Adding the Edit form using Razor Pages

OdeToFoodRider/OdeToFoodRider/Pages/Restaurants/Edit.cshtml

@@ -0,0 +1,25 @@
+@page "{id}"
+@using OdeToFoodRider.Pages.Restaurants
+
+@model EditModel
+
+<h1>Edit @Model.Restaurant.Name</h1>
+
+<form method="post">
+
+    <input type="hidden" asp-for="Restaurant.Id"/>
+
+    <div>
+        <label asp-for="Restaurant.Name"></label>
+        <input asp-for="Restaurant.Name"/>
+        <span asp-validation-for="Restaurant.Name"></span>
+    </div>
+
+    <div>
+        <label asp-for="Restaurant.Cuisine"></label>
+        <select asp-for="Restaurant.Cuisine" asp-items="@Html.GetEnumSelectList<CuisineType>()"></select>
+        <span asp-validation-for="Restaurant.Cuisine"></span>
+    </div>
+
+    <input type="submit" name="save" value="Save"/>
+</form>

OdeToFoodRider/OdeToFoodRider/Pages/Restaurants/Edit.cshtml.cs

@@ -0,0 +1,42 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using OdeToFoodRider.Models;
+using OdeToFoodRider.Services;
+
+namespace OdeToFoodRider.Pages.Restaurants
+{
+    public class EditModel : PageModel
+    {
+        private readonly IRestaurantData _restaurantData;
+
+        [BindProperty]
+        public Restaurant Restaurant { get; set; }
+
+        public EditModel(IRestaurantData restaurantData)
+        {
+            _restaurantData = restaurantData;
+        }
+
+        public IActionResult OnGet(int id)
+        {
+            Restaurant = _restaurantData.Get(id);
+            if (Restaurant == null)
+            {
+                return RedirectToAction("Index", "Home");
+            }
+
+            return Page();
+        }
+
+        public IActionResult OnPost()
+        {
+            if (ModelState.IsValid)
+            {
+                _restaurantData.Update(Restaurant);
+                return RedirectToAction("Details", "Home", new {id = Restaurant.Id});
+            }
+
+            return Page();
+        }
+    }
+}

OdeToFoodRider/OdeToFoodRider/Services/IRestaurantData.cs

@@ -9,5 +9,6 @@ public interface IRestaurantData
         IEnumerable<Restaurant> GetAll();
         Restaurant Get(int id);
         Restaurant Add(Restaurant restaurant);
+        Restaurant Update(Restaurant restaurant);
     }
 }

OdeToFoodRider/OdeToFoodRider/Services/InMemoryRestaurantData.cs

@@ -40,5 +40,10 @@ public Restaurant Add(Restaurant restaurant)
             _restaurants.Add(restaurant);
             return restaurant;
         }
+
+        public Restaurant Update(Restaurant restaurant)
+        {
+            throw new System.NotImplementedException();
+        }
     }
 }

OdeToFoodRider/OdeToFoodRider/Services/SqlRestaurantData.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using Microsoft.EntityFrameworkCore;
 using OdeToFoodRider.Data;
 using OdeToFoodRider.Models;
 
@@ -21,6 +22,13 @@ public Restaurant Add(Restaurant restaurant)
             return restaurant;
         }
 
+        public Restaurant Update(Restaurant restaurant)
+        {
+            _context.Attach(restaurant).State = EntityState.Modified;
+            _context.SaveChanges();
+            return restaurant;
+        }
+
         public Restaurant Get(int id)
         {
             return _context.Restaurants.FirstOrDefault(r => r.Id == id);

OdeToFoodRider/OdeToFoodRider/Views/Home/Index.cshtml

@@ -18,6 +18,7 @@
                 <a href="/home/details/@restaurant.Id">Details</a>
                 @Html.ActionLink("Go", "Details", new {id = restaurant.Id})
                 <a asp-action="Details" asp-route-id="@restaurant.Id">More</a>
+                <a asp-page="/Restaurants/Edit" asp-route-id="@restaurant.Id">Edit</a>
             </td>
         </tr>
     }

OdeToFoodVisualStudio/OdeToFoodVisualStudio/Pages/Restaurants/Edit.cshtml

@@ -0,0 +1,26 @@
+@page "{id}"
+@using OdeToFoodVisualStudio.Pages.Restaurants
+
+@model EditModel
+
+<h1>Edit @Model.Restaurant.Name</h1>
+
+<form method="post">
+
+    <input type="hidden" asp-for="Restaurant.Id"/>
+
+    <div>
+        <label asp-for="Restaurant.Name"></label>
+        <input asp-for="Restaurant.Name" />
+        <span asp-validation-for="Restaurant.Name"></span>
+    </div>
+
+    @* VSRD: Visual Studio has "Wrap with div" action but it's not reformatting the resulting markup, and as Extend Selection doesn't work in Razor, I have to select manually, then invoke Ctrl+K,F to reformat selection *@
+    <div>
+        <label asp-for="Restaurant.Cuisine"></label>
+        <select asp-for="Restaurant.Cuisine" asp-items="@Html.GetEnumSelectList<CuisineType>()"></select>
+        <span asp-validation-for="Restaurant.Cuisine"></span>
+    </div>
+
+    <input type="submit" name="save" value="Save" />
+</form>

OdeToFoodVisualStudio/OdeToFoodVisualStudio/Pages/Restaurants/Edit.cshtml.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using OdeToFoodVisualStudio.Models;
+using OdeToFoodVisualStudio.Services;
+
+namespace OdeToFoodVisualStudio.Pages.Restaurants
+{
+    public class EditModel : PageModel
+    {
+        private IRestaurantData _restaurantData;
+
+        [BindProperty]
+        public Restaurant Restaurant { get; set; }
+
+        public EditModel(IRestaurantData restaurantData)
+        {
+            _restaurantData = restaurantData;
+        }
+
+        public IActionResult OnGet(int id)
+        {
+            Restaurant = _restaurantData.Get(id);
+            if (Restaurant == null)
+            {
+                return RedirectToAction("Index", "Home");
+            }
+            return Page();
+        }
+
+        public IActionResult OnPost()
+        {
+            if(ModelState.IsValid)
+            {
+                _restaurantData.Update(Restaurant);
+                return RedirectToAction("Details", "Home", new { id = Restaurant.Id });
+            }
+
+            return Page();
+        }
+    }
+}

OdeToFoodVisualStudio/OdeToFoodVisualStudio/Services/IRestaurantData.cs

@@ -12,5 +12,6 @@ public interface IRestaurantData
         IEnumerable<Restaurant> GetAll();
         Restaurant Get(int id);
         Restaurant Add(Restaurant restaurant);
+        Restaurant Update(Restaurant restaurant);
     }
 }

OdeToFoodVisualStudio/OdeToFoodVisualStudio/Services/InMemoryRestaurantData.cs

@@ -40,5 +40,10 @@ public Restaurant Add(Restaurant restaurant)
             _restaurants.Add(restaurant);
             return restaurant;
         }
+
+        public Restaurant Update(Restaurant restaurant)
+        {
+            throw new NotImplementedException();
+        }
     }
 }

OdeToFoodVisualStudio/OdeToFoodVisualStudio/Services/SqlRestaurantData.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
 using OdeToFoodVisualStudio.Data;
 using OdeToFoodVisualStudio.Models;
 
@@ -33,5 +34,13 @@ public IEnumerable<Restaurant> GetAll()
         {
             return _context.Restaurants.OrderBy(r => r.Name);
         }
+
+        public Restaurant Update(Restaurant restaurant)
+        {
+            _context.Attach(restaurant).State = EntityState.Modified;
+            // VSRD: Visual Studio provides a kind of smart completion for non-imported EntityState after equals, nice. Inserts an FQN though :(
+            _context.SaveChanges();
+            return restaurant;
+        }
     }
 }

OdeToFoodVisualStudio/OdeToFoodVisualStudio/Views/Home/Index.cshtml

@@ -17,6 +17,7 @@
                 <a href="/home/details/@restaurant.Id">Details</a>
                 @Html.ActionLink("Go", "Details", new { id = restaurant.Id })
                 <a asp-action="Details" asp-route-id="@restaurant.Id">More</a>
+                <a asp-page="/Restaurants/Edit" asp-route-id="@restaurant.Id">Edit</a>
             </td>
         </tr>
     }