如何使用最新的 polkadot-js 和基板合约节点查询合约信息？

Question

I've been unable to query my existing contract recently due to Unable to create Enum via index 128, in Alive, Tombstone when using api.query.contracts.contractInfoOf . I get this error both on the command line and in the polkadot-js apps explorer.

These are the steps I took:

1. Deploy a contract with a salt
2. Retrieve the contract deployedAddress
3. Use contractInfoOf
4. const contractInfo = await api.query.contracts.contractInfoOf(deployedAddress);

I've tried downgrading ink! to 3.0-rc5 , 3.0-rc4 , 3.0-rc3 and then compiling but it doesn't seem to make any difference. Whenever my contract is built it references rc6 at the top:

{"metadataVersion":"0.1.0","source":{"hash":"0x...","language":"ink! 3.0.0-rc6","compiler":"rustc 1.58.0-nightly",

Which suggests its ignoring my .toml and using rc6 to compile the contract.

I changed my cargo-contract version to 0.14 but that causes polkadot-js to fail at reading the contract abi.

I've tried using the substrate-contracts-node using the latest commit from master and also using the v0.1.0 release. Same error in both cases.

> rustup info

stable-x86_64-unknown-linux-gnu (default)
rustc 1.56.1 (59eed8a2a 2021-11-01)

There are more details in an issue on polkadot-js .

Any pointers on how to get a working setup would be very helpful!

Answer 1

The problem here was substrate-contracts-node using an old version of the metadata .

I was able to check out the repo before the metadata merge was reverted and build locally ( cargo build ).

So checkout 8d91b8e to get it the node to work with versions 7.7.1 and 6.6.1 of polkadot-js packages.

> git checkout 8d91b8e578065a7c06433cbd41ac059bf478a0bd
> cargo build
> ./target/debug/substrate-contracts-node --dev --tmp --version
substrate-contracts-node 0.1.0-8d91b8e-x86_64-linux-gnu