Questions tagged [polkadot-js]
Questions about the Polakdot JS API used to interact with Substrate based chains via JavaScript.
469
questions
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25
views
Property 'x' does not exist on type 'DecoratedRpc<"promise", RpcInterface>'
I have decorated custom RPC types for methods for polkadot-js-apps. I added them in ./packages/apps-config/src/api/spec/<chain-name>.ts, (then i also needed to add it into typesBundle.js, and ...
- 1,156
2
votes
1
answer
30
views
Ongoing error closing council motions in Polkadot JS (No execution details available for this proposal)
Ongoing problem with closing council motions related to treasury proposals. Here is what we have tried so far.
(1) At first, running an August 2022 version of the substrate kitchen sink node, the ...
- 173
1
vote
1
answer
85
views
Query AccountID of a pallet
The AccountID of a pallet is generated using the PalletID. (See the example from Treasury pallet)
I know is possible to query this pallet ID because is a constant, but my question is:
Is there a way ...
- 3,557
2
votes
2
answers
87
views
List of assets on Statemint
How do I get the list of all the assets that are present and their supply in Statemint?
Ideally either with Polkadot-JS api or py-substrate-interface.
- 121
0
votes
1
answer
34
views
Polkadot JS Apps UI - Treasury Proposals - Threshold met but proposals not listed as approved, unable to close
We are running a test chain based on the Substrate kitchen-sink node (code here: https://github.com/SparticleConcepts/Geode-Substrate) and using the https://polkadot.js.org/apps/ UI. We can
submit a ...
- 173
0
votes
1
answer
64
views
Verifying that this extracts the public key from my address, and not the private key
I'm using this code sample from here to extract my public key from my Dot address. I just want to verify that this is in fact converting my address to the public key.
const { decodeAddress } = require(...
- 123
2
votes
1
answer
93
views
How i convert Raw seed to Private Key in Substrate
I have a toy example : My keypair is ed25519
const seed = [
40, 246, 184, 64, 69, 145, 132, 131,
231, 66, 112, 159, 162, 36, 79, 197,
62, 54, 222, 103, 122, 190, 7, 143,
94, 190, ...
- 496
1
vote
1
answer
71
views
Question for api.call.transactionPaymentApi.queryInfo state call
I'm replacing api.rpc.payment.queryInfo with api.call.transactionPaymentApi.queryInfo in the crawler code of Polkastats block explorer but I want to ask about the second parameter len: is that the ...
1
vote
2
answers
74
views
Cant get extrinsic error from balances.sendTransfer extrinsic in polkadotJSAPI
I am doing error handling in an app using polkadotJSAPI 7.13.1
There are two ways to fetch info if an extrinsic suceeds or fails, the first one is via dispatchError in signAndSend like so
...
0
votes
0
answers
37
views
Get block number range for selected era in polkadot.js/api [duplicate]
I want to get block number range for selected era.
So, I want to get start, end block number for specific era.
How can I get them using polkadot.js/api? I can know from explorer, I need to get from ...
- 173
2
votes
1
answer
35
views
How to use polkadot{.js} substrate methods in itraction with kusama's gov2
Until now, to follow the referendums through the polkadot.js api, I was using storage methods that are part of the default Substrate runtime (located here: https://polkadot.js.org/docs/substrate/...
- 21
1
vote
1
answer
31
views
How to produce empty paramter in an Option?
In the screenshot below the OptionSelect is disabled, which produces info of an array of accounts rather than just one single.
How do you replicate this option when curating a call?
Using api.query....
- 1,156
1
vote
2
answers
39
views
Get all validators on the network, not just the active ones
I want to be able to get all the validators on the network, not just the active ones.
api.query.session.validators() only gets validators in the active set, how can I get every validator in existence?
- 143
1
vote
1
answer
66
views
How to get a list of all the smart contract account ids and WASM blobs on a parachain
I would like to figure out how to get a list of all the smart contracts account ids and WASM blobs that have been uploaded to a specific parachain, ideally into python using the substrate interface. ...
- 297
1
vote
1
answer
42
views
List of WSS endpoints for parachains (OR Is there a way to parse typescript code into JSON or other python readable object?)
I would like to programmatically get a list of all the WSS urls for parachains. I don't know if this is available anywhere, but I have not seen it. This source code has what I want, but it is in the ...
- 297
0
votes
1
answer
88
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',...
- 1,217
0
votes
2
answers
46
views
Ink Message must not be generic Warning
on writing to: &mut AccountId, it throws warning to use explicit lifetime name needed here.
#[ink(message)]
pub fn delegate(&mut self, to: &mut AccountId) {
let caller = ...
- 672
2
votes
1
answer
2k
views
Usage Error: Couldn't find the node_modules state file - running an install might help (findPackageLocation)
Prior to cloning the substrate-front-end-template repo with tag "monthly-2022-02" I installed the following since I was building it from a Dockerfile using pre-built Docker image node:...
- 1,856
0
votes
1
answer
93
views
Extracting error from system.ExtrinsicFailed
I have a call to an extrinsic (in a Typescript/RxJS client) that is failing but I want to be able to catch the error that the extrinsic is throwing and not just that it failed.
const chainEvents: ...
- 338
0
votes
0
answers
55
views
StakerStatus is not updating on my custom explorer
I have made a custom explorer of a substrate based blockchain, and when i am chilling the staker, its status is not updating to inactive on the custom explorer, is there any RPC call or any other way ...
2
votes
1
answer
85
views
@polkadot/api suppress output messages
I have an issue regarding displaying errors. For errors, the logger @polkadot/api uses will write to console even when the error is caught and handled. I am handling and displaying the messages a ...
0
votes
0
answers
28
views
Problem in PolkadotJS when trying createType("Call")
Hello i'm facing problem when creating new type for Call
const call = api.createType("Call", {
callIndex: "staking.nominate",
args: ["ADDRESS_1", "...
1
vote
1
answer
119
views
What is Contract Terminate?
Is contract terminate means stop the currently executed smart contract or delete it from Blockchain?. If terminate means stop, then will it be resume later and If terminate means delete from ...
- 672
1
vote
1
answer
41
views
polkadot.js | SignAndSend SuccessResponse does NOT contain all events emitted in tx
SignAndSend SuccessResponse that is a result of a contract call does NOT contain all events that are emitted during tx execution. The Object contains only events emitted from the contract that is ...
- 63
1
vote
1
answer
104
views
unable to upload ink! contract in polkadot-JS
I add pallet-contract into substrate-node-template, and use polkadot-JS to upload ink! contracts. But I get something wrong when I upload a contract.
logs like this:
createType(Call):: Call: failed ...
- 55
4
votes
2
answers
162
views
How to decorate RPC correctly?
The rpc methods (showing in rpc_methods), are still not showing in their own area, after (attempting to) decorate the rpc.
I have custom rpc on a substrate template.
Here are the rpc_methods:
I have ...
- 1,156
11
votes
1
answer
119
views
How to upgrade the client?
I want to do a runtime upgrade but I got the same error as here
solution is :- If there are changes not only to the runtime but also to the node, then this issue is normally caused by upgrading the ...
- 582
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0
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29
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how can change consensus algorithm in substrate [duplicate]
consensusi wanna to know how can change consensus algorithm in substrate ?
i gonna to change consensus to DPOS or NPOS or POS , in this step i want to know how can i change consusnse of substrate .
...
- 491
2
votes
1
answer
54
views
Retrieve block index after transaction is sent
I am a developer integrating Polkadot JS to my app. I am creating an offline transaction which I am sending via the Polkadot Api RPC. In return I get the txid, but it does not help me to retrieve the ...
0
votes
1
answer
24
views
Issuing extrinsics Polkadot.JS/api using collatorSelection
I'm trying to utilize the Polkadot.JS api to query chain parameters and issue transactions under collatorSelection an example of which is:
const x = api.query.collatorSelection.candidates();
console....
1
vote
1
answer
92
views
how to replace api.rpc.payment.queryInfo in polkadotjs now that it is deprecated?
In https://github.com/polkadot-js/api/releases/tag/v9.8.2 api.rpc.payment.queryInfo is marked as deprecated but how can you build a transaction through polkadotjs without using it?
- 13
1
vote
3
answers
122
views
Connecting to a chain on `ws` localhost with polkadot.js app fails when running in brave browser
I know this question is more related to the usage of Brave browser, but the chance of getting a relevant answer would be less in brave forums where the general understanding of polkatot-js is less
...
- 598
3
votes
0
answers
20
views
Does callback get called when extrinsic is in block/finalized when the transaction is retracted?
In some cases the transaction I am signing and sending gets retracted, but its my impression that they are usually included in a future block.
When using polkadot js with the promise api, if the ...
- 41
0
votes
1
answer
37
views
connect Polkadot{js} API correctly
Your API has not been initialized correctly and is not connected to a chain
the API is successfully connected and return value, but all ContractPromise cause this error.
Anyone know how to solve this?
- 73
1
vote
1
answer
70
views
Unable to decode contract event: Unable to find event [closed]
Ive got this error on my console although transaction was succeeded.
what causes this error..?
- 73
0
votes
1
answer
102
views
change consensus of substrate
i wanna to change my substrate chain consensus but i dont know how can i do and set my new consensus in substrate .
i want to set dops consensus for my substrate chain also please guide my for ...
0
votes
1
answer
66
views
Get Block hash from transfer in polkadot.js/api
I created kusama transfer function using polkadot.js/api.
I followed https://polkadot.js.org/docs/api/examples/promise/make-transfer.
I can get extrinsic hash from above. I want to get extrinsic ...
- 173
1
vote
1
answer
72
views
Gov2: list of who is voting on what | Polkadot.js api
I'm building an automation for the Gov2 referenda module, testing right now using wss://governance2-testnet.litentry.io test network with polkadot.js app
Differently from what the democracy module we ...
- 11
0
votes
0
answers
17
views
Cannot reuse the same RPC definitions for types generation and RPC execution
I have an RPC defined for my own pallet, I use latest metadata from chain and lookup types are made automatically available. I would like to use the same RPC definitions to pass as ApiOptions to ...
- 187
0
votes
1
answer
60
views
Sudo option is not showing up on PolkadotUI - Substrate
I am running a substrate-permissioned network, we configure the SUDO account using the keys on polkadot UI account and use it to perform node authorization, etc.
Since last week, SUDO option is not ...
- 3
1
vote
1
answer
38
views
how does work offchain in substrate ( pokadot ) [closed]
I Wanna know about off-chain in the substrate ( Polkadot ) how does work?
How is it mine from the onchain ( main chain in Polkadot )?
maybe somebody wants to hack the off-chain and they do it a ...
2
votes
1
answer
88
views
Informing polkadot/api about additional signed extensions
Polkadot/api has a way to detail signed extensions and I want to understand (so I can use it for our own custom signed extension) what the extrinsic and payload parameters map to.
Here's an example ...
- 349
5
votes
2
answers
111
views
Show custom RPCs/RuntimeAPIs in PolkadotJS UI
At the moment I try to figure out why PolkadotJS UI (https://polkadot.js.org/) is not able to show my custom RPC endpoints or runtime APIs. They are available in general and also available in the list ...
- 319
0
votes
3
answers
82
views
I can't open a HRMP channel between the parachains
I am testing XCM between parachain 2000 and parachain 2001 while referencing this link, How to open HRMP channels between parachains?.
But I couldn't open a new HRMP channel, I faced the "Barrier&...
- 37
0
votes
2
answers
23
views
Use the Polkadot identicon styles for Parachains
the identicon style on Parachains is not aligned with Polkadot, as you can see as below.
How can parachain team make the same style or override the default settings?
According to the Polkdaot.js/UI ...
- 103
1
vote
1
answer
34
views
Opt-out of polkadot.js/api system_health calls for wss rpc
We have been spoiled with free, almost unlimited public websocker rpcs in Kusama and Polkadot ecosystem, but this is changing fast, so we are exploring paid RPC API services. But we have noticed that ...
- 173
0
votes
0
answers
20
views
polkadot.js library for planck unit conversion to DOT,KSM,WND etc [duplicate]
after querying the extrinsic events using polkadot.js API (https://polkadot.js.org/docs/api/cookbook/blocks), I get response something like below.
However the amount is in planck
"amount": &...
- 29
2
votes
1
answer
58
views
is there any method in polakdot.js api to multi-call smart-contract's function?
Is there any method in polakdot-js api to multi-call smart-contract's function similar to https://github.com/makerdao/multicall ?
I want to fetch balances of multiples psp22 token's balance.
For ...
- 21
0
votes
1
answer
50
views
I'm getting an error with the gas limit definition when deploying a smart contract using CodePromise
Problem
The following program does not work with pallet-contract "polkadot-v0.9.29".
"polkadot-v0.9.27" in pallet-contract works as expected.
Anyone know how to get around this ...
- 334
0
votes
0
answers
42
views
Some RPC not shown in polkadot explorer
I was checking the rpc methods in polkadot explorer and I see a lot of rpc shown as output when queried rpc-> methods.
But I don't see some of them inside the rpc field. for example rpc methods ...
- 37