I have a base class like that:
public class BaseClass : IEditableObject {
public BaseClass() {
}
public Guid Id { get; set; }
public void BeginEdit() {
}
public void CancelEdit() {
}
public void EndEdit() {
}
}
And I have 2 derived classes like that:
public class User : BaseClass {
[Column( "UserFirstName" )]
public string FirstName {
get;
set;
}
[Column( "UserLastName" )]
public string LastName {
get;
set;
}
}
public class School : BaseClass {
[Column( "SchoolName" )]
public string Name {
get;
set;
}
}
I am using Entity Framework Code-First and configuring these classes in my context class:
public class MyContext : DbContext {
public MyContext() : base() {
Database.SetInitializer( new MigrateDatabaseToLatestVersion<MyContext, Configuration>() );
}
public DbSet<User> Users { get; set; }
public DbSet<School> Schools { get; set; }
protected override void OnModelCreating( DbModelBuilder modelBuilder ) {
base.OnModelCreating( modelBuilder );
}
}
When I run the program database and tables are created but primary key column names are Id for each table. I want the column name to be UserId or SchoolId.
Therefore I must configure entities on model creating to change column names with TableNameId
I could do this job as well:
modelBuilder.Entity<User>().Property( i => i.Id ).HasColumnName( "UserId" );
modelBuilder.Entity<School>().Property( i => i.Id ).HasColumnName( "SchoolId" );
Assume that I have hundreds of classes, I'll make configurations one by one for each entity so this is a huge waste of time.
How can I do this job dynamically using iterate or something else I don't know?
You can use DbModelBuilder.Types<T>
method to apply your custom convention on all BaseClass
derived entities:
modelBuilder.Types<BaseClass>().Configure(c =>
c.Property(e => e.Id).HasColumnName(c.ClrType.Name + "Id")
);
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