Writing controllers and routes

We are now in the section where we will be writing controllers that process HTTP requests from the client application. We are also going to write routes that redirect an HTTP request to its respective controller.

These will be two simple controllers, but we will refactor them in the next chapter, Chapter 6, Diving into CQRS.

TourPackagesController

We will be creating the controller for TourPackages that will handle and process any requests that will retrieve and update TourPackages table in the database:

1. Now go back to the Travel.WebApi project and create TourPackagesController.cs inside of the Controllers directory and write the following code:

   using Microsoft.AspNetCore.Mvc;
   using Microsoft.EntityFrameworkCore;
   using System.Threading.Tasks;
   using Travel.Data.Contexts;
   using Travel.Domain.Entities;

   The code imports the preceding namespaces, which are needed in this controller.

2. Next, write the controller class:

   namespace Travel.WebApi...