pub trait Config<I: 'static = ()>: Config + Sized {
type RuntimeEvent: From<Event<Self, I>> + IsType<<Self as Config>::RuntimeEvent>;
type WeightInfo: WeightInfo;
type Currency: ReservableCurrency<Self::AccountId> + LockableCurrency<Self::AccountId, Moment = BlockNumberFor<Self, I>> + Inspect<Self::AccountId>;
type Polls: Polling<TallyOf<Self, I>, Votes = BalanceOf<Self, I>, Moment = BlockNumberFor<Self, I>>;
type MaxTurnout: Get<BalanceOf<Self, I>>;
type MaxVotes: Get<u32>;
type VoteLockingPeriod: Get<BlockNumberFor<Self, I>>;
type BlockNumberProvider: BlockNumberProvider;
type VotingHooks: VotingHooks<Self::AccountId, PollIndexOf<Self, I>, BalanceOf<Self, I>>;
}Expand description
Configuration trait of this pallet.
The main purpose of this trait is to act as an interface between this pallet and the runtime in which it is embedded in. A type, function, or constant in this trait is essentially left to be configured by the runtime that includes this pallet.
Consequently, a runtime that wants to include this pallet must implement this trait.
Required Associated Types§
type RuntimeEvent: From<Event<Self, I>> + IsType<<Self as Config>::RuntimeEvent>
Sourcetype WeightInfo: WeightInfo
type WeightInfo: WeightInfo
Weight information for extrinsics in this pallet.
Sourcetype Currency: ReservableCurrency<Self::AccountId> + LockableCurrency<Self::AccountId, Moment = BlockNumberFor<Self, I>> + Inspect<Self::AccountId>
type Currency: ReservableCurrency<Self::AccountId> + LockableCurrency<Self::AccountId, Moment = BlockNumberFor<Self, I>> + Inspect<Self::AccountId>
Currency type with which voting happens.
Sourcetype Polls: Polling<TallyOf<Self, I>, Votes = BalanceOf<Self, I>, Moment = BlockNumberFor<Self, I>>
type Polls: Polling<TallyOf<Self, I>, Votes = BalanceOf<Self, I>, Moment = BlockNumberFor<Self, I>>
The implementation of the logic which conducts polls.
Sourcetype MaxTurnout: Get<BalanceOf<Self, I>>
type MaxTurnout: Get<BalanceOf<Self, I>>
The maximum amount of tokens which may be used for voting. May just be
Currency::total_issuance, but you might want to reduce this in order to account for
funds in the system which are unable to vote (e.g. parachain auction deposits).
Sourcetype MaxVotes: Get<u32>
type MaxVotes: Get<u32>
The maximum number of concurrent votes an account may have.
Also used to compute weight, an overly large value can lead to extrinsics with large
weight estimation: see delegate for instance.
Sourcetype VoteLockingPeriod: Get<BlockNumberFor<Self, I>>
type VoteLockingPeriod: Get<BlockNumberFor<Self, I>>
The minimum period of vote locking.
It should be no shorter than enactment period to ensure that in the case of an approval, those successful voters are locked into the consequences that their votes entail.
Sourcetype BlockNumberProvider: BlockNumberProvider
type BlockNumberProvider: BlockNumberProvider
Provider for the block number. Normally this is the frame_system pallet.
Sourcetype VotingHooks: VotingHooks<Self::AccountId, PollIndexOf<Self, I>, BalanceOf<Self, I>>
type VotingHooks: VotingHooks<Self::AccountId, PollIndexOf<Self, I>, BalanceOf<Self, I>>
Hooks are called when a new vote is registered or an existing vote is removed.
The trait does not expose weight information. The weight of each hook is assumed to be benchmarked as part of the function that calls it. Hooks should never recursively call into functions that called, directly or indirectly, the function that called them. This could lead to infinite recursion and stack overflow. Note that this also means to not call into other generic functionality like batch or similar. Also, anything that a hook did will be subject to the transactional semantics of the calling function. This means that if the calling function fails, the hook will be rolled back without further notice.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.