ERC-1155项活动有待批准

Question

ERC-1155：

    function approve(address _spender, uint256 _id, uint256 _currentValue, uint256 _value) external;

    /**
        @dev Allow other accounts/contracts to spend tokens on behalf of msg.sender
        Also, to minimize the risk of the approve/transferFrom attack vector
        (see https://docs.google.com/document/d/1YLPtQxZu1UAvO9cZ1O2RPXBbT0mooh4DYKjA_jp-RLM/), this function will throw if the current approved allowance does not equal the expected _currentValue, unless _value is 0
        @param _spender        Address to approve
        @param _ids            IDs of the CryptoItems
        @param _currentValues  Expected current values of allowances per item type
        @param _values         Allowance amounts per item type
    */
    function batchApprove(address _spender, uint256[] calldata _ids, uint256[] calldata _currentValues, uint256[] calldata _values) external;

这两个函数应该发出哪些事件(以及使用哪些参数)？

Answer 1

这两个功能不是EIP-1155 (https://eips.ethereum.org/EIPS/eip-1155)的一部分.事实上，EIP只定义了：

    /**
    @notice Enable or disable approval for a third party ("operator") to manage all of the caller's tokens.
    @dev MUST emit the ApprovalForAll event on success.
    @param _operator  Address to add to the set of authorized operators
    @param _approved  True if the operator is approved, false to revoke approval
*/
function setApprovalForAll(address _operator, bool _approved) external;

但是，您提到的方法approve已经实现了这里，作为对ERC1155契约的扩展，以便允许特定Ids使用。

Answer 2

ERC-1155规范推荐EIP-1761作用域审批接口作为允许特定令牌批准的方法：https://eips.ethereum.org/EIPS/eip-1761