[Feat] EF Core integrated to App

Author: prog-rajkamal

AdminCrud/Controllers/UserController.cs

@@ -16,15 +16,15 @@ public class UserController : Controller
 
         public UserController()
         {
-            this.userList = FakeUser.GetUsers();
+            // this.userList = FakeUser.GetUsers();
         }
         // GET: api/User
         [HttpGet]
         public IEnumerable<User> Get()
         {
-            lock (this.userList.Users)
+            using (var context = new UserContext())
             {
-                return this.userList.Users;
+                return context.Users.ToList();
             }
         }
 
@@ -34,8 +34,10 @@ public IActionResult Get(int id)
         {
             try
             {
-
-                return Ok(this.userList.Users.First(us => us.Id == id));
+                using (var context = new UserContext())
+                {
+                    return Ok(context.Users.First(us => us.Id == id));
+                }
             }
             catch (Exception)
             {
@@ -50,20 +52,22 @@ public IActionResult Get(int id)
         public User Post([FromBody]User value)
         {
 
-            lock (this.userList.Users)
-            {
 
-                this.userList.Users.Add(new Models.User()
+
+            using (var context = new UserContext())
+            {
+                var newUser = new Models.User()
                 {
                     Name = value.Name,
                     DateOfBirth = value.DateOfBirth,
                     UserRole = value.UserRole,
                     EmailId = value.EmailId,
-                    Id = this.userList.Users.Last().Id + 1,
-                });
+                };
+                context.Users.Add(newUser);
+                context.SaveChanges();
+                return newUser;
             }
 
-            return this.userList.Users.Last();
 
         }
 
@@ -77,11 +81,18 @@ public void Put(int id, [FromBody]string value)
         [HttpDelete("{id}")]
         public object Delete(int id)
         {
-            var num = this.userList.Users.RemoveAll(usr => usr.Id == id);
-            if (num == 0)
+            using (var cxt = new UserContext())
             {
-                return Json(new { StatusCode = 404, Message = "NO User was found." });
+                var delUser = cxt.Users.Find(id);
+                if (delUser == null)
+                {
+                    return Json(new { StatusCode = 404, Message = "NO User was found." });
+                }
+                cxt.Users.Remove(delUser);
+                cxt.SaveChanges();
+
             }
+
             return Json(new { StatusCode = 200, Message = "User was deleted succesfully." });
         }
     }

AdminCrud/Models/DbContext.cs

@@ -0,0 +1,47 @@
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace AdminCrud.Models
+{
+    public class FakeUser
+    {
+        private static FakeUser _single;
+        public FakeUser()
+        {
+            //int user_seq = 1;
+            Users = new List<User>();
+
+            for (int user_seq = 1; user_seq < 100; user_seq++)
+            {
+
+                Users.Add(new User()
+                {
+                    Id = user_seq,
+                    Name = "User " + user_seq,
+                    EmailId = String.Format("user{0}@crud.com", user_seq),
+                    DateOfBirth = new DateTimeOffset(1980 + user_seq, user_seq % 12 + 1, user_seq % 28 + 1, 0, 0, 0, TimeSpan.Zero),
+                    UserRole = Role.User
+                });
+            }
+
+        }
+
+        internal static FakeUser GetUsers()
+        {
+            var a = new { };
+            lock (a)
+            {
+                if (_single == null)
+                {
+                    _single = new FakeUser();
+                }
+            }
+            return _single;
+        }
+
+        public List<User> Users { get; set; }
+    }
+}

AdminCrud/Models/FakeContext.cs

@@ -1,47 +1,19 @@
-using Microsoft.EntityFrameworkCore;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
-namespace AdminCrud.Models
-{
-    public class FakeUser
-    {
-        private static FakeUser _single;
-        public FakeUser()
-        {
-            //int user_seq = 1;
-            Users = new List<User>();
-
-            for (int user_seq = 1; user_seq < 100; user_seq++)
-            {
-
-                Users.Add(new User()
-                {
-                    Id = user_seq,
-                    Name = "User " + user_seq,
-                    EmailId = String.Format("user{0}@crud.com", user_seq),
-                    DateOfBirth = new DateTimeOffset(1980 + user_seq, user_seq % 12 + 1, user_seq % 28 + 1, 0, 0, 0, TimeSpan.Zero),
-                    UserRole = Role.User
-                });
-            }
-
-        }
-
-        internal static FakeUser GetUsers()
-        {
-            var a = new { };
-            lock (a)
-            {
-                if (_single == null)
-                {
-                    _single = new FakeUser();
-                }
-            }
-            return _single;
-        }
-
-        public List<User> Users { get; set; }
-    }
-}
+using JetBrains.Annotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace AdminCrud.Models
+{
+    public class UserContext : DbContext
+    {
+        public UserContext() : base()
+        {
+        }
+        protected override void OnConfiguring(DbContextOptionsBuilder opts)
+        {
+            opts.UseSqlServer(@"Server=Delli5\SQLEx; Database = master; User id=sa;Password=info123!");
+        }
+
+
+        public DbSet<User> Users { get; set; }
+    }
+}

AdminCrud/Models/UserContext.cs

@@ -13,10 +13,10 @@ Content-Type: application/json; charset=UTF-8
 
 {
     "Id":101,
-    "Name":"User 101",
+    "Name":"User 02",
     "EmailId": "[email protected]",
     "dateOfBirth":"1999-02-02T00:00:00+00:00",
-    "UserRole":2
+    "UserRole":3
 }
 
 ###