验证MVC核心中的非输入模型

本文介绍了验证MVC核心中的非输入模型的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个操作方法，该操作方法具有对象类型输入，如下所示:

I have an action-method that have an object type Input like this:

public async Task<IActionResult> DoSomeThing([FromBody]object input, bool options) { if (options == true) { var castedInput = (A) input; if (TryValidateModel(castedInput)) { // do some thing } else { //return validation Errors; //forexample:return Error("Error1") //??!??!!??!?!?!?!??! } } else { var castedInput = (B)input; if (TryValidateModel(castedInput)) { // do some thing } else { //return validation Errors; //forexample:return Error("You must fill this parameter") //??!??!!??!?!?!?!??! } } }

在这种方法中，我首先将Input转换为ViewModel，然后对其进行验证.现在，我想返回在模型注释上设置的验证错误".我该怎么办?

In this method first I cast Input to my ViewModel then validate it. now I want to return my Validation Errors that I set on annotations of my model. How can I do this?

我的视图模型:

public class A { [Required(ErrorMessage = "Error1")] string Phone; . . . } public class B { [Required(ErrorMessage = "You must fill this parameter")] string Name; . . . }

推荐答案

以下是一个演示示例:

动作:

public JsonResult DoSomeThing([FromBody]object input,bool options) { var model = new Object(); if (options) { model = JsonConvert.DeserializeObject<A>(input.ToString()); } else { model = JsonConvert.DeserializeObject<B>(input.ToString()); } string messages = ""; if (!TryValidateModel(model)) { messages = string.Join("; ", ModelState.Values .SelectMany(x => x.Errors) .Select(x => !string.IsNullOrWhiteSpace(x.ErrorMessage) ? x.ErrorMessage : x.Exception.Message.ToString())); } return Json(messages); }

型号:

public class A { [Required(ErrorMessage = "Error1")] public string Phone { get; set; } } public class B { [Required(ErrorMessage = "You must fill this parameter")] public string Name { get; set; } }

结果: