Hooks

Hooks - as well as Middleware is a function which is called before and after action is performed by controller. Hook is specified without a root and can be registered in Area, Controller, Action having access to their providers.

Hooks interface looks like this:

export class MyHook implements HookTarget<State, PayloadType> {
/**  *  this hook run before controller action  */  onPreAction(context: Context<State>, payload: PayloadType) {    // you can rewrite result and set request immediately    context.response.result = Content({ error: { token: false } }, 403);    context.response.setImmediately();    // if response setted immediately no further action will be taken  } // this hook run after controller action
/**  * this hook run after successful run action  */  onPostAction(context: Context<State>, payload: PayloadType) {    // you can filtered response result here  } 
/**  * this hook run only throw exception in controller action  */  onCatchAction(context: Context<State>, payload: PayloadType) {  }}

Hooks can be registered at different levels:

// for all actions in controller@UseHook(MyContollerHook) // or @UseHook(MyContollerHook, 'payload')@Controller()export class HomeController {
  @UseHook(MyHook, "payload") // only for one action  @Get("/")  text(@Res() res: any) {    return ``;  }}
@UseHook(MyAreaHook)@Area()export class MyArea {}

example

You can see examples of hooks on this page https://github.com/alosaur/alosaur/tree/master/examples/hooks