在Mono中启用实体框架迁移 [英] Enable Entity Framework migrations in Mono

问题描述

我已经在Mac OS上使用Xamarin Studio开始构建一个ASP.NET MVC3项目。我现在想为项目添加新的属性和模型，但是在我的生活中，我无法了解如何运行Nuget软件包管理器控制台，以便运行Enable-Migrations命令。

我要求太多了吗？这是可能的还是我必须回到Windows上的Visual Studio？

解决方案

所有的实体框架迁移命令只是在底层API上的薄包装。要启用迁移，只需在项目中创建一个派生自 DbMigrationsConfiguration< TContext> 的新类。

code> Add-Migration 使用类似于以下的代码。

  var config = new MyMigrationsConfiguration（）; 
 var scaffolder = new MigrationScaffolder（config）; 
 var migration = scaffolder.Scaffold（Migration1）; 
 
 File.WriteAllText（migration.MigrationId +.cs，migration.UserCode）; 
 
 File.WriteAllText（migration.MigrationId +.Designer.cs，migration.DesignerCode）; 
 
使用（var writer = new ResXResourceWriter（migration.MigrationId +.resx））
 {
 foreach（var resource in migration.Resources）
 {
 writer.AddResource（resource.Key，resource.Value）; 
} 
} 
  

对于更新数据库请参阅 Running& Rowan Miller编写的代码迁移脚本。

I've started building an ASP.NET MVC3 project on Mac OS using Xamarin Studio. I now want to add new properties and models to the project but I can't for the life of me work out how to run the Nuget Package Manager console in order to run the Enable-Migrations command.

Am I asking too much? Is this possible or will I have to go back to Visual Studio on Windows?

解决方案

All of the Entity Framework Migrations commands are just thin wrappers over an underlying API. To enable migrations, simply create a new class that derives from DbMigrationsConfiguration<TContext> in your project.

For Add-Migration use code similar to the following.

var config = new MyMigrationsConfiguration();
var scaffolder = new MigrationScaffolder(config);
var migration = scaffolder.Scaffold("Migration1");

File.WriteAllText(migration.MigrationId + ".cs", migration.UserCode);

File.WriteAllText(migration.MigrationId + ".Designer.cs", migration.DesignerCode);

using (var writer = new ResXResourceWriter(migration.MigrationId + ".resx"))
{
    foreach (var resource in migration.Resources)
    {
        writer.AddResource(resource.Key, resource.Value);
    }
}

For Update-Database see Running & Scripting Migrations from Code by Rowan Miller.

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