I am having a lot of trouble trying to get my View in MVC to pass two primitive values retrieved from the user, and pass them back to a controller, while the model used by the view is a totally different nested model.
I tried passing also passing the whole Product or ProducWithAttributes but it always shows up as null in the AddToCart controller.
"Basic" Classes
namespace EcommerceWebsite_1.Models
{
using System;
using System.Collections.Generic;
public partial class Prod_Attribute
{
public int product_id { get; set; }
public string property_name { get; set; }
public string property_value { get; set; }
public virtual Product Product { get; set; }
}
}
namespace EcommerceWebsite_1.Models
{
using System;
using System.Collections.Generic;
public partial class Product
{
public int current_quantity { get; set; }
public int product_id { get; set; }
public string name { get; set; }
public decimal price { get; set; }
public string cat_name { get; set; }
public byte[] image { get; set; }
public Nullable<int> Merchandise_payment_order_id { get; set; }
public bool out_of_stock { get; set; }
public Nullable<int> max_amnt_per_order { get; set; }
}
}
Classes(nested in Products Controller)
public class ProductWithAttributes
{
public Product Prod { get; set; }
public List<Prod_Attribute> Prod_attributes { get; set; }
public int selectedQuant { get; set; }
}
public class ProductWithQuant
{
public int prod_id { get; set; }
public int selectedQuant { get; set; }
}
"Calling" Controller
public ActionResult DetailsForUser(int id)
{
Product product = db.Products.Find(id);
List<Prod_Attribute> attributes_vals = db.Prod_Attribute.Where(p => p.product_id == id).OrderBy(c => c.property_name).ToList();
int quantity_selection;
if (product.max_amnt_per_order!= null)
{
quantity_selection = (int)product.max_amnt_per_order;
}
else
{
quantity_selection = product.current_quantity;
}
int[] quantity_selection_list = new int[quantity_selection];
for (int i=1; i<= quantity_selection; i++)
{
quantity_selection_list[i - 1] = i;
}
ViewBag.Quantities = quantity_selection_list;
return View(new ProductWithAttributes
{
Prod = product,
Prod_attributes = attributes_vals
});
}
View
@using EcommerceWebsite_1.Models
@model EcommerceWebsite_1.Controllers.ProductsController.ProductWithAttributes
@{
ViewBag.Title = "Details";
}
<h2>Details</h2>
<div>
<h4>Product</h4>
<hr />
<dl class="dl-horizontal">
<dt>
@Html.DisplayNameFor(model => model.Prod.name)
</dt>
<dd>
@Html.DisplayFor(model => model.Prod.name)
</dd>
<dt>
@Html.DisplayNameFor(model => model.Prod.price)
</dt>
<dd>
@Html.DisplayFor(model => model.Prod.price)
</dd>
<dd>
@Html.DisplayFor(model => model.Prod.image)
</dd>
<dt>
@Html.DisplayNameFor(model => model.Prod.max_amnt_per_order)
</dt>
<dd>
@Html.DisplayFor(model => model.Prod.max_amnt_per_order)
</dd>
@foreach (Prod_Attribute attr in Model.Prod_attributes)
{
<dt>
@Html.DisplayFor(model => attr.property_name)
</dt>
<dd>
@Html.DisplayFor(model => attr.property_value)
</dd>
}
<dd class="form-group">
@Html.Label("Desired Quantity: ", htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.DropDownListFor(model => model.selectedQuant, new SelectList(ViewBag.Quantities), "Select Quantity...", htmlAttributes: new { @class = "form-control" })
@Html.ValidationMessage("", new { @class = "text-danger" })
</div>
</dd>
</dl>
</div>
<p>
@Html.ActionLink("Add to Cart", "AddtoCart", new { product_id = Model.Prod.product_id, selectedQuant = Model.selectedQuant})
@Html.ActionLink("Back to List", "IndexByCategory", new { cat_name = Model.Prod.cat_name })
</p>
Final Controller(...which only shows null arguments)
public ActionResult AddToCart([Bind(Include = "product_id, selectedQuan")] ProductWithQuant prod_added_To)
{
if ((System.Web.HttpContext.Current.User != null) && System.Web.HttpContext.Current.User.Identity.IsAuthenticated)
{
Product product = db.Products.Find(prod_added_To.prod_id);
Added_to newAddition = new Added_to
{
product_id = prod_added_To.prod_id,
member_id = User.Identity.GetUserId(),
time_product_added = DateTime.Now,
quantity = prod_added_To.selectedQuant,
discounted_price = (decimal) CalcDiscountPrice(product)
};
db.Added_to.Add(newAddition);
db.SaveChanges();
return View(product);
}
else
{
string returnUrl = Request.Url.Host + "/Products/IndexForUser/" + prod_added_To.prod_id.ToString();
return RedirectToAction("Login", "Account", returnUrl );
}
The Model of the view is a object having another object Product and a list of Objects, Prod_attributes. I am trying to get the selected quantity value of the product that the user wants to purchase and then pass back to another controller just the product id and the selected quantity. Alternatively, I could pass the entire Product object and selected quantity. I have tried different combinations but nothing is working because I keep getting a null received by the final controller, Login. What am I doing wrong? Many thanks in advance. I need a solution as soon as possible.
