ED 代码第一个一对多关系问题 - ASP 身份

Question

我正在为 ASP 身份配置数据库，但遇到了障碍。

我想在两个表之间创建 One to Many 关系，它们是 ApplicationUser 和 OrganisationUnit。

一个OrganisationUnit可以有多个ApplicationUsers，其中一个ApplicationUser只属于一个OrganisationUnit

当我添加迁移并更新数据库时，我在执行期间遇到错误:-

System.Data.SqlClient.SqlException: The INSERT statement conflicted with the FOREIGN KEY constraint "FK_dbo.AspNetUsers_dbo.OrganisationUnits_OrganisationUnitRefId". The conflict occurred in database "DefaultConnection", table "dbo.OrganisationUnits", column 'OrganisationUnitId'.

这是我要创建的表：-

public class ApplicationUser : IdentityUser
    {
        [Required]
        [MaxLength(100)]
        public string Forename { get; set; }

        [Required]
        [MaxLength(100)]
        public string Surname { get; set; }

        [Required]
        public DateTime DateCreated { get; set; }

        public Guid OrganisationUnitId { get; set; }

        [ForeignKey("OrganisationUnitId")]
        public virtual OrganisationUnit OrganisationUnit { get; set; }

    }



  public class OrganisationUnit
        {

            public OrganisationUnit()
            {
                ApplicationUsers = new List<ApplicationUser>();
            }


            public Guid Id { get; set; }

            [Required]
            [MaxLength(100)]
            public string Name { get; set; }

            [Required]
            [MaxLength(100)]
            public string Telephone { get; set; }
            public virtual ICollection<ApplicationUser> ApplicationUsers { get; set; }
        }

在我的 Configuration.cs 种子方法中有以下代码：-

protected override void Seed(ApplicationDbContext context)
        {
            //  This method will be called after migrating to the latest version.

            var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));

            var ou = new OrganisationUnit()
            {
                Id = Guid.NewGuid(),
                Name = "Group1",
                Telephone = "1234567890",
            };

            var user = new ApplicationUser()
            {
                UserName = "SuperPowerUser",
                Email = "derek@rdsadfasdf.com",
                EmailConfirmed = true,
                Forename = "Derek",
                Surname = "Rivers",
                DateCreated = DateTime.Now.AddYears(-3),
                OrganisationUnitId = ou.Id
            };

            userManager.Create(user, "MySuperP@ssword!");
        }
    }

Answer 1

你应该试试 :

        var user = new ApplicationUser()
        {
            UserName = "SuperPowerUser",
            Email = "derek@rdsadfasdf.com",
            EmailConfirmed = true,
            Forename = "Derek",
            Surname = "Rivers",
            DateCreated = DateTime.Now.AddYears(-3),
            OrganisationUnit = ou
        };

根据您的语法（仅提供 FK），您假设该组织存在。

ED 代码第一个一对多关系问题 - ASP 身份

ED Code First One to Many Relationship Issue - ASP Identity

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