Reading data from many contracts with wagmi and react
As a programmer, you probably know the Wagmi Library, which provides an easy -to -use API interface to interact with many blockchain contracts using web3.js and ethers.js. In this article, we will examine how to use the scales of wagmi `user ” of the user.
Problem
Suppose you have a list of 5 contracts with the same Abi (Application Binary Interface), but each contract has its own implementation. You want to download all the necessary data from these contracts using wagmi, but now '' ” '' ” '' ‘' ‘' ‘' '
Solution
To solve this problem, we will use the haka wagmi “UsetContractTttance” and create a number of instances for each contract. Then we transfer this board to `user ‘usdcontract’ to simultaneously download data from all contracts.
Here is an example of the code to start:
`Javascript
Import {ETHERS} with "ETHERS";
Import {UsereadContracts} with "@wagmi/wagmi";
Const Abi = [...]; // Your Abi Contract
// create a number of instances for each contract
Const Contractinanies = [
{
ID: 1,
Address: "0x ...",
Instance: etherers.contractabi.fromwei (Abi, ethers.utils.hextowei ('...')),),
},
{
ID: 2,
Address: "0x ...",
Instance: etherers.contractabi.fromwei (Abi, ethers.utils.hextowei ('...')),),
},
// ...
];
// use the PortContractinstanka to get a number of contractual instances
Const contract = expect the user (contract);
// now you can download Data From All Contracts At The Same Time Using Hook Wagmi
async fetchdata () {Function
Const Data = [];
for (contract contract) {
to try {
Const result = wait for the use of getcontractdata (contract.address, abi);
Data.Push (... result);
} catch (error) {
console.error (Error);
}
}
Feedback;
}
// use the fetchdata function as soon as you need to download data from many contracts
Setinterval (fetchdata, 1000); // download Every second
tips and variants
- You can hand over the object with contract addresses as crucial couples for “useradcontrats”.
`Javascript
Const Contractinanies = [
{
ID: 1,
Address: "0x ...",
Instance: etherers.contractabi.fromwei (Abi, ethers.utils.hextowei ('...')),),
},
{
ID: 2,
Address: "0x ...",
Instance: etherers.contractabi.fromwei (Abi, ethers.utils.hextowei ('...')),),
},
];
- If you need to download data from contracts in parallel, you can use the hook wagmi “usetGetContractdata” with the object in which the key is the address of the contract, and the value is a function returning data for each contract.
`Javascript
Const Contractinanies = [
{
ID: 1,
Address: "0x ...",
Instance: etherers.contractabi.fromwei (Abi, ethers.utils.hextowei ('...')),),
},
{
ID: 2,
Address: "0x ...",
Instance: etherers.contractabi.fromwei (Abi, ethers.utils.hextowei ('...')),),
},
];
Const data = {};
for (contract contract) {
Data [contract.address] = wait for the use of getcontratdata (contract.address, ABI);
}
I hope it will help! Let me know if you have any questions or need further help.