CustomCandidateNamingService

README.md

How to customize naming convention of EF Core scaffolding in 1.0.0/preview2.

Warning: this uses internal APIs which are not officially supported. Future releases may break this.

On command line

dotnet ef dbcontext scaffold "Server=(localdb)\mssqllocaldb;Database=Northwind;Integrated Security=true" Microsoft.EntityFrameworkCore.SqlServer

Output

Project snake (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
Naming request: Order_Details
Naming request: Photo
...

Program.cs

using System;
using Microsoft.EntityFrameworkCore.Scaffolding.Internal;
using Microsoft.Extensions.DependencyInjection;

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
        }
    }

    public class Startup
    {
        // Not officially supported. Using this is "I know what I'm doing" territory
        public void ConfigureDesignTimeServices(IServiceCollection services)
        {
            // override the defautlt naming service
            services.AddSingleton<CandidateNamingService, CustomCandidateNamingService>();
        }
    }

    public class CustomCandidateNamingService : CandidateNamingService
    {
        // overrides https://github.com/aspnet/EntityFramework/blob/1.0.0/src/Microsoft.EntityFrameworkCore.Relational.Design/Internal/CandidateNamingService.cs#L25-L56
        public override string GenerateCandidateIdentifier(string original)
        {
            Console.WriteLine("Naming request: " + original);
            
            // original will be the table name, column name, index name, etc.
            // In this override, you are free to do whatever you want.
            // the base class will return PascalCase
            var pascalCaseify = base.GenerateCandidateIdentifier(original);
            
            return pascalCaseify;
        }
    }
}

project.json

{
  "version": "1.0.0-*",
  "buildOptions": {
    "debugType": "portable",
    "emitEntryPoint": true
  },
  "dependencies": {},
  "frameworks": {
    "netcoreapp1.0": {
      "dependencies": {
        "Microsoft.NETCore.App": {
          "type": "platform",
          "version": "1.0.0"
        },
        "Microsoft.EntityFrameworkCore.SqlServer": "1.0.0",
        "Microsoft.EntityFrameworkCore.SqlServer.Design": "1.0.0",
        "Microsoft.EntityFrameworkCore.Design": "1.0.0-preview2-final"
      },
      "imports": "dnxcore50"
    }
  },
  "tools": {
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final"
  }
}

@Alexct72 I tried with EF Core 2.0, I got it.
Check this, https://github.com/arichika/EFCore2.0-Scaffold-DBContext-CustomCandidateNamingService

you must have move to new class inherits IDesignTimeServices the method ConfigureDesignTimeServices().
e.g. https://github.com/arichika/EFCore2.0-Scaffold-DBContext-CustomCandidateNamingService/blob/master/src/ScaffoldMyDb/MyScaffoldingDesignTimeServices.cs