英文:
Custom result filter vs InvalidModelStateResponseFactory in ASP.NET Core 6.0
问题
You can use a custom result filter inherited by IResultFilter to return a response in case of a model-validation failure. Alternatively, you can configure ApiBehaviorOptions in Program.cs to handle invalid model states.
Scenario for Using a Custom Result Filter (FailedValidationResultFilter):
-
Pros: This approach allows for more fine-grained control over how validation failures are handled. You can implement custom logic inside the
FailedValidationResultFilterto create aProblemDetailsresponse tailored to your specific needs. It's particularly useful when you have complex validation requirements. -
Cons: Requires additional code and might be more suitable for advanced scenarios.
Scenario for Using ApiBehaviorOptions in Program.cs:
-
Pros: This approach is simpler and requires less custom code. It leverages the built-in
ApiBehaviorOptionsconfiguration to handle validation errors consistently across the application. -
Cons: It may offer less flexibility compared to a custom result filter if you have highly specific requirements for handling validation failures.
Ultimately, the choice between these two approaches depends on your project's needs:
-
If you need precise control over the response generation for model-validation failures and have complex requirements, the custom result filter (
FailedValidationResultFilter) is a better choice. -
If you prefer a simpler and more consistent approach for handling validation errors throughout your application, using
ApiBehaviorOptionsinProgram.csis a more straightforward option.
Consider your project's complexity and requirements to decide which approach aligns better with your development goals.
英文:
I can use a custom result filter inherited by IResultFilter to return response in case of a model-validation failure:
public class FailedValidationResultFilter : IResultFilter
{
public void OnResultExecuting(ResultExecutingContext context)
{
if (context.ModelState.IsValid)
return;
//other logic to create the ProblemDetails response
}
public void OnResultExecuted(ResultExecutedContext context)
{
}
}
Or I can use this in Program.cs:
var builder = WebApplication.CreateBuilder(args);
builder.Services
.AddControllers();
builder.Services
.Configure<ApiBehaviorOptions>(x => x.InvalidModelStateResponseFactory = ctx => new ValidationProblemDetailsResult(););
ValidationProblemDetailsResult:
public class ValidationProblemDetailsResult : IActionResult
{
public async Task ExecuteResultAsync(ActionContext context)
{
//logic here and then followed by this:
var problemDetails = new ProblemDetails
{
Type = "",
Title = "Invalid parameters",
Status = StatusCodes.Status400BadRequest,
Detail = "Your request parameters didn't validate.",
Instance = "",
//Extensions =
};
var objectResult = new ObjectResult(problemDetails) { StatusCode = problemDetails.Status };
await objectResult.ExecuteResultAsync(context);
}
}
Question: which one should I prefer and why? Also, please provide scenario(s), to better understand their uses/pros and cons.
答案1
得分: 1
在 WeiApi 项目中，[ApiController] 属性会使模型验证错误自动触发 HTTP 400 响应。
你的代码如下：
builder.Services.Configure<ApiBehaviorOptions>(x => x.InvalidModelStateResponseFactory = ctx => new ValidationProblemDetailsResult());
该代码替换了默认的 BadrequestResult，当它自动触发 400 响应时（换句话说，仅当你的控制器附带 [ApiController] 属性并应用于控制器中的所有操作时），你可以查看这个相关的文档。
通过使用过滤器，你可以选择将其应用于特定的控制器/操作或所有操作，无论控制器是否附带 ApiControoler 属性，有关此内容可以查看文档。
英文:
In WeiApi projects,the [ApiController] attribute makes model validation errors automatically trigger an HTTP 400 response.
and your codes
builder.Services
.Configure<ApiBehaviorOptions>(x => x.InvalidModelStateResponseFactory = ctx => new ValidationProblemDetailsResult(););
replaced the default BadrequestResult with your custom result,when it trigger 400 resopnse automaticlly(In an other words,it works only when your controller is attached with [ApiController] attribute and applied to all actions in the controller ) ,you could check this document related
With a filter,you could choose to apply it to certain controller/action or all actions whenever the controller is attached with ApiControoler Attribute or not,the document related
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