Seed core example with sample data, open browser on run, use long IDs

Author: bkoelman

src/Examples/JsonApiDotNetCoreExample/Data/AppDbContext.cs

@@ -1,6 +1,7 @@
 using JetBrains.Annotations;
 using JsonApiDotNetCoreExample.Models;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata;
 
 // @formatter:wrap_chained_method_calls chop_always
 
@@ -18,14 +19,33 @@ public AppDbContext(DbContextOptions<AppDbContext> options)
 
     protected override void OnModelCreating(ModelBuilder builder)
     {
-        // When deleting a person, un-assign him/her from existing todo items.
+        // When deleting a person, un-assign him/her from existing todo-items.
         builder.Entity<Person>()
             .HasMany(person => person.AssignedTodoItems)
-            .WithOne(todoItem => todoItem.Assignee!);
+            .WithOne(todoItem => todoItem.Assignee);
 
-        // When deleting a person, the todo items he/she owns are deleted too.
-        builder.Entity<TodoItem>()
-            .HasOne(todoItem => todoItem.Owner)
-            .WithMany();
+        // When deleting a person, the todo-items he/she owns are deleted too.
+        builder.Entity<Person>()
+            .HasMany(person => person.OwnedTodoItems)
+            .WithOne(todoItem => todoItem.Owner);
+
+        AdjustDeleteBehaviorForJsonApi(builder);
+    }
+
+    private static void AdjustDeleteBehaviorForJsonApi(ModelBuilder builder)
+    {
+        foreach (IMutableForeignKey foreignKey in builder.Model.GetEntityTypes()
+            .SelectMany(entityType => entityType.GetForeignKeys()))
+        {
+            if (foreignKey.DeleteBehavior == DeleteBehavior.ClientSetNull)
+            {
+                foreignKey.DeleteBehavior = DeleteBehavior.SetNull;
+            }
+
+            if (foreignKey.DeleteBehavior == DeleteBehavior.ClientCascade)
+            {
+                foreignKey.DeleteBehavior = DeleteBehavior.Cascade;
+            }
+        }
     }
 }

src/Examples/JsonApiDotNetCoreExample/Data/RotatingList.cs

@@ -0,0 +1,35 @@
+namespace JsonApiDotNetCoreExample.Data;
+
+internal abstract class RotatingList
+{
+    public static RotatingList<T> Create<T>(int count, Func<int, T> createElement)
+    {
+        List<T> elements = new();
+
+        for (int index = 0; index < count; index++)
+        {
+            T element = createElement(index);
+            elements.Add(element);
+        }
+
+        return new RotatingList<T>(elements);
+    }
+}
+
+internal sealed class RotatingList<T>
+{
+    private int _index = -1;
+
+    public IList<T> Elements { get; }
+
+    public RotatingList(IList<T> elements)
+    {
+        Elements = elements;
+    }
+
+    public T GetNext()
+    {
+        _index++;
+        return Elements[_index % Elements.Count];
+    }
+}

src/Examples/JsonApiDotNetCoreExample/Data/Seeder.cs

@@ -0,0 +1,56 @@
+using JetBrains.Annotations;
+using JsonApiDotNetCoreExample.Models;
+
+namespace JsonApiDotNetCoreExample.Data;
+
+[UsedImplicitly(ImplicitUseKindFlags.InstantiatedNoFixedConstructorSignature)]
+internal sealed class Seeder
+{
+    public static async Task CreateSampleDataAsync(AppDbContext dbContext)
+    {
+        const int todoItemCount = 500;
+        const int personCount = 50;
+        const int tagCount = 25;
+
+        RotatingList<Person> people = RotatingList.Create(personCount, index => new Person
+        {
+            FirstName = $"FirstName{index + 1:D2}",
+            LastName = $"LastName{index + 1:D2}"
+        });
+
+        RotatingList<Tag> tags = RotatingList.Create(tagCount, index => new Tag
+        {
+            Name = $"TagName{index + 1:D2}"
+        });
+
+        RotatingList<TodoItemPriority> priorities = RotatingList.Create(3, index => (TodoItemPriority)(index + 1));
+
+        RotatingList<TodoItem> todoItems = RotatingList.Create(todoItemCount, index =>
+        {
+            var todoItem = new TodoItem
+            {
+                Description = $"TodoItem{index + 1:D3}",
+                Priority = priorities.GetNext(),
+                DurationInHours = index,
+                CreatedAt = DateTimeOffset.UtcNow,
+                Owner = people.GetNext(),
+                Tags = new HashSet<Tag>
+                {
+                    tags.GetNext(),
+                    tags.GetNext(),
+                    tags.GetNext()
+                }
+            };
+
+            if (index % 3 == 0)
+            {
+                todoItem.Assignee = people.GetNext();
+            }
+
+            return todoItem;
+        });
+
+        dbContext.TodoItems.AddRange(todoItems.Elements);
+        await dbContext.SaveChangesAsync();
+    }
+}

src/Examples/JsonApiDotNetCoreExample/Definitions/TodoItemDefinition.cs

@@ -10,7 +10,7 @@
 namespace JsonApiDotNetCoreExample.Definitions;
 
 [UsedImplicitly(ImplicitUseKindFlags.InstantiatedNoFixedConstructorSignature)]
-public sealed class TodoItemDefinition : JsonApiResourceDefinition<TodoItem, int>
+public sealed class TodoItemDefinition : JsonApiResourceDefinition<TodoItem, long>
 {
     private readonly ISystemClock _systemClock;
 
@@ -29,7 +29,7 @@ private SortExpression GetDefaultSortOrder()
     {
         return CreateSortExpressionFromLambda(new PropertySortOrder
         {
-            (todoItem => todoItem.Priority, ListSortDirection.Descending),
+            (todoItem => todoItem.Priority, ListSortDirection.Ascending),
             (todoItem => todoItem.LastModifiedAt, ListSortDirection.Descending)
         });
     }

src/Examples/JsonApiDotNetCoreExample/Models/Person.cs

@@ -1,3 +1,4 @@
+using System.ComponentModel.DataAnnotations.Schema;
 using JetBrains.Annotations;
 using JsonApiDotNetCore.Resources;
 using JsonApiDotNetCore.Resources.Annotations;
@@ -6,14 +7,21 @@ namespace JsonApiDotNetCoreExample.Models;
 
 [UsedImplicitly(ImplicitUseTargetFlags.Members)]
 [Resource]
-public sealed class Person : Identifiable<int>
+public sealed class Person : Identifiable<long>
 {
     [Attr]
     public string? FirstName { get; set; }
 
     [Attr]
     public string LastName { get; set; } = null!;
 
+    [Attr(Capabilities = AttrCapabilities.AllowView)]
+    [NotMapped]
+    public string DisplayName => FirstName != null ? $"{FirstName} {LastName}" : LastName;
+
+    [HasMany]
+    public ISet<TodoItem> OwnedTodoItems { get; set; } = new HashSet<TodoItem>();
+
     [HasMany]
     public ISet<TodoItem> AssignedTodoItems { get; set; } = new HashSet<TodoItem>();
 }

src/Examples/JsonApiDotNetCoreExample/Models/Tag.cs

@@ -7,7 +7,7 @@ namespace JsonApiDotNetCoreExample.Models;
 
 [UsedImplicitly(ImplicitUseTargetFlags.Members)]
 [Resource]
-public sealed class Tag : Identifiable<int>
+public sealed class Tag : Identifiable<long>
 {
     [Attr]
     [MinLength(1)]

src/Examples/JsonApiDotNetCoreExample/Models/TodoItem.cs

@@ -7,7 +7,7 @@ namespace JsonApiDotNetCoreExample.Models;
 
 [UsedImplicitly(ImplicitUseTargetFlags.Members)]
 [Resource]
-public sealed class TodoItem : Identifiable<int>
+public sealed class TodoItem : Identifiable<long>
 {
     [Attr]
     public string Description { get; set; } = null!;
@@ -16,6 +16,9 @@ public sealed class TodoItem : Identifiable<int>
     [Required]
     public TodoItemPriority? Priority { get; set; }
 
+    [Attr]
+    public long? DurationInHours { get; set; }
+
     [Attr(Capabilities = AttrCapabilities.AllowFilter | AttrCapabilities.AllowSort | AttrCapabilities.AllowView)]
     public DateTimeOffset CreatedAt { get; set; }
 
@@ -25,9 +28,9 @@ public sealed class TodoItem : Identifiable<int>
     [HasOne]
     public Person Owner { get; set; } = null!;
 
-    [HasOne(Capabilities = HasOneCapabilities.AllowView | HasOneCapabilities.AllowSet)]
+    [HasOne]
     public Person? Assignee { get; set; }
 
-    [HasMany(Capabilities = HasManyCapabilities.AllowView | HasManyCapabilities.AllowFilter)]
+    [HasMany]
     public ISet<Tag> Tags { get; set; } = new HashSet<Tag>();
 }

src/Examples/JsonApiDotNetCoreExample/Models/TodoItemPriority.cs

@@ -5,7 +5,7 @@ namespace JsonApiDotNetCoreExample.Models;
 [UsedImplicitly(ImplicitUseTargetFlags.Members)]
 public enum TodoItemPriority
 {
-    Low,
-    Medium,
-    High
+    High = 1,
+    Medium = 2,
+    Low = 3
 }

src/Examples/JsonApiDotNetCoreExample/Program.cs

@@ -65,6 +65,7 @@ static void ConfigureServices(WebApplicationBuilder builder)
             options.IncludeTotalResourceCount = true;
             options.SerializerOptions.WriteIndented = true;
             options.SerializerOptions.Converters.Add(new JsonStringEnumConverter());
+
 #if DEBUG
             options.IncludeExceptionStackTraceInErrors = true;
             options.IncludeRequestBodyInErrors = true;
@@ -98,5 +99,8 @@ static async Task CreateDatabaseAsync(IServiceProvider serviceProvider)
     await using AsyncServiceScope scope = serviceProvider.CreateAsyncScope();
 
     var dbContext = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+    await dbContext.Database.EnsureDeletedAsync();
     await dbContext.Database.EnsureCreatedAsync();
+
+    await Seeder.CreateSampleDataAsync(dbContext);
 }

src/Examples/JsonApiDotNetCoreExample/Properties/launchSettings.json

@@ -11,16 +11,16 @@
   "profiles": {
     "IIS Express": {
       "commandName": "IISExpress",
-      "launchBrowser": false,
-      "launchUrl": "api/todoItems",
+      "launchBrowser": true,
+      "launchUrl": "api/todoItems?include=tags&filter=equals(priority,'High')",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
       }
     },
     "Kestrel": {
       "commandName": "Project",
-      "launchBrowser": false,
-      "launchUrl": "api/todoItems",
+      "launchBrowser": true,
+      "launchUrl": "api/todoItems?include=tags&filter=equals(priority,'High')",
       "applicationUrl": "https://localhost:44340;http://localhost:14140",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"