Question

I’m following this example to develop a multi tenant app: Simple approach to multi-tenancy in ASP.NET MVC Part 2

Instead using StructureMap I’m using Ninject. In the example is used this inteface:

IContainerResolver – gets the IoC container for the resolved tenant

But I can’t understand how to use it with Ninject. Is some sort NinjectModule so each tenant has his proper bindings?

Can you explain to me Why is used and How I must use it with Ninject?

Answer 1

First of all I wouldn’t do such a thing in the given scenario because you can leave that up to IIS. Just deploy your app for your tenants with a different App.config have a really reliable separation of the memory.

But if you really want to go that way there is a very simple solution by loading tenant modules into one shared kernel:

public class TenantSpecificBindingsModule 
{
    TenantSpecificBindingsModule(string tenantUrl)
    {
    }

    public void Load()
    {
        this.Bind<ISomeTenantSpecifiComponent>.To<Impl>().When(GetCurrentUrl().StartsWith(tenantUrl));
    }
}

foreach tenant { kernel.Load(new TenantSpecificBindingsModule(tenant.Url));