Internals

You do not need these details to write an action. They are useful when reviewing framework upgrades or changing dispatch behavior.

The pieces

Class	Responsibility
ExertServiceProvider	Merge config, register the route macro, publishing, and commands.
ActionController	Validate selection, resolve a registered class, and set request identity.
Action	Methods, middleware, and response conversion.
ActionDispatcher	Execute normally or resolve dependencies without executing during prediction.
ContainerCallContext	Preserve the action's contextual dependency-resolution scope during prediction.
ActionInterface	Declare the initiate(Request) entry point.

Why a separate prediction path?

Normal dispatch uses the container's call() method. Prediction needs the same dependency context but must not execute the callback or a registered method binding.

ActionDispatcher resolves dependencies through BoundMethod in a temporary context, then stops with a successful prediction response if validation has not already stopped or failed.

The framework dependency to watch

ContainerCallContext uses Laravel's protected getClassForCallable() and buildStack. It mirrors the installed container's context behavior and restores the stack in finally.

Those protected members are a compatibility dependency. When changing supported Laravel versions, check the implementation and run contextual binding, authorization, failed validation, and method-binding isolation tests.

Response conversion

The action uses Router::toResponse() inside the HTTP pipeline. This gives outer action middleware a response object without adding another pair of router preparation events through prepareResponse().

The outer Laravel router still performs its normal response handling.

For contributor commands, see Package development.