Adjust DB context generation from DB

[verdysh]

Hi,
I have EF Core of version 8.0.1 and MS SQL database. I use DB first approach so I generate DB context and entities from my DB using Scaffold-DbContext command from Visual Studio. There are few issues while generation:

1. In my DB context I have OnConfiguring method:

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
	if (!optionsBuilder.IsConfigured)
	{
		optionsBuilder.UseSqlServer("Name=ConnectionStrings:MyDb");
	}
}

This method changes and becomes as following after update:

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
	=> optionsBuilder.UseSqlServer("Name=ConnectionStrings:MyDb");

But without !optionsBuilder.IsConfigured I have some exception during runtime. If necessary, I'll show exactly the error but I hope you understand what I'm talking about.

What I want: I want it doesn't remove the condition if (!optionsBuilder.IsConfigured) while updating.

2. I have an entity class:

public partial class MyEntity
{
	...
	public MyScheduleTypeEnum ScheduleType { get; set; }
	...
}

After update MyScheduleTypeEnum becomes int.

What I want: I want to keep property type as enum.

3. I have another entity with the following property:

public Dictionary<string, string>? Data { get; set; }

Also I have the following configuration for this property:

builder
    .Property(e => e.Data)
    .HasConversion(
        v => JsonConvert.SerializeObject(v, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore }),
        v => JsonConvert.DeserializeObject<Dictionary<string, string>>(v, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore })
    );

After update this property becomes string? Data instead of Dictionary<string, string>?

What I want: I want to keep property type as Dictionary<string, string>?

Now I manually restore the code above after update. But would be great if I can get rid of this manually work with each update.

Include provider and version information

EF Core version: 8.0.1
Database provider: Microsoft.EntityFrameworkCore.SqlServer
Target framework: .NET 8.0

[ajcvickers]

Duplicate of #831. Consider using customized T4 templates for at least the first of these.