Call Workflow
This diagram shows the call execution flow: starting with update_cap, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch which emits events: CapUpdated and modifies storage: Crowdloans, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: developerssubnet owners
The Big Picture
Adjust target - lowering below raised enables finalization.
Use Cases
- Adjust funding goal
From Chain Metadata
Update the cap of a non-finalized crowdloan. The dispatch origin for this call must be _Signed_ and must be the creator of the crowdloan. Parameters: `crowdloan_id`: The id of the crowdloan to update the cap of. `new_cap`: The new cap.
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | crowdloan_id | Compact<u32> Cpt | crowdloan_id (Compact<u32>) (SCALE compact -> integer) |
| 1 | new_cap | Compact<u64> Cpt | new_cap (Compact<u64>) (SCALE compact -> integer) |
Permissions
Origin
Signed
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Crowdloan not finalized
- Signer is creator
- Cap exceeds deposit
Effects
Events Emitted
Storage Modified
Postconditions
- Cap updated
- CapUpdated event emitted
Side Effects
- If lowered below raised, may become finalizable
Code Examples
import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";
const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });
// Build update_cap call
const crowdloan_id = 0;
const new_cap = 0;
const call = api.tx[stringCamelCase("Crowdloan")][stringCamelCase("update_cap")](
crowdloan_id,
new_cap
);Runtime Info
- Pallet Index
- 27
- Call Index
- 8
- First Version
- v273
- Current Version
- v393