Groovy and Grails Groovy and Grails Web Development & MVC

Question 1

In Grails MVC, which artifact is responsible for handling HTTP requests and returning responses?

Accepted Answer

Controller

Answer

Grails controllers handle incoming HTTP requests, invoke business logic (often via services), and return responses or render views.

Question 2

Which file extension is used for Grails Server Pages (GSP) view templates?

Accepted Answer

.gsp

Answer

GSP files use the `.gsp` extension and are Grails's view templating system, supporting Groovy expressions and custom tag libraries.

Question 3

By convention, where does Grails look for views rendered by `MyController`?

Accepted Answer

grails-app/views/my/

Answer

Grails convention places a controller's view files in `grails-app/views/<controllerName>/`, where the controller name is lowercased.

Question 4

What does the `render` method do in a Grails controller action?

Accepted Answer

Sends a response to the client

Answer

The `render` method in a Grails controller writes a response body — such as a view, text, JSON, or XML — back to the client.

Question 5

Which Grails URL mapping entry would map `/api/products` GET requests to the `ProductController.list` action?

Accepted Answer

"/api/products"(controller:'product', action:'list')

Answer

Grails URL mappings use a DSL where you specify the URL string and a map of controller and action names to define routing.

Groovy and Grails Practice Test