AccessControl: How to setup DEFAULT_ADMIN_ROLE as msg.sender?

wangyuyue · July 1, 2020, 1:19am

In my program,there is a system manager,who in charge of write smart contract and users identity manage,like grant role or revoke role ,so i want to set my contract’s msg.sender as DEFAUIT_ADMIN_ROLE(in AccessControl.sol)? but i wonder how to realize it ? hope anyone can give me some directions… thank you !!!

abcoathup · July 1, 2020, 6:08am

Hi @wangyuyue,

We need to call _setupRole for DEFAULT_ADMIN_ROLE.

Have a look at how this is done in ERC20PresetMinterPauser

github.com

OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/contracts/presets/ERC20PresetMinterPauser.sol#L36


bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");

/**
 * @dev Grants `DEFAULT_ADMIN_ROLE`, `MINTER_ROLE` and `PAUSER_ROLE` to the
 * account that deploys the contract.
 *
 * See {ERC20-constructor}.
 */
constructor(string memory name, string memory symbol) public ERC20(name, symbol) {
    _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());

    _setupRole(MINTER_ROLE, _msgSender());
    _setupRole(PAUSER_ROLE, _msgSender());
}

/**
 * @dev Creates `amount` new tokens for `to`.
 *
 * See {ERC20-_mint}.
 *

I have deleted the duplicate question: How to set msg.sender as DEFAUIT_ADMIN_ROLE?

wangyuyue · July 1, 2020, 1:11pm

Thank you for your quick reply!
Thank you for all you’ve done for this community!
Thank you for always being patient and careful in answering everyone’s questions!!!

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AccessControl: How to setup DEFAULT_ADMIN_ROLE as msg.sender?

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