torrent-man/src/Data/TorrentManagerContextFactory.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;

namespace TransmissionRssManager.Data
{
    // This class is used by Entity Framework Core tools to create migrations
    public class TorrentManagerContextFactory : IDesignTimeDbContextFactory<TorrentManagerContext>
    {
        public TorrentManagerContext CreateDbContext(string[] args)
        {
            var optionsBuilder = new DbContextOptionsBuilder<TorrentManagerContext>();
            optionsBuilder.UseNpgsql("Host=localhost;Database=torrentmanager;Username=postgres;Password=postgres");
            return new TorrentManagerContext(optionsBuilder.Options);
        }
    }
}