This call was removed in v326
This call is no longer available in the current runtime. Existed from v123 to v326. Shown here for historical reference.
swap_member
Call Removed v123 → v326 (removed) #2Replaces one Senate member with another.
Call Workflow
This diagram shows the call execution flow: starting with swap_member, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: validators
The Big Picture
Maintains size while changing composition.
Use Cases
- Member transitions
From Chain Metadata
Swap out one member `remove` for another `add`. May only be called from `T::SwapOrigin`. Prime membership is *not* passed from `remove` to `add`, if extant.
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | remove | MultiAddress | remove (MultiAddress) |
| 1 | add | MultiAddress | add (MultiAddress) |
Permissions
Origin
Unknown
Required Role
Requirements
- Origin has authority
Effects
Postconditions
- Member swapped
Side Effects
- Emits MembersSwapped
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 swap_member call
const remove = 0 as any /* MultiAddress */;
const add = 0 as any /* MultiAddress */;
const call = api.tx[stringCamelCase("SenateMembers")][stringCamelCase("swap_member")](
remove,
add
);Runtime Info
- Pallet Index
- 10
- Call Index
- 2
- First Version
- v123
- Removed In
- v326