Unanswered Questions
75 questions with no upvoted or accepted answers
7
votes
0
answers
96
views
Why do clients have to hardcode the extra types in the registry?
Context: I'm experimenting with an H160-address based substrate and I'm doing it from scratch (it's not a moon* or frontier template fork).
It's reasonably trivial to make changes to the substrate ...
- 158
5
votes
0
answers
98
views
I want to use Parity SCALE codec in Solidity? Is there any implementation of scale codec to decode bytes?
I want to decode bytes on the Solidity side that was decoded with scale codec.
Is the any implementation of scale codec (decode) on the Solidity side?
- 2,376
4
votes
0
answers
37
views
Is there a way to instantiate a contract from code_hash without ContractRef
From the documentation, we have 2 ways of instantiating a contract from a code_hash, but both require a ContractRef.
In order to obtain ContractRef we have to import the contract crate as a dependency ...
- 76
4
votes
0
answers
108
views
Accessing On-Chain Data In an Off-Chain Worker
I am looking to aggregate On-Chain data in an Off-Chain Worker, e.g. summing transaction fees included in blocks from the last 24 hrs. This is listed as one of the main use cases for Off-Chain Workers....
- 1,097
3
votes
0
answers
39
views
Why is the index of a pallet a u32(usize) instead of u8 when queried?
I'm implementing a flow where I first ask what index a pallet has with the QueryPallet xcm instruction, and then construct a call to use with Transact.
I see that to construct manually an encoded call ...
3
votes
0
answers
27
views
Access protected API from off-chain worker
Is it possible to access a protected API from an off-chain worker, e.g. using an API Key? Hard coding the API Key would be possible, but that's obviously a security risk. Is there a safe mechanism to ...
- 189
3
votes
0
answers
53
views
After using set_code_hash to upgrade contract, when decode on the new Storage，why there wont has error of "Not enough data to fill buffer"
I'm learning how to upgrade ink! contract，and have some question：
Eg：old contractA, storage define is
#[ink(storage)
pub struct MyContract {
a: u32,
}
new contractB，storage define is
#[ink(...
- 31
3
votes
1
answer
71
views
Can we define ink_e2e tests outside of contracts module?
devs. I am writing the e2e tests for my smart contracts using ink_e2e
In contracts, I define the e2e-tests like this.
#[openbrush::contract]
pub mod controller {
...
#[cfg(all(test, ...
CommunityBot
- 1
3
votes
1
answer
89
views
Build the data bytes to query a contract with the api state_call
I would like to use the rpc call to query a contract.
I try to use the method "call" from the endpoint "state" with the first parameter "ContractsApi_call" but I am not ...
CommunityBot
- 1
3
votes
0
answers
33
views
How can I use complex structure in ink! version3
how can i use the complex structure(like Mapping<String, Vec<Map<String, String>>>) in ink!
#![cfg_attr(not(feature = "std"), no_std)]
use ink_lang as ink;
#[ink::...
- 374
3
votes
0
answers
32
views
How to migrate / backup & restore ink smart contract storage?
Is there a way to backup ink smart contract storage and later restore on another chain? Lets say we have chain with 3 validators and deployed smart contract containing certain information in its ...
- 374
2
votes
0
answers
90
views
How should I add offchain worker(OCW) in frontier when using AccountId20?
In order to add an offchain worker with using AccountId20 as the runtime account type I did following things.
add associated type type AuthorityId: AppCrypto<Self::Public, Self::Signature>; in ...
- 1,275
2
votes
0
answers
54
views
Deployment of contract and calling its function is taking too much fees
I have configured the transaction fees to be approximately 40. However, when deploying a smart contract on an EVM-compatible chain, the fees amount to be 2300, and when calling this function, the ...
- 847
2
votes
0
answers
17
views
How can I mint new token from ink smart contract calling pallet-balances function?
How can I mint a new native token (not a custom token) from the ink smart contract calling one of the functions from pallet-balances pallet?
- 341
2
votes
1
answer
35
views
How to Modify static buffer size for my ink smart contract to Resolving 'OutputBufferTooSmall' Error for Larger Vectors in ink smart contract
I'm facing an 'OutputBufferTooSmall' error in my [Language/Framework] code when working with larger vectors. I suspect this is related to the maximum allowed input/output sizes. I need guidance on how ...
CommunityBot
- 1