我需要在服务器端发布帖子或进行验证,以检查电子邮件是否唯一。
在研究中,我一直做的例子是传统的MVC应用程序,而不是api。
在许多情况下,我看到[Remote] https://docs.microsoft.com/pt-br/aspnet/core/mvc/models/validation?view=aspnetcore-2.2#remote-attribute。我尝试根据文档实施,但是调试验证了控制器中的函数均未调用。
User.cs
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using Microsoft.AspNetCore.Mvc;
namespace Base.Models
{
[Table("users")]
public partial class User
{
...
[Required]
[EmailAddress]
[Remote(action: "VerifyEmail", controller: "UserController",ErrorMessage="Email already in use")]
[Column("email", TypeName = "varchar(254)")]
public string Email { get; set; }
...
}
}
UserController.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Base.Models;
namespace Base.Controllers
{
[Route("api/users")]
[ApiController]
public class UserController : Controller
{
...
[AcceptVerbs("Get")]
public IActionResult VerifyEmail(string email)
{
//forcing it to go wrong
return Json($"Email {email} is already in use.");
}
...
}
}
有人知道如何实现吗?
答案 0 :(得分:1)
我无法发表评论,因为我缺乏足够的声誉,如果我有时间,我会去验证一下,但是我认为您的问题是[Route(“ api / users”)]。 您为装饰器指定了控制器名称,但该控制器位于其他路由之后。容易调试的方法是暂时删除Route或将“ VerifyEmail”操作放到另一个您不想改变其路由的控制器上。
答案 1 :(得分:0)
看到它没有进展,我决定进行个性化验证。
EmailUserUniqueAttribute.cs
foreach($arr as $sub){
$res[][key($sub[0]) . "s"] = array_column($sub, 'userid');
}
var_dump($res);
User.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;
using Base.Models;
namespace Core.Models
{
public class EmailUserUniqueAttribute : ValidationAttribute
{
protected override ValidationResult IsValid(
object value, ValidationContext validationContext)
{
var _context = (AppDbContext)validationContext.GetService(typeof(AppDbContext));
var entity = _context.Users.SingleOrDefault(e => e.Email == value.ToString());
if (entity != null)
{
return new ValidationResult(GetErrorMessage(value.ToString()));
}
return ValidationResult.Success;
}
public string GetErrorMessage(string email)
{
return $"Email {email} is already in use.";
}
}
}
Assimestáfuncionando,这样的问题就解决了。