"str" type cannot be derived from Account or Address type

[atsoc1993]

Problem

Was trying to mint an ARC69 via smart contract, and include a property for "Owner", but could not represent the Address as a string, see "Owner" field in asset creation transaction below.

Attempted to pass in the account as a String type, but Account only excepts str or Bytes type, Address only supports str, Bytes, or Account type.

 

pokemon_creation_tx = itxn.AssetConfig(
            total=1,
            manager=Global.current_application_address,
            asset_name=available_pokemon_info.pokemon_name.native,
            unit_name='PK#' + unit_name_int_as_string,
            decimals=0,
            url= 'https://gateway.pinata.cloud/ipfs/' + available_pokemon_info.pokemon_ipfs_hash.native,
            note = (
                '{"standard": "arc69", "mime_type": "image/png", "properties": {'
                '"Type": "' + available_pokemon_info.pokemon_type.native + '", '
                '"Description": "' + available_pokemon_info.pokemon_description.native + '", '
                '"Level": "1", '
                '"Experience": "0", '
                '"Pokemon Number": "' + unit_name_int_as_string + '", '
                '"Owner": "' + ******* + '", '
                '"UID": "' + uid_as_string + '" }}' 
            ),
            fee=Global.min_txn_fee
        ).submit()

Solution

Allow decoding methods to str types, perhaps as Account.str attribute, or String.str attribute for string literals

While on the topic it is important to note there is no itoa support (Integer to Ascii), and currently we have to manually input this function into our programs to convert integers into strings:

    @subroutine
    def itoa(self, i: UInt64) -> Bytes:
        digits = Bytes(b"0123456789")
        radix = digits.length
        if i < radix:
            return digits[i]
        return self.itoa(i // radix) + digits[i % radix]