Questions tagged [ink]
eDSL to write smart contracts in Rust for blockchains built on the Substrate framework
55
questions with no upvoted or accepted answers
6
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answers
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views
What are the size limits of contract storage in ink?
Whilst reading the docs for ink I came across this warning:
CAUTION
If any type exhibiting Packed layout gets large enough (an ever-growing Vec might be a prime candidate for this), it will break ...
- 549
5
votes
0
answers
30
views
Cross-contract call failed with TransferFailed
After instantiating a contract using the CreateBuilder as shown here.
If I then try to call the contract using CallBuilder as shown here and use #[ink(message, payable)] in the callee message of the ...
- 2,292
4
votes
0
answers
42
views
Migration from legacy HashMap to Mapping
I have following code where I want to use with new Mapping (now it works but with legacy HashMap). I think that the source code below is self-explanatory:
self.balances
.entry(caller)
...
- 739
4
votes
0
answers
74
views
Upload and Deploy code in Rococo Contract (Testnet) and Shibuya Testnet not working?
I am experimenting with cross contract with a combination of psp22 and psp37 in my project. But there is a problem when uploading json file and wasm file and deploying. It just shows the "...
3
votes
0
answers
25
views
How to use enum with associated value(s) in ink smart contract
I have an ink smart contract message that takes an enum as argument. The code is shown below;
#[derive(Encode, Decode)]
#[cfg_attr(
feature = "std",
derive(Debug, PartialEq, Eq, ...
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3
votes
0
answers
28
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 ...
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3
votes
0
answers
45
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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
0
answers
29
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ink dapp asking to sign transactions everytime i reload
so i am building a dapp with ink
it has messages to get data and put data
and on FE when i logged in with the polkadot-js extension wallet
everytime i reload the page it asks me to sign the ...
- 133
3
votes
0
answers
57
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, ...
- 61
3
votes
1
answer
57
views
duplicate lang item in crate `ink_env` - astar-frame/astar
Trying to build Astar shibuya-runtime crate is failing after adding the ink_env dependency an astar-frame chain-extension.
Here are the changes to both Astar and astar-frame.
Run: cargo build --...
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3
votes
1
answer
39
views
A function returning Result::Error will not revert the execution
I used the example Flipper, and changed the code like this:
#[ink(message)]
pub fn flip(&mut self) -> Result<(), Error> {
self.value = !self.value;
return ...
- 137
3
votes
1
answer
44
views
No caller has been set
I write tests for my smart contract and got this error:
no caller has been set
The error comes from: ink_engine-4.2.0/src/ext.rs:325:14. In function that I want to write tests I have following line:
...
- 739
3
votes
0
answers
29
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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::...
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3
votes
0
answers
30
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 ...
- 83
3
votes
0
answers
65
views
Difference between "ink_primitives::AccountId" and just default "AccountId" type
I try to solve Rust's error that I included below:
= note: expected struct `Mapping<ink::ink_primitives::AccountId, u128>`
found reference `&Mapping<ink::ink_primitives::...
- 739
3
votes
0
answers
56
views
Cargo-contract forcibly calls nightly-2022-06-30 regardless of specified toolchain
I am experiencing an issue when using cargo-contract (version 1.5.1) to build a project (command: cargo +nightly contract build). The specified toolchain is not being recognized, and the process is ...
- 31
2
votes
0
answers
55
views
Deploy ink! contracts with unified accounts
I have a chain similar to mentioned in this question, where I'm trying to deploy ink! smart contracts. I'm setting my Environment like this:
use ink::env::{Environment, DefaultEnvironment};
use ...
- 382
2
votes
0
answers
37
views
How to upload the same ink! smart contract to a different code hash?
I've written this ink! quickstart script that I can repeatedly call to run these steps to flood my local testnet with instances of Flipper contracts:
Kills an existing substrate-contracts-node ...
- 2,292
2
votes
0
answers
29
views
Error Type { registry: TypeRegistry {}, initialU8aLength: 6 } when try to query ink! smart contract by @polkadotjs/api-contract
My code:
const main = async() => {
//Get wasm
// This file wasm I already build through "cargo contract build"
let wasm = fs.readFileSync("../../res/incrementer.wasm&...
- 616
2
votes
1
answer
113
views
How can I decode this error message {"ok":{"flags":["Revert"],"data":"0x000110"}}?
I'm using polkadotjs to call my ink! smart contracts and I seem to be having trouble with calls that require parameters. For the call below I am getting the revert flag {"ok":{"flags&...
2
votes
1
answer
62
views
Block_timestamp in contract's e2e_tests
Is it possible to get / set block_timestamp in contract's e2e-tests?
Like ink::env::test::set_block_timestamp.
- 2,598
1
vote
0
answers
19
views
I am having issues with implementing swap fees on transfer for DEX
Below is my lib.rs file for the token contract and it uses the Cardinal Cryptography PSP22 sample at https://github.com/Cardinal-Cryptography/PSP22
I am trying to implement swap for the transfer taxes ...
1
vote
0
answers
9
views
What happens to smart contracts when breaking changes are introduced to ink?
I've seen breaking changes mentioned in this issue for upgrading set_code_hash.
This got me thinking, what happens to existing contracts when a breaking change to ink is introduced?
For example, we're ...
- 549
1
vote
0
answers
36
views
Substrate account abstraction
I'm interested in learning about account abstraction in Substrate using Ink!. As far as I understand, smart contracts in Substrate cannot store keys or sign transactions.
However, I came across this ...
- 11
1
vote
0
answers
27
views
I want to clone a stable coin project in Rust but having a lot of errors
I am facing too much errors when I clone this project, I want to create a stable coin in substrate I found this repository https://github.com/1010adigupta/ink-Stable-Coin
But after installing rust ...
- 21
1
vote
0
answers
14
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 ...
- 442
1
vote
1
answer
23
views
How to send fix amount of balance to contract address
I'm working on a smart contract where I need to send a balance from a user account to the contract address. The amount to be sent is fixed and hardcoded in the contract. I have tried to figure out ...
- 118
1
vote
0
answers
20
views
How do I scale decode a Vec<u8> within an ink smart contract?
This is within my smart contract's module:
// THIS IS BEING USED: use ink::prelude::vec::Vec;
#[ink(message)]
pub fn test_encoding(&mut self) -> Result<u32, ...
1
vote
0
answers
16
views
What is the principle of Code Hash generation in ink?
I come from ChainIDE, and I have some confusion regarding the generation mechanism of code hash. I tried to compile Flipper and PSP22 in different folders, but I obtained different code hashes.
cargo ...
- 11
1
vote
0
answers
40
views
What could be the reason for my contract throwing "ContractTrapped"? Other cross contract calls are successful, but not in this code
The force_vote function in voting contract places a call to a different contract easily, but when I want to get some data from the other contract as well, it fails. Similarly in the function where the ...
- 31
1
vote
0
answers
22
views
How to change the gas cost in ink! e2e tests
I want to be able to adjust the gas cost used in specific ink! end-to-end (e2e) tests, but my attempts to do so have consistently resulted in a return value of zero when using the weight_to_fee ...
1
vote
0
answers
19
views
error build_call
#[ink(message)]
pub fn get_flip2_buill_call(&mut self, token_contract_address: AccountId, account_id: AccountId )-> i32 {
let my_return_value = build_call::<DefaultEnvironment>()
...
- 23
1
vote
0
answers
18
views
How to curl `ink!` contract storage?
I'm trying to use curl to query an ink contract's storage using the RPC of substrate. I've looked at the below question
How do I call the RPC method `contractInfoOf` using curl?
but it does not ...
- 549
1
vote
1
answer
26
views
I'm trying to access another contract's struct X in my contract. It is throwing error: panicked at 'Cross-contract call failed with Decode(Error)'
#![cfg_attr(not(feature = "std"), no_std, no_main)]
#[ink::contract]
mod arm {
use ink::prelude::vec::Vec;
#[derive(scale::Decode, scale::Encode)]
#[cfg_attr(
feature = ...
- 31
1
vote
1
answer
29
views
Need help in Ink e2e tests
I need help with that code. Can anyone pls help me out ??
mod p{
#[ink(storage)]
pub struct Foobar {
/// Stores a single `bool` value on the storage.
value: ...
1
vote
0
answers
18
views
e2e-tests We should find port before reader ends - ink! 4.2.1, rust 1.69, cargo contracts 3.0.1
I have the same problem and error message as described here: e2e-tests "We should find a port before the reader ends" for rust = 1.69 and cargo-contract-contract 3.0.1-unknown-x86_64-apple-...
- 11
1
vote
0
answers
22
views
How to resolve "mismatched types" error while ink_e2e test : expected String, found Vec<u8>
I am working with ink_e2e testing framework in ink smart contract, and I have encountered an error message that's a bit confusing. The error says: mismatched types - expected String, found Vec<u8&...
- 442
1
vote
1
answer
37
views
Is there an `OrderedMapping` storage type available in ink?
I'm new to ink! smart contracts, and trying to figure out how to set up my storage. I have a basic DAO. The DAO has members, and each member has a score (a u128) associated. So far a mapping sounds ...
- 1,125
1
vote
0
answers
23
views
Why can't I still directly call method in sub-contract of basic-contract-caller example after removing method that allows calling from main contract?
In this commit of this Pull Request I'm using a modified version of this ink! basic-contract-caller example where there is a BasicContractCaller main contract and a OtherContract sub-contract.
To run ...
- 2,292
0
votes
0
answers
17
views
How to do cross contract e2e tests on ink?
I have made a contract in ink! that build fine, and I am trying to make e2e tests. I don't manage to do this even by using the examples in ink! repertory.
My contract is a swap contract: it takes the ...
0
votes
0
answers
24
views
can cross contract calls be done across different polkadot chains?
I have two smart contracts, one for off-chain computations (Phat Contracts) and the other from Ink which will be deployed on the Astar network. I want to access data from the phat contracts, how do I ...
- 23
0
votes
0
answers
18
views
How do i run ```npx @727-ventures/typechain-compiler --config typechain.config.json``` for a nightly version
So i am running this command npx @727-ventures/typechain-compiler --config typechain.config.json to get to compile so i can write my test file for my contracts and use the typechain gotten. This is ...
- 21
0
votes
0
answers
53
views
could not compile `proc-macro2` (lib) due to 3 previous errors
I run cargo install contracts-node --git https://github.com/paritytech/substrate-contracts-node.git --tag v0.23.0 --force --locked and then got an error, version of the proc-macro2 library is ...
- 1
0
votes
1
answer
17
views
Writing Test in ink! smart contract
I have two contract nft_contract and staking_contract. I want to write test for staking_contract but while staking I need to mint nft and approve, then only I can use it to stake. How can this be done?...
- 1,208
0
votes
0
answers
66
views
Smoldot + polkadotjs: UnusedProofEntry when attempting to query a contract
I'm running a custom smoldot node, synced with a hosted bootnode, in a react-based application and attempting to interact with an ink! contract deployed to the network. My fork of smoldot accounts for ...
- 527
0
votes
0
answers
20
views
Encountering Error "Encountered Unknown Ink! attribute argument: path" in Ink! Smart Contract
I am working on an Ink! smart contract in Rust, and I've encountered an error that I'm having trouble resolving. I followed a solution from a source [provide link here if applicable], but the problem ...
- 442
0
votes
0
answers
40
views
How to write upgradable smart contracts in rust (changing the storage)?
I am writing a smart contract in Rust using the Openbrush library. I am using version 3.0.0.
pub const STORAGE_KEY: u32 = openbrush::storage_unique_key!(metaData);
#[openbrush::upgradeable_storage(...
0
votes
1
answer
58
views
Failing to run ink! e2e tests
I am trying to run e2e tests but getting the following error. Example of running the e2e tests of the flipper contract:
running 4 tests
test flipper::tests::it_works ... ok
test flipper::tests::...
- 623
0
votes
0
answers
22
views
Selling token to any third party tools
When user stake his NFT, then he earns certain amount of $EGGS token which is in-game currency. He can to sell those token to third party tools. How to implement selling token to any third party tools ...
- 1,208
0
votes
0
answers
33
views
Event on factory can't be emitted
I'm working on an an ink! contract and trying to establish a factory contract to enable indexing for each deployment using a subquery subgraph. For this purpose, we emit an event whenever a successful ...
