我有适用于Model的以下代码,也适用于初始化程序。 但是,status属性是作为INT创建的,我希望它是STATUS表的外键。
这可能,或者我需要删除ENUM并创建一个类吗?
public class Applicant
{
[DatabaseGenerated(System.ComponentModel.DataAnnotations.DatabaseGeneratedOption.Identity)]
public int ApplicantID { get; set; }
[Required(ErrorMessage = "Name is required")]
[StringLength(20, MinimumLength = 3, ErrorMessage="Name should not be longer than 20 characters.")]
[Display(Name = "First and LastName")]
public string name { get; set; }
[Required(ErrorMessage = "Telephone number is required")]
[StringLength(10, MinimumLength = 3, ErrorMessage = "Telephone should not be longer than 20 characters.")]
[Display(Name = "Telephone Number")]
public string telephone { get; set; }
[Required(ErrorMessage = "Skype username is required")]
[StringLength(10, MinimumLength = 3, ErrorMessage = "Skype user should not be longer than 20 characters.")]
[Display(Name = "Skype Username")]
public string skypeuser { get; set; }
public byte[] photo { get; set; }
public virtual ICollection<ApplicantPosition> applicantPosition { get; set; }
}
public class ApplicantPosition
{
[Key]
[Column("ApplicantID", Order = 0)]
public int ApplicantID { get; set; }
[Key]
[Column("PositionID", Order = 1)]
public int PositionID { get; set; }
public virtual Position Position { get; set; }
public virtual Applicant Applicant { get; set; }
[Required(ErrorMessage = "Applied date is required")]
[DisplayFormat(DataFormatString = "{0:d}", ApplyFormatInEditMode = true)]
[Display(Name = "Date applied")]
public DateTime appliedDate { get; set; }
public int StatusValue { get; set; }
public Status Status
{
get { return (Status)StatusValue; }
set { StatusValue = (int)value; }
}
}
public class ApplicationPositionHistory
{
[DatabaseGenerated(System.ComponentModel.DataAnnotations.DatabaseGeneratedOption.Identity)]
public int ApplicationPositionHistoryID { get; set; }
public ApplicantPosition applicantPosition { get; set; }
public Status oldStatus { get; set; }
public Status newStatus { get; set; }
[StringLength(500, MinimumLength = 3, ErrorMessage = "Commebnts should not be longer than 500 characters.")]
[Display(Name = "Comments")]
public string comments { get; set; }
[DisplayFormat(DataFormatString = "{0:d}", ApplyFormatInEditMode = true)]
[Display(Name = "Date")]
public DateTime dateModified { get; set; }
}
public enum Status
{
Applied,
AcceptedByHR,
AcceptedByTechnicalDepartment,
InterviewedByHR,
InterviewedByTechnicalDepartment,
InterviewedByGeneralManager,
AcceptedByGeneralManager,
NotAccepted
}
public class HRContext : DbContext
{
public DbSet<Position> Positions { get; set; }
public DbSet<Applicant> Applicants { get; set; }
public DbSet<ApplicantPosition> ApplicantsPositions { get; set; }
public DbSet<ApplicationPositionHistory> ApplicationsPositionHistory { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Position>().ToTable("Position");
modelBuilder.Entity<Applicant>().ToTable("Applicant");
modelBuilder.Entity<ApplicantPosition>().ToTable("ApplicantPosition");
modelBuilder.Entity<ApplicationPositionHistory>().ToTable("ApplicationsPositionHistory");
modelBuilder.Entity<Position>().Property(c => c.name).IsRequired();
modelBuilder.Entity<Applicant>().Property(c => c.name).IsRequired();
modelBuilder.Entity<ApplicantPosition>().Property(c => c.appliedDate).IsRequired();
base.OnModelCreating(modelBuilder);
}
}
答案 0 :(得分:1)
如果您希望Status
成为自动创建的表格,则必须将其创建为class
。
其他方法是实现custom database initializer并手动执行SQL来创建表,用数据填充它并从相关表创建引用约束。
顺便说一下。枚举不是实体,如果使用枚举,则不应将其建模为表格。应在数据库中使用Check constraint来限制Status
列的值(同样,您必须在自定义初始化程序中手动创建约束)。