Controllers

• Introduction
• Basic Controller
  • Dependency Injection

Introduction

Controllers are where the bulk of your request related code is stored. Controllers group request handling logic into a single class allowing you to organize your code in a clean way.

Basic Controller

Start CLI Tool

First you need to start the Severell CLI tool by running:

mvn severell:cli

To create a controller you can use the make:controller command.

make:controller PostController

This will create a controller called PostController in your controller package.

package com.example.controller;

import com.severell.core.http.Request;

public class PostController {

    public void index() {
        //Put request handling logic here. 
    }

}

Dependency Injection

Since controller methods are resolved by the container you can inject any dependencies you may need into your controller methods. A common use case for this is to get the Request and Response objects.

package com.example.controller;

import com.severell.core.http.Request;
import java.util.HashMap;

public class PostController {

    public void index(Request request, Response response) {
        response.render("post.mustache", new HashMap<>());
    }

}

The Request and Response object will get resolved and passed into your controller method.