Factory

[winter crypt]

I am trying to create a factory contract that will create new contract and store addresses of created accounts.

There was discussion here about this topic https://discord.com/channels/484437221055922177/1123378515207786606, but deploy method of contract can't accept public key from contract argument(only constant), which make it quite useless.

I have tried to set verification key of new contact directly with following code(by the way there is no way to pass data, as it is string. How it supposed to be used?)

  @method async deploySubject(newAddress: PublicKey, verificationKey: Field) {
    const subject = new Subject(newAddress);

    AccountUpdate.create(newAddress).account.verificationKey.set({
      data: '<data from Subject.compile>',
      hash: verificationKey,
    });
  }

Call it with

    const txn = await Mina.transaction(senderAccount, async () => {
      await zkApp.deploySubject(subject, subjectComp.verificationKey.hash);
      AccountUpdate.fundNewAccount(senderAccount);
    });

    await txn.prove();
    await txn.sign([senderKey, subjectPrivateKey]).send();

But it gives we following error

Transaction failed with errors:
    - [[],[["Cancelled"]],[["Update_not_permitted_verification_key"]],[["Cancelled"]]]

Any idea on how to fix it? Or may be there is different approach to solve factory problem?

[brittle cairn]

You can check out this example https://github.com/boray/o1js-factory-example

[brittle cairn]

The error indicates that an account with the same address already exists. If you want to do that, you should set the permissions accordingly.

[winter crypt]

Thanks for code example.

Problem was with account update, change create -> createSigned fixed the error. Thanks

[winter crypt]

@brittle cairn Is there is a way to call init somehow for contract deployed via factory?

Tried call it in deployment method, and explicitly, but get "Update_not_permitted_app_state" error

[minor spoke]

Init means that you're setting the initial account state. You can do it directly in your method as in this example:

const state = [ // 8 Fields
      name,
      ...MetadataParams.toFields(metadataParams),
      ...owner.toFields(),
      new NFTparams({
        price,
        version: UInt32.from(1),
      }).pack(),
    ];
    update.body.update.appState = state.map((field) => ({
      isSome: Bool(true),
      value: field,
    }));

https://github.com/dfstio/minanft-lib/blob/master/src/contract-v2/nft.ts#L294

[winter crypt]

I have done same things, but there was some non-related errors, that got me confused. Now everything is working. Thanks.