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Error Message: «The supplier cannot use a request feature» when connecting to Metask in React
When trying to integrate metamark, a decentralized popular application (DAPP) into the network using Reactjs, users often encounter an error that they should use @metamark/detect-proof. This is due to the fact that the metamark supplier has changed API in the last versions. In this article, we will study why you receive this error and you will provide a solution to use the "Request" function.
Why do I look like I miss "the request?"
In the previous versions of Metask (up to 4.0.7), the supplier will accept an inversion feature that will be appointed when the data is available by the web3 supplier. However, with the latest Metask (version 4.1 and later), the supplier introduced an architecture led by events.
In order to use the "Request" function in the React applications, connected by the new Metask Supplier, you will need to manually manage these events. Therefore:
- Web3 supplier is no longer responsible for sending data to Copia Metask.
- Instead, the supplier sends events that can be subscribed to the use of the Onprovide repair method.
Solution: UseOnproviderentand implement a personalized request feature
To avoid this number, you can use the reverse call of "Onproviderevent" by the Methass Supplier. Here is a fragment of updated sample code:
Jsx
Import reaction, {Used affect} by 'react';
Import '@metamark/detect-provider';
// initialize the Metask Copy with events processing
CON METASKPROVIDER = ({children}) => {
Const [supplier, setprovider] = react.usestate (null);
USEEFFECT (() => {
Const Providententharandler = async () => {
Try {
// here you can use the "Request" function from @metamans/detect-financial
Wait -a new promise ((decisive) => {
solve ();
});
} Catch (error) {
Console.error (error);
}
};
// listen to the provider's events to call for processor events when data is available
Const Handerevent = async () => {
IF (supplier) {
Try {
CONC ASPORTS = wait for a new promise ((solve) => {
solve ();
});
// Use "Answer" from the request function here
Console.log ("Received data:", answer);
} Catch (error) {
Console.error (error);
}
}
};
Handleevent ();
return () => {
Set (null);
};
}, []);
Return (
{Supplier &&
);
};
Const coup = () => {
Return (
);
};
In this up -to -date example, we created ametamarkprofider component, who listens to the events from the supplier using» Onprovidervent «. When an event is triggered (for example, when the data are available), it calls our personalized request function.
Conclusion
While you integrate metamark with react in the latest versions it has some restrictions due to the new API, you can continue to use the «request» function by processing the events. The sample code fragment provided demonstrates how to introduce a simple request function using Onproviderent.
