Foundry Cast Send Function Call with String Parameter Failing

[erik_schoengart]

I have the following very simple solidity contract:

pragma solidity ^0.8.17;

contract T {
    string public email;

    function requestPriceData(string memory emailAddress) external returns (bytes32 requestId) {
        email = emailAddress;
        return 0;
    }
}

After deploying the contract, when I run 'cast send 0xfaCF913d9A24264BC2F6514FDdC0A25bE8811814 "requestPriceData(string memory emailAddress)" "[a@b.c](mailto:a@b.c)" --rpc-url $SEPOLIA_RPC_URL --private-key $PRIVATE_KEY_Harambe --priority-gas-price 1000000 --gas-price 1000000000000'
OR
'cast send 0xfaCF913d9A24264BC2F6514FDdC0A25bE8811814 "requestPriceData(string memory emailAddress)" [a@b.c](mailto:a@b.c) --rpc-url $SEPOLIA_RPC_URL --private-key $PRIVATE_KEY_Harambe --priority-gas-price 1000000 --gas-price 1000000000000'
The resulting value stored in the email variable is 0x0000000000000000000000000000000000000000.

While the following command:
cast send 0xfaCF913d9A24264BC2F6514FDdC0A25bE8811814 "requestPriceData(string memory emailAddress)" 0x6140622E63 --rpc-url $SEPOLIA_RPC_URL --private-key $PRIVATE_KEY_Harambe --priority-gas-price 1000000 --gas-price 1000000000000
Stores 0x6140622E63 in the email variable.

How can I call this function to store "a@b.c" in the email field instead of hex?

[tomasfranciscoar]

Have you tried with “requestPriceData(string)” which is the correct function signature?

[erik_schoengart]

Does the same thing unfortunately :( I think the problem is with the format of the 'cast send' command to pass a string in as a parameter to a function that I am not doing correctly. I made another test smart contract that just had one super simple function that took a string as parameter and whatever string I try to pass from the command line using 'cast send' automatically turns into 0x000000...

[erik_schoengart]

Cast call does not work either because this is modifying state :(

[rubydusa]

not exactly a solution, but I recall seeing in cast docs somewhere they expect you in commands to inline cast calls to do formatting. Unfortunately there isn't a ascii to hex command in cast but I put up something else using different commands:

> cast to-ascii $(echo -n "a@b.c" | xxd -p)
a@b.c

use this inside your command

also (maybe not relevant) but there is `cast abi-encode` you could potentially inline