Understanding the Metamk restriction “Solidity”: Intellectual Contract Data Renewal Manager
When developing a decentralized program (program) using Ethereum, it is very important to understand the boundaries of intellectual contracts. One of these restrictions is the restriction of the renewal of the intellectual contract data to the addresses not for the control of the contract owner.
In this article, we will deepen detailed information about the Come Metamask, a popular wallet for interacting with Ethereum networks, interact with intellectual strength contracts. We will also investigate why this restriction exists and will provide a guide on how to correctly update the user information.
Problem: External updates
When the user tries to update his information in the contract using the MetamK Library, he tries to send the operation from the external address (such as 0x1234567890abcdef). This is because MetamK will give users the opportunity to communicate with Ethereum in the sense of programming.
However, when this occurs, the query fails for the following reasons:
- Since they are not directly related to the renewal of the user's information from the external address, their access is limited.
2 This means that all amendments to the external character (eg "metamask") do not reflect the distributed Code of Agreement.
Solution: Using the Contract Owner's address
To correctly update the user information from the external address, you must use a private key to the intellectual contract owner and distribute the contract using your own account. This guarantees that the updates will be made in a directly distributed contract bypassing the restrictions mentioned above.
Here is a step by step guide:
- Distribute the contract : Use Metamask to distribute the contract with the owner's private key.
2.
- Create a new user subscription : Create a new user subscription using this owner's address and update its information (eg name, -mail, etc.).
4.
Here is the link in the hardness code:
Solidity
Pragma solidity ^0.8.0;
The Userupdater Agreement {
Map formation (address => user) private users;
Audateuuser feature (new line memory) public {
request (MSG.SEnder == owner, “only the contract owner can call this function”);
User user = new user (neotio);
Users [msg.sender] = user;
}
}
Structure user {
The name of the string;
Lines Email Mail;
}
``
Conclusion
In summary, updating the data of the intellectual contract from the address not controlled by the control owner, the Metamask restricts access to the renewal of the distributed contract status. In order to overcome this restriction, it is necessary to use a personal key to the contract owner and to distribute the contract using your account.
Understanding these restrictions and finding alternative solutions can create solid decentralized programs that provide users with consumers without continuity without relying on external actors directly controlling intellectual contracts.
Additional sources
- Metamask Documentation: <
- Soliduality Documentation:
- API Ethereum Documentation: <