How do I add permissions to each role in AccessControl?

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1

Now in access contorl.sol,there are some basic operations ,like grantRole(),revokeRole(), but you need assign permissions to each role to achieve access control purposes…Later, permission inheritance can also be added .
But I have no idea about adding permissions.
Can anyone give me some ideas?
Thank you!
:computer: Environment

:memo:Details

:1234: Code to reproduce

2

Hi @wangyuyue,

We can use AccessControl to define roles and then check for those roles when accessing certain functions.

The example below (from the documentation) shows a Minter Role and a Burner Role, with the Minter Role having permission to mint (call the mint function) and the Burner Role having permission to burn (call the burn function)

from: https://docs.openzeppelin.com/contracts/3.x/access-control#using-access-control

// contracts/MyToken.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract MyToken is ERC20, AccessControl {
    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
    bytes32 public constant BURNER_ROLE = keccak256("BURNER_ROLE");

    constructor(address minter, address burner) public ERC20("MyToken", "TKN") {
        _setupRole(MINTER_ROLE, minter);
        _setupRole(BURNER_ROLE, burner);
    }

    function mint(address to, uint256 amount) public {
        require(hasRole(MINTER_ROLE, msg.sender), "Caller is not a minter");
        _mint(to, amount);
    }

    function burn(address from, uint256 amount) public {
        require(hasRole(BURNER_ROLE, msg.sender), "Caller is not a burner");
        _burn(from, amount);
    }
}

Is this what you meant?

3

Hi @wangyuyue,

I just wanted to check if you had your question answered?