Controlador para Libro completa con metodos get, post, put y delete, API completo y funcional, probado con postman

Author: GeaSmart

.vs/APIBiblioteca/v16/.suo

@@ -1,10 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="5.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="5.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="5.0.0">
       <PrivateAssets>all</PrivateAssets>

APIBiblioteca/APIBiblioteca.csproj

@@ -23,13 +23,13 @@ public AutorController(ApplicationDBContext context)
         [HttpGet]
         public ActionResult<IEnumerable<Autor>> Get()
         {
-            return context.Autor.ToList();
+            return context.Autor.Include(x=>x.Libros).ToList();
         }
 
         [HttpGet("{id}",Name ="ObtenerAutor")]
         public ActionResult<Autor>Get(int id)
         {
-            var autor = context.Autor.FirstOrDefault(x => x.Id == id);
+            var autor = context.Autor.Include(x=>x.Libros).FirstOrDefault(x => x.Id == id);
             if(autor == null)
             {
                 return NotFound();
@@ -68,7 +68,7 @@ public ActionResult<Autor> Delete(int id)
             {
                 return NotFound();
             }
-
+            //tambien puede usarse context.Autor.Remove(autor);
             context.Entry(autor).State = EntityState.Deleted;
             context.SaveChanges();
             return autor;

APIBiblioteca/Controllers/AutorController.cs

@@ -0,0 +1,78 @@
+using APIBiblioteca.Context;
+using APIBiblioteca.Entities;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace APIBiblioteca.Controllers
+{
+    [ApiController]
+    [Route("api/{controller}")]
+    public class LibroController : ControllerBase
+    {
+        private readonly ApplicationDBContext context;
+
+        public LibroController(ApplicationDBContext context)
+        {
+            this.context = context;
+        }
+
+
+        [HttpGet]
+        public ActionResult<List<Libro>> Get()
+        {
+            var libros = context.Libro.Include(x => x.Autor).ToList();
+            return libros;
+        }
+
+        [HttpGet("{id}",Name = "ObtenerLibro")]
+        public ActionResult<Libro> Get(int id)
+        {
+            var libro = context.Libro.Include(x => x.Autor).FirstOrDefault(x => x.Id == id);
+
+            if (libro == null)
+            {
+                return NotFound();
+            }
+            return libro;
+        }
+
+        [HttpPost]
+        public ActionResult Post([FromBody] Libro libro)
+        {
+            context.Libro.Add(libro);
+            context.SaveChanges();
+            return new CreatedAtRouteResult("ObtenerLibro", new { id = libro.Id }, libro);
+        }
+
+        [HttpPut("{id}")]
+        public ActionResult Put([FromBody]Libro libro, int id)
+        {
+            if (id != libro.Id)
+            {
+                return BadRequest();
+            }
+            context.Entry(libro).State = EntityState.Modified;
+            context.SaveChanges();
+            return Ok();
+        }
+
+        [HttpDelete("{id}")]
+        public ActionResult<Libro> Delete(int id)
+        {
+            var libro = context.Libro.FirstOrDefault(x => x.Id == id);
+
+            if (libro == null)
+            {
+                return NotFound();
+            }
+            context.Libro.Remove(libro);
+            context.SaveChanges();
+            return libro;
+        }
+
+    }
+}

APIBiblioteca/Controllers/LibroController.cs

@@ -28,7 +28,8 @@ public Startup(IConfiguration configuration)
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddDbContext<ApplicationDBContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnectionString")));
-            services.AddControllers();
+
+            services.AddControllers().AddNewtonsoftJson(options => options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore);
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.