Instance of IOrderProcessingService

Howdy!

How to get an instance of IOrderProcessingService inside a controlle?

I need to check order status.

Thanks!

-Alberto

Inject it using controller.

https://www.nopcommerce.com/docs/74/frequently-asked-development-questions.aspx (see "Inversion of Control and Dependency Injection" section)

I didnt get the point.

Could you provide some sample code of how to do that?

Thanks!



My Code:

public class MyRandomController : BaseNopController, IDependencyRegistrar
{

       [HttpPost]
        public ActionResult MyAction(FormCollection model)
        {
                //Order Instance
        }

       public void Register(Autofac.ContainerBuilder builder, Core.Infrastructure.ITypeFinder typeFinder)
        {
            
        }

        public int Order
        {
            get { throw new NotImplementedException(); }
        }

}

Just have a look at any other controller and its constructor

public class MyRandomController : BaseNopController
{
         private readonly IOrderProcessingService _opvService;

         MyRandomController(IOrderProcessingService opvService)
         {
            this._opvService = opvService;
         }

       [HttpPost]
        public ActionResult MyAction(FormCollection model)
        {
                //Order Instance - opvService
        }

}

I tried the above to add a new custom controller, but I get a 'No parameterless constructor defined for this object' error when trying to load the controller.

I tried adding the following code to the DependencyRegistrar in Nop.Web.Infrastructure, but still same error.
builder.RegisterType<ProductsController>()
                .WithParameter(ResolvedParameter.ForNamed<ICacheManager>("nop_cache_static"));

What else do we need to do do add a custom controller?

My custom controller is based on the CatalogController, same constructor and fields.

Thanks

Is this in a plugin or in the main code?  You shouldn't have to register controllers individually.

This was in the main code, Web.

I got around it by having a constructorless parameter and then using the dependency resolver to resolve each service that i would need:

this._categoryService = DependencyResolver.Current.GetService<ICategoryService>();
this._productService = DependencyResolver.Current.GetService<IProductService>();

Not sure if this could cause problems but it works for now.

It's not the "right" way because you can't unit test it.

a.m. wrote:

FAQ URL seems to have changed to http://docs.nopcommerce.com/display/en/Inversion+of+Control+and+Dependency+Injection

jreate wrote:

Yes it was the cause. For all your parametered new controllers you need to register it in the dependencyregistrar.cs

If it is in a plugin you need to put it in the plugin dependencyregistrar.cs