Setup mongoDB with Entity Framework Core

Models

public abstract class AbstractModel
{
      public string Id { get; set; } = string.Empty;
      public DateTime? CreatedOn { get; set; }
      public string? CreatedBy { get; set; }
}

public sealed class User: AbstractModel
{
      public string EmailAddress{ get; set; } = string.Empty;
      public string? FirstName{ get; set; }
      public Role[] Roles {get; set;} = [];
}

 public sealed Record Role
{
      public string Name {get; set; } = string.Empty;
}

Entity Type Builder – Configurations

public static class UserConfiguration
{
   public static void Configure(EntityTypeBuilder builder)
   {
      builder.Property(x => x.Id).HasConversion<ObjectId>().HasElementName("_id");
      builder.ToCollection("users")
      builder.Property(c => c.CreatedOn).HasElementName("_created");
      builder.Property(c => c.CreatedBy).HasElementName("_created_by");
      builder.Property(c => c.EmailAddress).HasElementName("email_address");
      builder.Property(c => c.FirstName).HasElementName("first_name");
    
     builder.OwnsOne(u => u.Roles, role =>
    {
          role .HasElementName("role");
          role .Property(c => c.Name).HasElementName("name");
    });
  }
}

Configuration of models

public sealed class IAMDbContext (DbContextOptions options) : DbContext(options)
{
   public DbSet Users { get; init; }

   protected override void OnModelCreating(ModelBuilder modelBuilder)
   { 
       UserConfiguration.Configure(modelBuilder.Entity<User>());
       base.OnModelCreating(modelBuilder);
   }
}

Register Context

public static IServiceCollection RegisterContext(this IServiceCollection services,  strinc connectionstring, string databasename)
{
   services.AddOptions();
   
   services.AddDbContext<IAMDbContext>(options => {
     options.UseMongoDB(connectionstring, databasename);
     options.EnableSensitiveDataLogging();
     options.EnableDetailedErrors();
     options.EnableSensitiveDataLogging(true);
     options.EnableServiceProviderCaching();
 });

 return services;
}