Questions tagged [contracts]
The contracts tag has no usage guidance.
43
questions
0
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56
views
contracts-ui cannot connect to local node
When following ink getting started tutorial at https://use.ink/getting-started/running-substrate I am stuck at one of the steps.
After starting contracts node in dev mode with the following command:
...
- 85
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
0
votes
1
answer
34
views
Deriving Contract Reference from `ink::trait_definition`
Is it possible to create a Contract Reference to perform a Cross-Contract call from ink::trait_definition?
If it is, how can I do so?
If it is not, why it is not possible? It seems strange that we can ...
- 73
5
votes
1
answer
104
views
After doing runtime upgrade getting contract not found in substrate contracts ui
I am doing runtime upgrade of substrate blockchain from 0.9.36 --> 0.9.37 --->0.9.43 . And i have some contracts deployed on the running blockchain which is running on 36 version . After doing ...
- 329
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48
views
Extrinsic Read Smartcontract Data
I would try to replicate the Extrinsics that is thrown when using this
This is the ABI of my smart contract
{
"args": [
{
"label": "code",
...
- 33
1
vote
1
answer
30
views
How to entirely clear a pallet storage on a living chain?
Would it be possible to clear a pallet storage with a call on a live chain ?
Precisely I would like to remove all contracts and code hash existing on my chain (as sudo).
- 13
3
votes
1
answer
59
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 ...
- 549
0
votes
1
answer
8
views
cxxbridge error on cargo contract
I was developing things yesterday and during that development I had briefly a file named "asset_extension.rs", that I renamed later. I finished that development, tests passed and everyone ...
- 294
1
vote
1
answer
28
views
How to get and modify cross-chain asset in contract?
I am preparing to create a smart-contract on Astar using ink! programming language. The contract's main logic involves modifying the cross-chain asset USDT on the statemint chain. After going through ...
- 11
5
votes
1
answer
64
views
How do I upgrade an ink contract with storage changes?
Let's say I have a simple/contrived ink contract:
#[ink(storage)
pub struct MyContract {
a: u8,
b: u8,
}
Now let's say it's in production and a == 1 and b == 2.
I've done some work and ...
- 549
3
votes
1
answer
57
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 ...
- 31
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0
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74
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?
- 509
2
votes
1
answer
63
views
How to run ink! e2e tests in GitHub CI
The directory structure for my project is something like this
ink
- contract
runtime
node
and so on
I want to run the contract ink/contract e2e tests in GitHub CI using my own node instead of the ...
- 382
2
votes
1
answer
92
views
What is this strange balance transfer that occurs during utility.batch?
I'm putting a single transaction into a batch utility call with zero value. The batch extrinsic is shown below. Each time I submit the batch transaction, a huge value is submitted to an unknown ...
- 1,462
3
votes
1
answer
72
views
What's the difference between `paymentInfo` and `gasRequired`?
In polkadotJS there are two ways of getting gas estimates (specifically WeightV2) before you send a contract transaction.
The first uses query and returns a gasRequired value in the result.
const ...
- 1,462
5
votes
2
answers
76
views
Is it possible to use ink! with Ethereum-style accounts?
Wondering if anyone knows whether ink! supports AccountIds which are ethereum-style accounts? Let's assume this would be a chain with a Unified Accounts setup, similar to Moonbeam. In specific, we ...
- 530
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1
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27
views
Auto-upload Contracts To UI OR Pre-Populate Dropzone In Modal For Adding Contracts on Polkadot-JS/apps
We are using a clone of the Polkadot-JS/apps. Our users will need to have several contracts loaded to the UI in order to use the apps. We want our users to be able to add an existing contract to their ...
- 269
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2
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155
views
StorageDepositLimitExhausted error when trying to deploy contract on Rococo
I got this error when I was trying to deploy my ink! smart contract on Rococo:
**StorageDepositLimitExhausted
More storage was created than allowed by the storage deposit limit.**
What might be the ...
- 11
1
vote
2
answers
98
views
How to fix Contract.outOfGas error
I'm trying to call a message on my ink! v3 smart contract using the polkadot-js ContractPromise but I'm getting the error:
system.ExtrinsicFailed::ExtrinsicFailed:: contracts.OutOfGas
This is how I'm ...
- 561
1
vote
2
answers
74
views
While executing contracts functions getting out of gas error
I have deployed a wasm smart contract on chain using version polkadot-v0.9.36, after deploying the contract when I tried to execute its function i got error out of gas as shown below.
When I tried ...
- 975
2
votes
1
answer
48
views
Is it possible to prove that an account deployed contract A from within contract B without the account being stored in contract A?
Account A deploys Contract A. Account A then calls Contract B function register, passing the address of Contract A. Is it possible to prove that Account A deployed Contract A from within the register ...
- 1,462
0
votes
1
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60
views
Is it possible to sign a message using the private key of a contract account?
For example, I have deployed an ink! contract via polkadot apps.
Is it possible to obtain the private key of the contract account and sign an arbitrary message?
- 1,462
2
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1
answer
30
views
What exactly is the "data" field required as arg while instantiating an ink contract?
The image below shows a decoded finalized transaction that deploys a flipper contract on my local substrate network.
I am not sure what the data field represents here.
- 304
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2
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101
views
Balance got Reserved while deploying wasm contracts?
i am using pallet-contracts in my substrate based chain when i am deploying the wasm smart-contract some balance is getting reserved.How can i stop this i don't want to reserve the balance,Or is there ...
- 364
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1
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50
views
How do we resolve the InvalidScheduleVersion error?
From the contracts pallet:
/// A new schedule must have a greater version than the current one.
InvalidScheduleVersion,
The context of this error is sending batch transactions from ...
- 1,462
3
votes
2
answers
231
views
How can I generate a random seed now that self.env.random() is removed in ink?
We were using self.env.random() in our contract to generate a random number. The calling user's AccountId was used to give additional entropy to the random generation.
fn get_random_number(&self, ...
- 1,462
2
votes
1
answer
63
views
How do I query the state of a contract at a given block number given the deprecation of contracts_getStorage?
The previous answer is now incorrect due to the deprecation of the RPCs.
How do we query the historic contract state now?
In the PR comment it states:
The high level contracts API in polkadot.js ...
- 1,462
2
votes
1
answer
151
views
Need Help Understanding ink! Contract Storage And Data Access
There are some aspects of ink! contract storage and data access that I cannot find the answers to in the documentation or by experimentation. Here are my questions...
Is it true that there can be ...
- 269
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157
views
How do we work with polkadot-js enums in TypeScript?
I used typegen to generate my types from definitions.
Definition
Person: {
status: 'Status',
balance: 'u128',
},
Status: {
_enum: ['Active',...
- 1,462
2
votes
1
answer
48
views
The crate "pallet-contracts-rpc" does not exists for the branch "polkadot-v0.9.31". Is there any replacement?
Branch(polkadot-v0.9.31)
https://github.com/paritytech/substrate/tree/polkadot-v0.9.31/frame/contracts
Branch(polkadot-v0.9.30)
https://github.com/paritytech/substrate/tree/polkadot-v0.9.30/frame/...
- 149
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1
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77
views
PSP34Mintable::mint() as payable function
I'm using PSP34 from openbrush in ink! contract and want to override mint() function that comes with PSP34Mintable trait.
Since this contract should accept payments for the mint() call, a payable is ...
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3
votes
1
answer
153
views
Error when compiling a contract using the XCM chain extension
I'm trying to implement this xcm chain extension mvp to send a XCM call from a simple contract.
The problem i'm facing is when i try to compile the contract with the given Cargo.toml, i get the ...
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vote
1
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68
views
ERROR: Your wasm-opt version is 91, but we require a version >= 99
I am doing the prepare your first contract tutorial on subtrate and i am getting the following error ERROR: Your wasm-opt version is 91, but we require a version >= 99.Can anyone please tell me how ...
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3
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179
views
error[E0405]: cannot find trait `Trait` in crate pallet_contracts
I am performing the (add the contracts pallet to a runtime) substrate tutorial and I am getting this error
error[E0405]: cannot find trait Trait in crate pallet_contracts
--> runtime/src/lib.rs:279:...
1
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1
answer
27
views
AssemblyScript Contracts with Javascript Standard Library
I am trying to implement a non-Rust contract using WASM.. Can anyone provide an example, please, of a small contract which returns the balance of an account, completely written in TypeScript / ...
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votes
1
answer
165
views
Emiting events does not work with cross contract calling
When using cross contract calling on another contract which also emits
events the events of the original contract do not work anymore.
I get the following error.
error[E0283]: type annotations needed
...
- 491
2
votes
1
answer
27
views
Is it feasible to modify the contracts pallet to integrate it into a non-substrate rust-based blockchain?
Is it feasible to modify the contracts pallet to integrate it into a non-substrate rust-based blockchain? Say one that runs on Tendermint.
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1
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248
views
How do I call the RPC method `contractInfoOf` using curl?
The docs state that the RPC comes with a few defaultRPCs and then links to polkadotJS documentation on the available API calls. This doesn't help me if I want to call a method using curl.
Does anyone ...
- 1,462
1
vote
2
answers
141
views
How do I get the code hash of a smart contract using Polkadot{.js} API?
I know polkadot{.js} has an API to access contract storage here:
https://polkadot.js.org/docs/substrate/storage#contracts
How do I get the code hash via the account?
- 8,130
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162
views
How to call runtime functions from a contract
A chain_extension is one way to call into the runtime from a smart contract on the contracts pallet.
What other methods exist, and why might you use them instead of the extension pattern?
- 1,707
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2
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101
views
Why can't I decode an extrinsic created with the contracts tab in Polkadot JS apps?
I am running the substrate-contracts-node and using the contracts UI to interact with it in Polkadot JS Apps. The contract call is failing when I try using the UI, although the same call works from a ...
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1
answer
343
views
How to get an ink! contract's AccountId in unit tests?
From what I understand from the docs, every contract gets its own AccountId. But in the contract-transfer tests, I'm getting the same AccountId from both accounts.alice and contract_id().
I modified ...
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4
votes
2
answers
125
views
Correct way to use dynamic sized types in chain extension
I'm writing chain extensions for my pallets and I have a few functions that require dynamic sized types, for example Vec<u8> for metadata and Vec<u64> for a list of asset ids.
The way I am ...
- 115