Module frame_support::pallet_prelude

source · [−]

Expand description

Prelude to be used alongside pallet macro, for ease of use.

Re-exports

pub use frame_support::traits::GenesisBuild;

pub use frame_support::debug;

pub use frame_support::ensure;

pub use frame_support::storage;

pub use frame_support::traits::Get;

pub use frame_support::traits::Hooks;

pub use frame_support::traits::IsType;

pub use frame_support::traits::GetPalletVersion;

pub use frame_support::traits::EnsureOrigin;

pub use frame_support::dispatch::DispatchResultWithPostInfo;

pub use frame_support::dispatch::Parameter;

pub use frame_support::weights::DispatchClass;

pub use frame_support::weights::Pays;

pub use frame_support::weights::Weight;

pub use frame_support::storage::types::ValueQuery;

pub use frame_support::storage::types::OptionQuery;

Structs

Hash storage keys with blake2 128

Blake2_128Concat

Hash storage keys with concat(blake2_128(key), key)

Hash storage keys with blake2 256

Store the key directly.

Inherent data to include in a block.

Zero-sized type used to mark things that “act like” they own a T.

StorageDoubleMap

A type that allow to store values for (key1, key2) couple. Similar to StorageMap but allow to iterate and remove value associated to first key.

A type that allow to store value for given key. Allowing to insert/remove/iterate on values.

A type that allow to store a value.

Hash storage keys with concat(twox64(key), key)

Hash storage keys with twox 128

Hash storage keys with twox 256

ValidTransaction

Information concerning a valid transaction.

Enums

Reason why a dispatch call failed.

InvalidTransaction

An invalid transaction validity.

TransactionSource

The source of the transaction.

TransactionValidityError

Errors that can occur while checking the validity of a transaction.

UnknownTransaction

An unknown transaction validity.

Traits

Trait that allows zero-copy read of value-references from slices in LE format.

Trait that allows zero-copy write of value-references to slices in LE format.

MaybeSerializeDeserialize

A type that implements Serialize, DeserializeOwned and Debug when in std environment.

A type that can be used in runtime structures.

ProvideInherent

A pallet that provides or verifies an inherent extrinsic.

ValidateUnsigned

Something that can validate unsigned extrinsics for the transaction pool.

Type Definitions

InherentIdentifier

An identifier for an inherent.

TransactionLongevity

Minimum number of blocks a transaction will remain valid for. TransactionLongevity::max_value() means “forever”.

TransactionPriority

Priority for a transaction. Additive. Higher is better.

Tag for a transaction. No two transactions with the same tag should be placed on-chain.

TransactionValidity

Information on a transaction’s validity and, if valid, on how it relates to other transactions.

Derive Macros

Derive Clone but do not bound any generic. Docs are at frame_support::CloneNoBound.

Derive Debug but do not bound any generics. Docs are at frame_support::DeriveNoBounds.

Derive parity_scale_codec::Decode and for struct and enum.

Derive parity_scale_codec::Encode and parity_scale_codec::EncodeLike for struct and enum.

derive Eq but do no bound any generic. Docs are at frame_support::EqNoBound.

PartialEqNoBound

Derive PartialEq but do not bound any generic. Docs are at frame_support::PartialEqNoBound.

RuntimeDebugNoBound

Derive Debug, if std is enabled it uses frame_support::DebugNoBound, if std is not enabled it just returns "<stripped>". This behaviour is useful to prevent bloating the runtime WASM blob from unneeded code.