Copy nested struct from memory to storage

Question

I have a fully filled struct ( in memory ), I want to store it ( in storage ), but I can't convert it. I've tested many ways and I got two kinds of errors:

• copying of type struct of Player memory[] memory to storage not yet supported

• explicit conversion error

    mapping(uint256 => Match) public matchList;
  
    struct Team {
    Player[] players;
    }
  
    struct Player {
    address username;
    uint256 index;
    uint256 payableInUSD;
    }
  
    struct MatchOption {
    uint256 entry;
    uint256 date;
    uint256 createAt;
    uint256 matchId;
    }
  
    struct Match {
    MatchOption matchOption;
    Team[] teams;
    uint256 price;
    uint256 createAt;
    }
  
   specificMatch   // this is a Match(struct) in memory, I have it fully 
   filled from frontend
  
    Match[] storage copiedMatch= specificMatch;  // THIS DOESN'T WORK
    matchList[0] = copiedMatch;
  

Answer 1

You can't explicitly fill your new specificMatch array in deployment of the code. Rather, you would have to create a function to fill the new array with the structs you wish to store in it. As a state variable, these would automatically then be stored in storage.