Entity Framework Core 2 – Pluralization and Singularization

Entity Framework Core 2 was released on August 14th. It brought new features.

On this article I will explain one of them : Pluralization and Singularization

There is a new IPluralizer interface. It can be used to pluralize table names when EF is generating the database (dotnet ef database update) or entities when generating classes from it (Scaffold-DbContext). The way to use it is somewhat tricky, as we need to have a class implementing IDesignTimeServices, and this class will be discovered automatically by these tools.

In this example I provide a custom implementation with the Nuget package Inflector

Example:

public class CustomPluralizer : IPluralizer
{
   public string Pluralize(string name)
   {
      return Inflector.Inflector.Pluralize(name) ?? name;
   }
   public string Singularize(string name)
   {
      return Inflector.Inflector.Singularize(name) ?? name;
   }
}

public class CustomDesignTimeServices : IDesignTimeServices
{
   public void ConfigureDesignTimeServices(IServiceCollection services)
   {
     services.AddSingleton<IPluralizer, CustomPluralizer>();
   }
}

That’s it 🙂