在ASP.NET MVC5中使用Ninject注入实体框架DbContext [英] Inject Entity Framework DbContext using Ninject in ASP.NET MVC5
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问题描述
我刚进入依赖注入世界.
I have just landed in dependency injection world.
我有以下自定义DbContext-
I have the following custom DbContext-
public partial class SkyTrackerContext: DbContext
{
public SkyTrackerContext(): base()
{
Database.SetInitializer(new SkyTrackerDBInitializer());
}
}
想在此基本控制器中注入SkyTrackerContext-
Would like inject SkyTrackerContext in this base controller-
public abstract class BaseController : Controller
{
public BaseController() {}
[Inject]
public SkyTrackerContext MyDbContext { get; set; }
}
样品用量-
public class LoginController : BaseController
{
public ActionResult ValidateLogin(Login login)
{
var query = MyDbContext.Persons.Where(.....);
}
}
我应该在NinjectWebCommon.cs中写些什么来注入该上下文?
What should I write in NinjectWebCommon.cs to inject this context ?
private static IKernel CreateKernel()
{
var kernel = new StandardKernel();
try
{
kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel);
kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>();
RegisterServices(kernel);
return kernel;
}
catch
{
kernel.Dispose();
throw;
}
}
推荐答案
首先,应避免方法注入.而是使用构造函数注入.换句话说:
First, you should avoid method injection. Instead, use constructor injection. In other words:
public abstract class BaseController : Controller
{
protected readonly DbContext context;
public BaseController(DbContext context)
{
this.context = context;
}
...
}
然后,就Ninject配置而言,它非常简单:
Then, as far as the Ninject config goes, it's extremely simple:
kernel.Bind<DbContext>().To<SkyTrackerContext>().InRequestScope();
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