Metafi React SDK
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v1.2.8 (Latest)
v1.2.8 (Latest)
  • What's new in this version?
  • Get Started
  • SDK Reference
    • Provider Initialisation
    • Login
    • ShowWallet
    • HideWallet
    • TransferTokens
    • CallGenericReadFunction
    • CallGenericWriteFunction
    • CallGaslessFunction
    • Checkout
    • RegisterToken
    • RetrieveUser
    • Disconnect
  • Constants
    • Chain
    • Asset
  • UI Customization
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  • Description
  • Details
  • Signature
  • Arguments
  • Return Value
  • Handling Large Numerical Values
  • Example
  1. SDK Reference

CallGenericWriteFunction

This function triggers a modal for the user to confirm the transaction

This is an advanced feature and can drain user wallet funds if you interact with a malicious contract. Only link to trusted smart contract authors.

Description

This allows you to call any smart contract function and process the response. This function should be used to query functions that require the users signature, hence it should be invoked only once the user is logged in.

Details

Signature

CallGenericWriteFunction(args)

Arguments

Parameter
Type
Definition

args.callback?

Function

args.contractAddress

String

Contract address of the smart contract to be called

args.functionABI

JSON

args.functionName

String

Name of the function to be called

args.value?

Number

args.chain

chain (class)

args.params

array

Return Value

None

Handling Large Numerical Values

Applicable to EVM Chains only

While passing in large numerical values (values above 9007199254740991) in args.params, a conversion to BigNumber format needs to be made. You can use the following methods that convert the number to and from the appropriate format:

ConvertNumberToBigNumber(number, decimal) - Use this method while passing in numbers as params to a smart function that requires uint256 numbers

ConvertBigNumberToNumber(bigNumber, decimal) - Use this method while converting response values from a smart contract function call (which are in bigNumber format) to a JS Number

Example

import { useMetafi, chains } from '@metafi/react-sdk';
import stakeContractAbi from '../contracts/abi/stakeContract.json'

function StakeUSDC(user_uuid) {
    const { CallGenericWriteFunction } = useMetafi();

    stakeContractAddress = "0xF5C9F957705bea56a7e806943f98F7877B995826"
    const callback = (res) => {
        console.log(res)
    }
    
    const stake = () => {
        CallGenericWriteFunction({
            callback: callback,
            chain: chains.eth,             
            contractAddress: stakeContractAddress,   
            functionABI: stakeContractAbi.abi,   
            functionName: "stake",
            value: 1,
            params: [],               
        });
    }
    
    return (
        <>
           <button onClick={stake}>Stake ETH</button>
        </>
    );
};
PreviousCallGenericReadFunctionNextCallGaslessFunction

Last updated 2 years ago

Function to callback upon getting result from the smart contract function call For numerical return values, please refer to the . Structure of result object passed into callback function:

The JSON object for the

The value to be sent along with the smart contract invocation. Please refer to the for more information.

Which chain to broadcast the transaction on. Pick a chain from the

Array of objects that will be sent as the arguments to the smart contract function. Please ensure that the order of params matches the contract ABI. For large numerical inputs, please refer to the .

{
    "status": 1/0, // success or fail
    "error": "", // error string if any
    "data": {any}, // data returned from the smart contract function call
}
smart contract ABI
section below
section below
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supported chains list