Retrieve values of a mapping in an array

Question

For example,

struct somestruct {
        uint someuint;
        mapping(address=>uint) somemapping;
    }


arrayofsomestruct[] public _arrayofsomestruct;

The getter function automatically created for _arrayofsomestruct seems to return someuint in the array, but not the mapping values? Is an additional getter function required to retrieve the values in somemapping?

Answer 1

In your case you can use a getter function where you retrieve all values about specific struct inside array. See this smart contract:

// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;

contract RetrieveMappingValuesFromStructArray {
    struct somestruct {
        uint someuint;
        mapping(address=>uint) somemapping;
    }

    somestruct[] public _arrayofsomestruct;

    function setStruct(uint _firstValue, address _address,  uint _secondValue) public {
        somestruct storage someStruct = _arrayofsomestruct.push();
        someStruct.someuint = _firstValue;
        someStruct.somemapping[_address] = _secondValue;
    }

    function getStruct(uint index, address _address) external view returns(uint someuint, uint somemapping) {
        return (_arrayofsomestruct[index].someuint, _arrayofsomestruct[index].somemapping[_address]);
    }

}