Command.Seeder 1.0.2

🌱 Seeder Command Dispatcher

A lightweight database seeding framework for .NET, inspired by Laravel’s db:seed command. Easily discover and run all seeders dynamically in ASP.NET Core or Console projects. For any problems or new ideas please email me at: hossein.holy.shrine@gmail.com

✨ Features

• 🚀 Command-style seeding dotnet run db:seed
• 🔍 Auto-discovery of all ISeeder implementations
• ⚡ Run one or multiple seeders at once
• 🛠 Works with any EF Core DbContext
• 🌐 Works in Web APIs and Console Apps
• 🔄 Centralized configuration for flexible DbContext swapping
• 📥 Installation

🚀 Quick Start 1️⃣ Define a Seeder

using YourProject.Seeders;
using Microsoft.EntityFrameworkCore;
using Seeder.Seeders;

public class DegreeSeeder : ISeeder
{
    private readonly MyDbContext _db;
    public DegreeSeeder(MyDbContext db) => _db = db;

    public async Task SeedAsync()
    {
        var degrees = new[]
        {
            new Degree { Name = "low" },
            new Degree { Name = "medium" },
            new Degree { Name = "hight" },
        };

        _db.Degrees.AddRange(degrees);
        await _db.SaveChangesAsync(cancellationToken);
    }
}

2️⃣ Register Seeders In ASP.NET Core Program.cs:

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddDbContext<MyDbContext>(options =>
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection"))
);

// Register all seeders
builder.Services.AddAllSeeders();

var app = builder.Build();

// Attach seeder dispatcher
SeederCommandDispatcher.ConfigureWithDbContext<MyDbContext>(app.Services);

if (await SeederCommandDispatcher.TryExecuteCommandAsync(args))
{
    return; // Run seeder and exit
}

app.Run();

In Console App:

using Microsoft.Extensions.Hosting;
using Microsoft.EntityFrameworkCore;

using var host = Host.CreateDefaultBuilder(args)
    .ConfigureServices((context, services) =>
    {
        services.AddDbContext<MyDbContext>(options =>
            options.UseSqlServer(context.Configuration.GetConnectionString("DefaultConnection")));
        services.AddAllSeeders();
    })
    .Build();

SeederCommandDispatcher.ConfigureWithDbContext<MyDbContext>(host.Services);
if (await SeederCommandDispatcher.TryExecuteCommandAsync(args)) return;

3️⃣ Run Seeders

Run all seeders:

dotnet run db:seed

or

dotnet run db:seed all

Run a specific seeder:

dotnet run db:seed DegreeSeeder

Run multiple seeders:

dotnet run db:seed DegreeSeeder UserSeeder RoleSeeder

📊 Example Output

> dotnet run db:seed DegreeSeeder
[INFO] Running DegreeSeeder...
[OK]   Inserted 3 degrees

📖 Requirements

• .NET 9.0 or higher
• EF Core (SQL Server, PostgreSQL, MySQL, SQLite supported)

📝 License This project is licensed under the MIT License.