CallGenericWriteFunction

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.  It is recommended to first call the CallGenericWriteFunctionTest function to get an estimate of the gas fees required for this transaction, which can be displayed to users before the confirm or deny the transaction.
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
async CallGenericWriteFunction(args, apiKey)
Arguments
Parameter
Type
Definition
args.callback?
Function
Function to callback upon getting result from the smart contract function call

For numerical return values, please refer to the section below.

Structure of result object passed back to the callback function:
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{
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    "status": 1/0, // success or fail
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    "data": "data", // the transaction object
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    "error": "error", // error string if any
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}
args.contractAddress
String
Contract address of the smart contract to be called
args.functionABI
JSON
The JSON object for the smart contract ABI​
args.functionName
String
Name of the function to be called
args.value?
BigNumber
The value to be sent along with the smart contract invocation. Please refer to the section below for more information.
args.chain
chain (class)
Which chain to broadcast the transaction on. Pick a chain from the supported chains list​
args.params
array
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 section below.
apiKey
String
The API Key generated from the Developer Portal​
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
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import stakeContractAbi from './contracts/abi/stakeContract.json'
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import {
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    CallGenericWriteFunction,
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    ConvertNumberToBigNumber,
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    chains
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} from '@metafi/metafi-js-package';
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​
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function App() {
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    const stakeTokens = () => {
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        CallGenericWriteFunction({
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                chain: chains.eth,             
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                contractAddress: "0xF5C9F957705bea56a7e806943f98F7877B995826",   
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                functionABI: stakeContractAbi.abi,   
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                functionName: "stake",
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                value: ConvertNumberToBigNumber(1, 18),
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                params: [],
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                callback: (res) => {
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                    console.log(res);
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                }
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            },
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            "YOUR-API-KEY"
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        );
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    }
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    return (
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        <div>
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	    <button onClick={stakeTokens}>stakeTokens</button>
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        </div>
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    );
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}
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​
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export default App;
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​

Parameter	Type	Definition
`args.callback?`	Function	Function to callback upon getting result from the smart contract function call For numerical return values, please refer to the section below. Structure of result object passed back to the callback function: 1 { 2 "status": 1/0, // success or fail 3 "data": "data", // the transaction object 4 "error": "error", // error string if any 5 }
`args.contractAddress`	String	Contract address of the smart contract to be called
`args.functionABI`	JSON	The JSON object for the smart contract ABI
`args.functionName`	String	Name of the function to be called
`args.value?`	BigNumber	The value to be sent along with the smart contract invocation. Please refer to the section below for more information.
`args.chain`	chain (class)	Which chain to broadcast the transaction on. Pick a chain from the supported chains list
`args.params`	array	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 section below.
`apiKey`	String	The API Key generated from the Developer Portal

CallGenericReadFunction

CallGenericWriteFunctionTest

Last modified 3mo ago