📚
Open Polkadot Bootcamp
  • 📚 About the Bootcamp
    • 📖 Additional Resources
    • 👐 Ask For Support
  • 📖 Curriculum
  • 📕Rust Programming Language
    • Basic Rust
      • Introduction to Rust
        • 🧑‍💻 Excercises
      • Common Programming Concepts
        • 🧑‍💻 Excercises
      • Program Life Cycle
        • 🧑‍💻 Excercises
      • Ownership & Borrow Checker
      • Common Data Structures
    • Advanced Rust
      • Generic types, Trait extension and Advanced types
      • Lifetime Notation
      • Smart pointers & Macros
      • Common design patterns in Rust
      • Package management & How to structure your Rust project
      • Overview of the Rust ecosystem
  • 📘Building a blockchain with Polkadot SDK
    • Polkadot
      • Additional Reads
        • Why do you want to build a blockchain on Polkadot?
        • Understanding the sharded network design of Polkadot
      • Development on Polkadot
    • Polkadot SDK
      • Substrate
        • Create a new blockchain
          • 🧑‍💻 Exercise: Clone the minimal template
          • Understanding the architecture
          • Break down the node architecture
          • Introducing to Pop CLI tool
        • Adding a custom logic to runtime
          • 🧑‍💻 Exercise: Rust State Machine
          • Components of a Pallet
          • Hooks
          • Weights & Benchmarking
          • Extensions
            • Signed Extensions
            • Transaction Extensions
        • Common runtime modules
          • 📕Example: System Pallet
          • 📕Example: Contracts Pallet
          • 📕Example: Assets Pallet
          • 📕Example: Utility Pallet
        • Runtime API and RPC
        • Runtime upgrade
        • Bump Polkadot SDK versions
      • Cumulus
        • Introduction to Cumulus
          • Parachain from scratch
          • 🧑‍💻 Exercise: Build a parachain from scratch
        • Running a local relaychain network
          • Register & reserve a parachain
          • Launch the network & run a collator node
          • Launch the network with Pop CLI
        • Agile Coretime
    • Polkadot Hub
  • 📒Smart Contract Development
    • Introduction
      • Introduction to PolkaVM
      • Getting started with Solidity development
      • Solidity File Structure
      • Contract Structure
    • Basic Solidity
      • Value types
      • Reference Types
      • Mapping Types
      • Simple Storage
    • Advanced Solidity
      • Units
      • Global Variables
      • Expression and Control Structures
      • Advanced Storage
      • Contract Tests
      • Contracts
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On this page
  1. Building a blockchain with Polkadot SDK
  2. Polkadot SDK
  3. Substrate
  4. Adding a custom logic to runtime

Hooks

PreviousComponents of a PalletNextWeights & Benchmarking

Last updated 4 months ago

hooks are only executed when a code change is detected.

hooks are mandatorily executed at the very beginning of the block body, before any extrinsics are processed.

are always executed before any other other signed or unsigned extrinsics.

hooks are executed after extrinsics if there is weight remaining in the block.

hooks are mandatorily executed after .

📘
OnInitialize
OnRuntimeUpgrade
Inherents
OnIdle
OnFinalize
OnIdle
LogoHooks in frame_support::traits - Rust
Documentation about Pallet hooks