Questions tagged [smart-contract]
Everything smart contract related, either WASM or EVM based.
287
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14
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Getting Wrong ABI for the openbrush contracts
openbrush Library
when I am building the openbrush examples i am getting wrong ABI for the input of all the functions that are in the libraray.
Can anyone tell why it is happening.
e.g.
This is in ...
0
votes
1
answer
20
views
Creation of a smart contract in contracts pallet
I need to create a smart contract using contracts pallet. I look at the source code of the contracts pallet and see:
pub fn upload_code(
origin: OriginFor<T>,
code: Vec<u8>,
...
- 769
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0
answers
10
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openbrush::implementation(PSP34Ownable) not implemented!
when building I get this error:
error: custom attribute panicked |
4 | #[openbrush::implementation(PSP34, PSP34Ownable, PSP34Mintable, PSP34Enumerable, PSP34Metadata)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...
0
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0
answers
10
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Decimals in the psp22 contract
What is the role of decimals in the PSP22 contract ??
as by default Balance data-type will automatically take the number of decimal places that we have set in the chain, so what is the role of ...
1
vote
1
answer
61
views
error: System.ExtrinsicFailed: NoProvider when deploying smart contract
I just installed pallet-contracts on my Frontier node.
From the Polkadot js app interface, I can send transactions with tokens without problems, but if I try to deploy a new smart contract (inside ...
0
votes
1
answer
19
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How Can I Scale Token Distribution in an INK! Custody Smart Contract Using OpenBrush?
community! I am a beginner in INK! and I am developing a custody contract using OpenBrush. This contract receives token (X) as collateral for another token (Y) contract. At regular intervals, the ...
0
votes
1
answer
36
views
How can I properly use scale::Decode to get consistent results?
I'm trying to process a result from a contract call using what's here. It works totally fine when I'm trying to get a u32 result from an ink_e2e test. E.g.
// -- Snip --
let number_of_items = client
...
- 143
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20
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Gas Limit is over estimated for dex contract
i've been working with the dex smart contracts. Whenever i try to use the add liquidity function of the contract ,it has been calculating the gas limit of 1.3 billion in frontier1.1.0. In frontier v1....
- 815
2
votes
1
answer
38
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How to impl FindAuthor<H160> with Babe
I want add pallet-evm in my substrate node. and my substrate node use Babe instead of Aura. How can I Impl FindAuthor whih Babe ?
this is the example of Aura. I want to impl it with Babe
pub struct ...
- 21
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1
answer
27
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getting CouldNotReadInput while creating cross invocation call when passing Vec<u8> as argument
This is how i am trying to invoke call.. where Bytes is Vec<u8>
let res = build_call::<DefaultEnvironment>()
.call(handler_acc_id)
.exec_input(
...
1
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0
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14
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How To Increase Static Buffer Size in Ink 5.0 Contract
In Ink 5.0, the Static Buffer size can be increased. Does anyone know HOW to do that? This PR mentions several methods they were considering: https://github.com/paritytech/ink/pull/1869
I tried the ...
- 359
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15
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Tool for Automatic Generation of Contract Wrapper Code from Ink Metadata
I am currently exploring ways to streamline the process of interacting with contracts on the Pallet Contracts. One challenge I've encountered is the need to manually write wrapper code for contracts ...
0
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1
answer
46
views
duplicate lang item in crate `core`
Unable to build ink! smart contract
My command:
cargo contract build --release
Issue:
attempted to define built-in macro more than once
/Users/xxx/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/...
- 718
2
votes
1
answer
34
views
Are web3.js & ethers.js compatible with ink! smart contracts?
I am pretty new to Substrate and wonder if we can communicate with ink! smart contracts via established libraries such as web3.js or ethers.js? Is the underlying RPC-based communication the same?
- 135
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0
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54
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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 ...
- 815
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11
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How to call function with the same name but from different trait inside ink-e2e-test
Let's say I have the following impl of my Contract:
impl Contract{
#[ink(message)]
pub fn my_fun(&self);
}
impl MyTrait1 for Contract {
#[ink(message)]
pub fn my_fun(&self);
}
...
- 75
0
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0
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65
views
How to execute smart contract from offchain-worker?
Would it be possible to execute smart contract call from an offchain-worker, either using ink! or pallet-contracts?
Can someone please help me to provide the solution? is there any example?
- 557
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24
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contracts.ContractReverted: The contract ran to completion but decided to revert its storage changes. Ink nft smart contract
I am trying to call the set_base_uri function and the mint_next function of the ink! NFT smart contract. When calling from polkadot-ui it is working correctly but when I call it using nextjs it gives ...
0
votes
1
answer
77
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 ...
1
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0
answers
13
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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 ...
- 579
0
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0
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15
views
How to test smart contract timestamp dependent behavior?
how can I test block_timestamp-dependent smart contract behavior?
The substrate contact node doesn't allow block_timestamp manipulations.
For context, in the EVM ecosystem, one can use hardhat helpers ...
- 75
2
votes
1
answer
60
views
How to iterate over a vector in ink smart contract
I initialized a vector in ink smart contract like this:
bidders: Vec<AccountId>
What is the best way to iterate over the vector?
- 341
2
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0
answers
17
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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
1
vote
1
answer
68
views
How do you add mapping of struct array in ink?
How to create a mapping of a vector of struct, also how to assign value and get the value in this data structure. I didn't find the documentation on the official doc. Is there any downside to using ...
- 341
1
vote
1
answer
41
views
is there any ways to automatically trigger ink smart contract based on certain conditions?
How to auto-execute smart contract based on certain conditions ?
For example:
The contract period has exceeded the deadline -> auto-execute pay without interfering from user
- 718
2
votes
1
answer
32
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 ...
- 477
2
votes
1
answer
30
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 ...
- 128
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votes
1
answer
45
views
Can we call pallet function somehow from Ink smart contract?
Can we call one of the pallet functions somehow, from Ink smart contract?
- 341
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1
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18
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Can I send native token in the contract just after deployment by calling the constructor on Ink smart contract?
Is it possible to transmit the native token to the contract immediately after deployment by invoking the constructor on the Ink smart contract?
- 341
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1
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98
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How can I send a native token from a contract to an externally owned account in an ink smart contract?
How can I send native tokens from a contract address to a user/externally owned account using an Ink smart contract?
- 341
1
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0
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22
views
"ContractTrapped" Error even with successful cross-contract call
let result_call = ink::env::call::build_call::<Environment>()
.call(self.escrow_address)
.gas_limit(0)
.transferred_value(0)
...
- 11
1
vote
0
answers
44
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
3
votes
1
answer
55
views
Can we mint native token from root account on Smart contract?
After building a chain from Substrate node template there are some initial native token balances in the predefined accounts. Can I mint the native token on a smart contract level using the root ...
- 341
1
vote
0
answers
21
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
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0
answers
28
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 ...
- 579
1
vote
1
answer
27
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
2
votes
1
answer
47
views
How to restrict ink! contracts code upgrade?
What is the best way to disable ink! smart contracts code upgradability for a class of contracts? Below I describe what I need it for, just in case. Thank you!
For my use case, I need my pallet to ...
- 105
1
vote
1
answer
32
views
Can contract create and control a proxy account?
Can a smart contract create and control a proxy account?
If yes, how can I create a proxy account for a contract and how can I send transactions from my contract on behalf of my contract's proxy ...
- 75
0
votes
0
answers
24
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 ...
- 477
0
votes
0
answers
19
views
Could not decode `ContractInfo::storage_item_deposit
When I am doing runtime-upgrade from polkadot-v0.9.38 to polkadot-v0.9.39 .I am getting one issue of smart contract in my terminal
2023-09-18 11:36:25 Corrupted state at `[67, 66, 25, 62, 73, 111, ...
- 815
1
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1
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60
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Contract Trapped on Single Message
I am getting a Contract Trapped error on one specific message in my ink contract. I tried putting overflow-checks = false into the Cargo.toml. That made no difference. This is the first time I have ...
- 359
4
votes
0
answers
36
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
1
vote
1
answer
120
views
how to call smart contract function in custom pallet?
Is there any way to call ink! smart contract function in substrate custom pallet?
We've found this answer where bare_call function is based on older version of contract_pallet.
// This ends up calling ...
- 1,253
1
vote
1
answer
29
views
Call ink! smart contracts from hardware devices that use embedded rust
What would be the best rust crate or c++ libraries to call ink! smart contracts from hardware devices that use embedded rust?
- 149
1
vote
1
answer
80
views
Cross-Contract Calls and Events don't work (ink 4.2.1)
I have replicate this error using the MultiContractCaller from the ink-examples
In the multi_contract_caller we have a FakeEvent.
#[ink(event)]
pub struct FakeEvent {
account_id: AccountId,
}
...
- 149
3
votes
1
answer
133
views
What is a Storage Deposit?
When developing ink smart contracts, I've often seen a Storage Deposit charge. What is this, and how does it relate to contract storage?
My guess is it's a charge related to the size of the contract's ...
- 579
1
vote
0
answers
25
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&...
- 477
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votes
0
answers
25
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 ...
- 1,253
0
votes
1
answer
27
views
Error in deploying call_runtime contract from ink!
I am running call_runtime from ink. It builds successfully, but when trying to upload contract, It gives system.ExtrinsicFailed contracts.CodeRejected error. Someone please advice what I am doing ...
- 1,253
1
vote
1
answer
28
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How to write integration test cases for ink?
I am new to substrate and ink, while following ink documentation I got to the testing part and want to write integration tests. Can someone help me with it or point to the documentation or resources ...