Create new Controllers #
The Kuzzle API is composed of actions grouped in controllers.
A controller is a logical container that groups several actions together.
Each action receives a KuzzleRequest object argument, and is in charge of returning a result which will be transmitted in the response.
Register a new Controller #
We are going to modify the app.ts file to register a controller to expose new API actions.
For this, we need to use the Backend.controller.register method.
You can also declare Controller class for a better code organization.
This method takes the controller name and a ControllerDefinition which defines the controller actions:
app.controller.register('greeting', {
actions: {
sayHello: {
handler: async request => {
return `Hello, ${request.getString('name')}`
}
}
}
});
The code above will register a greeting controller with a sayHello action.
We defined a handler function that uses the name argument from the request and returns a Promise resolving to a string.
Kuzzle will generate a default HTTP route of the following format if none is provided:
GET /_/<controller-name>/<action-name>
Controller names and action names are converted to kebab-case in auto-generated URLs.
See our in-depth guide to learn how to declare your own HTTP routes
We can now test our new action: