Can I Navigate Directly to a Plugin View?

mholyfield wrote:

Hi Monte,

You actually don't need to specifically inherit IController. BaseNopController already inherits IController, where the full hierarchy is:

BaseNopController -> Controller -> ControllerBase -> IController

Ahh yes.  I had not used the correct controller name.  This works for me now.  Thank you very much!

mholyfield wrote:

No problem. :)

Thank you for your posts.
I changed the following line in TrackingController class from

    public class TrackingController : Controller

to

    public class TrackingController : BaseNopController

Now it finds the controller :)

although it still does not work cause I get a different error

Attempt by method 'Nop.Plugin.Other.ProductViewTracker.Controllers.TrackingController.Index(Int32)' to access method 'System.Web.Mvc.Controller.Content(System.String)' failed.

:(

christophad wrote:

There shouldn't be any different whether you inherit from Controller or BaseNopController.

Mind to share the code in your Controller that cause the error? :)

Here it is
using System.Web.Mvc;
using Nop.Core;
using Nop.Core.Domain.Catalog;
using Nop.Plugin.Other.ProductViewTracker.Domain;
using Nop.Plugin.Other.ProductViewTracker.Services;
using Nop.Services.Catalog;
using Nop.Services.Customers;
using Nop.Core.Plugins;
using Nop.Web.Controllers;

namespace Nop.Plugin.Other.ProductViewTracker.Controllers
{
    public class TrackingController : BaseNopController
    {
        private readonly IProductService _productService;
        private readonly IViewTrackingService _viewTrackingService;
        private readonly IWorkContext _workContext;

        public TrackingController(IWorkContext workContext,
            IViewTrackingService viewTrackingService,
            IProductService productService,
            IPluginFinder pluginFinder)
        {
            _workContext = workContext;
            _viewTrackingService = viewTrackingService;
            _productService = productService;
        }

        [ChildActionOnly]
        public ActionResult Index(int productId)
        {
            //Read from the product service
            Product productById = _productService.GetProductById(productId);

            //If the product exists we will log it
            if (productById != null)
            {
                //Setup the product to save
                var record = new TrackingRecord();
                record.ProductId = productId;
                record.ProductName = productById.Name;
                record.CustomerId = _workContext.CurrentCustomer.Id;
                record.IpAddress = _workContext.CurrentCustomer.LastIpAddress;
                record.IsRegistered = _workContext.CurrentCustomer.IsRegistered();

                //Map the values we're interested in to our new entity
                _viewTrackingService.Log(record);
            }

            //Return the view, it doesn't need a model
           // return Content("");
            return View();
        }
    }
}



The code for the whole plugin can be found here https://www.nopcommerce.com/docs/75/plugin-with-data-access.aspx

christophad wrote:

I don't see any problem with your code (or rather the sample code) except that the call to

return View();

might fail in a plugin. What errors are you getting currently, and how are you accessing the action (as in what are the code you using in @Html.Action)? :)

I did what exactly the tutorial says. Inside ProductTemplate.SingleVariant.cshtml and ProductTemplate.VariantsInGrid.cshtml  I added the following line
@Html.Action("Index", "Tracking", new { productId = Model.Id })

Inside the trackingcontroller I used both return Content(""); and return View(); but both failed

Apart from that. I have one more question. The tutorial suggests creating a plugin using Dependency Injection. To be honest I have not really understood how dependency injection works. Later on I saw how the others plugins are created and they do not use dependency injection. And my question is. Whenever I create a new widget is it obligatory to use Dependency Injection or I can create it just using Model, View Controller Pattern as a normal MVC application?

Thank you very much in advance.
You are very helpfull

Any plugin using Services will use Dependency Injection.  In a nutshell, all you need to do is create a local variable to reference the service and assign that variable in the class constructor.  E.g.

    public partial class PurchasedAllProductsDiscountRequirementRule : BasePlugin, IDiscountRequirementRule
    {
        private readonly IOrderService _orderService;

        public PurchasedAllProductsDiscountRequirementRule(IOrderService orderService)
        {
            this._orderService = orderService;
        }

(and add appropriate "using"s to reference the services)