misc

AobaV2/Models/BsonIdModelBinderProvider.cs

@@ -0,0 +1,31 @@
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+using MongoDB.Bson;
+
+namespace AobaV2.Models;
+
+public class BsonIdModelBinderProvider : IModelBinderProvider
+{
+	public IModelBinder? GetBinder(ModelBinderProviderContext context)
+	{
+		if (context.Metadata.ModelType == typeof(ObjectId))
+			return new BsonIdModelBinder();
+		return default;
+	}
+}
+
+public class BsonIdModelBinder : IModelBinder
+{
+	public Task BindModelAsync(ModelBindingContext bindingContext)
+	{
+		var value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
+		if (value == ValueProviderResult.None)
+			return Task.CompletedTask;
+
+		if (ObjectId.TryParse(value.FirstValue, out var id))
+			bindingContext.Result = ModelBindingResult.Success(id);
+		else
+			bindingContext.Result = ModelBindingResult.Failed();
+
+			return Task.CompletedTask;
+	}
+}