Creating Person Entity
We define entities in .Core (domain) project. We can define a Person entity (mapped to PbPersons table in database) to represent a person in phone book as shown below:
[Table("PbPersons")]
public class Person : FullAuditedEntity
{
[Required]
[MaxLength(PersonConsts.MaxNameLength)]
public virtual string Name { get; set; }
[Required]
[MaxLength(PersonConsts.MaxSurnameLength)]
public virtual string Surname { get; set; }
[MaxLength(PersonConsts.MaxEmailAddressLength)]
public virtual string EmailAddress { get; set; }
}
Person's primary key type is int (as default). It inherits FullAuditedEntity that contains creation, modification and deletion audit properties. It's also soft-delete. When we delete a person, it's not deleted by database but marked as deleted (see entity and data filters documentations for more information). We created PersonConsts in Core.Shared project for MaxLength properties. This is a good practice since we will use same values later.
public class PersonConsts
{
public const int MaxNameLength = 32;
public const int MaxSurnameLength = 32;
public const int MaxEmailAddressLength = 255;
}
We add a DbSet property for Person entity to PhoneBookDemoDbContext class defined in .EntityFrameworkCore project.
public class PhoneBookDemoDbContext : AbpZeroDbContext<Tenant, Role, User, PhoneBookDemoDbContext>
{
public virtual DbSet<Person> Persons { get; set; }
//...other entities
public PhoneBookDemoDbContext()
: base("Default")
{
}
//...other codes
}