0, as it will override the previous value.
userAddress : the sender's address.

[Ethereum] Solidity Smart Contract – Split and Send Contract ETH Balance Between Two Accounts

seems pretty explanatory to me.... in case you missed it he wants to create a function and then call that function from the pay address function. i interpret his question as asking, "can i hand off the payment to a subfunction". look at payment splitter under open zeppelin. you should be able to fathom your own code from that. https://forum.openzeppelin.com/t/using-paymentsplitter-with-remix/3007

Best Answer

Related Solutions

Solidity Wallet Integration – Approve Contract to Withdraw Funds from User’s Wallet

[Ethereum] Solidity Smart Contract – Split and Send Contract ETH Balance Between Two Accounts

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