Ethereum: Read data from multiple contracts using wagmi and react
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Reading Data from several contracts with WAGMI and React
As a developer, you are likely to know the Wagmi Library, which provides an easy-to-use application interface interacting with several Blockchain contracts with Web3.JS and Ethers.JS. In this article, we are looking at how Wagmin’s ‘UsereAdContracts’ hook can be used for data from several Ethereum contracts at a time.
problem
Suppose you have a list of five contracts with the same ABI (application botical interface), but each contract has its own implementation. You want to retrieve all the necessary information on these contracts using WAGMI, but currently “Usereadcontracts” will only return one contract data at a time.
Solution
To solve this problem, we use the Wagmin “UseGetContractance” hook and create a number of cases for each contract. Then we move this table to apply for “UsereAdcontracts” at the same time.
Here is some sample code to start:
`Javascript
Import {ether} ‘ether’;
Bring {usereadcontracts} ‘@wagmi/wagmi’;
Const abi = […]; // your contract abbi
// Create a set of cases for each agreement
Const Contractinances = [
{
ID: 1,
Address: ‘0x …’,
Example: eetter.contractabi.fromwei (Abi, eetter.utils.hextowei (‘…)) (),),),)
},
{
ID: 2,
Address: ‘0x …’,
Example: eetter.contractabi.fromwei (Abi, eetter.utils.hextowei (‘…)) (),),),)
},
// …
]
// Use the UseGetContractance application to get a set of contracts
Const contracts = Wait user upcontracts (contracts);
// Now you can retrieve information from all contracts at the same time using WAGMI’s UseGetContractData hook
Async function fetchdata () {
Const data = [];
(Const agreement) {
Try {
Const Result = Wait UseGetContractdata (Contract.address, ABI);
data.push (… result.data);
} catch (error) {
Console.error (error);
}
}
return information;
}
// Use FetChdata every time you have to retrieve information from multiple contracts
Setinterval (fetchdata, 1000); // apply every second
`
tips and variations
- You can transfer an object that has contract addresses as key -valuable pairs of
usereadcontracts.
`Javascript
Const Contractinances = [
{
ID: 1,
Address: ‘0x …’,
Example: eetter.contractabi.fromwei (Abi, eetter.utils.hextowei (‘…)) (),),),)
},
{
ID: 2,
Address: ‘0x …’,
Example: eetter.contractabi.fromwei (Abi, eetter.utils.hextowei (‘…)) (),),),)
},
]
`
- If you have to retrieve information on contracts in parallel, you can use Wagmin
usecontractdatahook for an object where the key is the contract address and the value is a function that returns the information from each contract.
`Javascript
Const Contractinances = [
{
ID: 1,
Address: ‘0x …’,
Example: eetter.contractabi.fromwei (Abi, eetter.utils.hextowei (‘…)) (),),),)
},
{
ID: 2,
Address: ‘0x …’,
Example: eetter.contractabi.fromwei (Abi, eetter.utils.hextowei (‘…)) (),),),)
},
]
Const data = {};
(Const agreement) {
data [contract.address] = wait for usegetcontractdata (contract.address, abbi);
}
`
I hope this will help! Tell me if you have any questions or you need any further help.
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