ColdBox HMVC Documentation
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6.x
6.x
  • Introduction
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      • What's New With 6.11.0
      • What's New With 6.10.0
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      • What's New With 6.8.2
      • What's New With 6.8.1
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      • What's New With 6.6.0
      • What's New With 6.5.x
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      • Upgrading to ColdBox 6
    • About This Book
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      • RESTFul Data
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  • Getting Started
    • Getting Started Guide
    • Installation
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      • ColdBox.cfc
        • Configuration Directives
          • CacheBox
          • ColdBox
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          • InterceptorSettings
          • Interceptors
          • Layouts
          • LayoutSettings
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        • System Settings (Java Properties and Environment Variables)
      • Using Settings
      • Bootstrapper - Application.cfc
  • The Basics
    • Request Context
    • Routing
      • Requirements
        • Rewrite Rules
      • Application Router
      • Routing DSL
        • Routing By Convention
        • Pattern Placeholders
        • Routing Methods
        • Resourceful Routes
        • Named Routes
        • Routing Groups
        • Routing Namespaces
      • Building Routable Links
      • RESTFul Extension Detection
      • HTTP Method Spoofing
      • HTML Base Tag
      • Pathinfo Providers
    • Event Handlers
      • How are events called?
      • Getting & Setting Values
      • Setting Views
      • Relocating
      • Rendering Data
      • Sending Files
      • Interception Methods
        • Pre Advices
        • Post Advices
        • Around Advices
      • Model Integration
        • Model Data Binding
      • HTTP Method Security
      • Implicit Methods
      • Executing Events
      • Executing Routes
      • Viewlets - Reusable Events
      • Event Caching
      • Validation
    • Layouts & Views
      • Views
        • Rendering Views
        • Rendering External Views
        • Rendering With Local Variables
        • Rendering Collections
        • View Caching
        • View Helpers
        • View Events
      • Layouts
        • Basic Layouts
        • Default Layout
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        • Overriding Layouts
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        • Layout Helpers
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      • Implicit Layout-View Declarations
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      • ColdBox Elixir
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        • Service Layer
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        • Book
      • Conventions Location
      • WireBox Binder
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      • Injection DSL
        • ColdBox Namespace
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        • EntityService Namespace
        • Executor Namespace
        • Java Namespace
        • LogBox Namespace
        • Models Namespace
        • Provider Namespace
        • WireBox Namespace
      • Object Scopes
      • Coding: Solo Style
        • Datasource
        • Contact.cfc
        • ContactDAO.cfc
        • ContactService.cfc
        • Contacts Handler
      • Coding: ActiveEntity Style
        • ORM
        • Contact.cfc
        • Contacts Handler
        • Views
      • Coding: Virtual Service Layer
        • ORM
        • Contacts.cfc
        • Contacts Handler
        • Views
      • Coding: ORM Scaffolding
        • ORM
        • Contacts.cfc
        • Scaffold
    • Interceptors
      • How do they work?
        • Conventions
      • Interceptor Declaration
      • Interceptor Registration
      • Dynamic Registration
      • Core Interception Points
        • Application Life Cycle Events
        • Object Creating Events
        • Layout-View Events
        • Module Events
        • CacheBox Events
      • Restricting Execution
      • Interceptor Output Buffer
      • Custom Events
        • Configuration Registration
        • Programmatic Registration
        • Listening
        • Announcing Interceptions
      • Unregistering Interceptors
      • Reporting Methods
      • Interceptor Asynchronicity
        • Async Announcements
        • Async Listeners With Join
        • Async Listeners No Join
        • Asynchronous Annotations
  • HMVC
    • Modules
      • Core Modules
      • Locations
      • Parent Configuration
      • Module Layout
        • Changing The Module Layout
      • Module Service
        • Module Lifecycle
        • Module Registration
        • Module Activation
        • Module Unloading
        • Common Methods
        • Loading New Modules
        • Loading A-la-carte Modules
        • Module Events
      • ModuleConfig
        • Public Module Properties
        • The Decorated Variables
        • The configure() Method
        • Module Settings
        • Environment Control
        • Interceptor Events
      • Module Event Executions
      • URL Routing
        • Default Route Execution
        • Module Routes Files
      • Module Async Scheduling
      • Request Context Module Methods
      • Layout and View Renderings
        • Layout/View Discovery
        • Overriding Views
        • Overriding Layouts
        • Default Module Layout
        • Explicit Module Renderings
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      • Module CF Mappings
      • Module Dependencies
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      • Module Bundles
      • Module Inception
  • Testing
    • Testing Quick Start
    • Testing ColdBox Applications
      • Test Harness
      • ColdBox Testing Classes
      • Common Testing Methods
      • Integration Testing
        • Life-Cycle Events
        • Request Setup()
        • The execute() Method
        • HTTP Testing Methods
        • Testing Without Virtual Application
        • Test Annotations
      • Interceptor Testing
      • Model Object Testing
      • Tips & Tricks
  • Digging Deeper
    • Async Programming
      • Async Pipelines & Futures
      • Parallel Computations
      • Executors
      • Scheduled Tasks
    • ColdBox Proxy
      • Getting Started
      • The Base Proxy Object
      • The Event Handlers
        • Distinguishing Request Types
        • RenderData()
      • Proxy Events
      • Standard Return Types
      • Caveats & Gotchas
    • Controller Decorator
    • Flash RAM
      • Flash Storage
      • Using Flash RAM
      • Creating Your Own Flash Scope
    • HTML Helper
    • REST Handler
    • Request Context Decorator
    • Recipes
      • Building REST APIs
      • Application Templates
      • ColdBox Exception Handling
      • Debugging ColdBox Apps
      • Clearing the View Cache
      • Basic HTTP Authentication Interceptor
    • Scheduled Tasks
  • Architecture Concepts
    • What is MVC
    • What is ColdBox
    • How ColdBox Works
    • Testing Concepts
      • Functional Testing
      • Non-Functional Testing
      • Bugs Cost Money
      • Static Testing
      • Dynamic Testing
      • Developer Focus
      • Testing Vocabulary
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  1. The Basics
  2. Interceptors

How do they work?

Last updated 5 years ago

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Interceptors are CFCs that extend the ColdBox Interceptor class (coldbox.system.Interceptor), implement a configuration method called configure(), and then contain methods for the events it will listen for. All interceptors are treated as singletons in your application, so make sure they are thread safe and var scoped.

/**
* My Interceptor
*/
component extends="coldbox.system.Interceptor"{

    function configure(){}

    function preProcess( event, interceptData, buffer, rc, prc ){}
}

You can use CommandBox to create interceptors as well:

coldbox create interceptor help

Registration

Interceptors can be registered in your Coldbox.cfc configuration file using the interceptors struct, or they can be registered manually via the system's interceptor service.

In ColdBox.cfc:

// Interceptors registration
interceptors = [
    {
        class   = "cfc.path", //by default this should be interceptors.yourcfcname  
        name    = "unique name/wirebox ID",
        properties = {
            // configuration
        }
    }
];

Registered manually:

controller.getInterceptorService().registerInterceptor( interceptorClass="cfc.path" );

The configure() Method

The interceptor has one important method that you can use for configuration called configure(). This method will be called right after the interceptor gets created and injected with your interceptor properties.

Info These properties are local to the interceptor only!

As you can see on the diagram, the interceptor class is part of the ColdBox framework super type family, and thus inheriting the functionality of the framework.

Info You can also remove the inheritance from the CFC (preferred method) and WireBox will extend the coldbox.system.Interceptor for you using .

Virtual Inheritance