New item type

Ivan Marijanović

Posted on 17/09/2018 16:33:52

Hi there,

I created new Item type and would like to combine the products groups and indvidual links to blogs. On this new item type I added several paragraphs which I use to enter info and make it link to the blog and also several items of type "Product" which I would like to use to add product groups and render it as links to products groups so that user can have in one paragraph links to products and/or blogs as he wish.

Issue I am having is that even I add some product groups to Product item type when I try to access individual products-groups like this:

@foreach(var groups in @Model.Item.GetItems("Products2"))

I allways get error:

Exception in template (\Designs\Rapido\Paragraph\CombinedProdAndBlogs.cshtml): System.NullReferenceException: Object reference not set to an instance of an object."

I can access other elements on page like this: Model.Item.GetItem("Blogs_1").GetString("Link") but cannot get around to access linked products groups.

Thank you in advance!

Ivan

Replies

Nicolai Pedersen

Posted on 17/09/2018 16:44:19

Hi Ivan

You need to show us the entire item type definition (screendump and maybe also add the XML definition in zip). And also the entire template.

Thanks, Nicolai

Ivan Marijanović

Posted on 17/09/2018 17:04:32

Hi Nicolai

Thank you for quick response.

Attached I am sending screenshot of Item definition (where I can find xml) and also template I am using to render view.

Ivan

CombinedProdAndBlogs.cshtml

Nicolai Pedersen

Posted on 17/09/2018 17:18:32

Hi Ivan

The item type xml can be found in filemanager, /System/ItemTypes

Please attach your template in zip as well. cshtml files are not accepted as a download for security reasons...

Thanks, Nicolai

Ivan Marijanović

Posted on 17/09/2018 17:28:21

Here it is!

Ivan

NewItem.zip

Nicolai Pedersen

Posted on 17/09/2018 18:11:16

You use "GetItem" method on a field of type product - that will not work, since that will give you an itemViewModel.

Please read the documentation on how to use viewmodels found here: https://doc.dynamicweb.com/template-tags/introduction/concept/viewmodels

When you have a product you need to use the generic GetValue: https://doc.dynamicweb.com/api/html/9ccccd1a-f1f5-567e-1654-7d7a974c8d4b.htm

In 9.4 like this: @Model.Item.GetValue<Dynamicweb.Ecommerce.Frontend.ProductViewModel>("Products2")
In 9.5 like this: @Model.Item.GetValue<Dynamicweb.Ecommerce.ProductCatalog.ProductViewModel>("Products2")

BR Nicolai

Ivan Marijanović

Posted on 18/09/2018 07:44:08

Thanks for reference.

When I try that I cannot access individual products because I get error saying there is no GetEnumerator available. Shouldn't this contain the list of products that was referenced in item.

I am going with this:

var products = Model.Item.GetValue<Dynamicweb.Ecommerce.Frontend.ProductViewModel>("Products2");

foreach(var product in products)
{

}

Ivan

Morten Bengtson

Posted on 18/09/2018 12:47:35

This post has been marked as an answer

The value of a "Product" item field is a collection of products (IList<ProductViewModel>).

You can get the value like this...

var products = Model.Item.GetValue<IList<Dynamicweb.Ecommerce.Frontend.ProductViewModel>>("Products");

Or like this...

var products = Model.Item.GetValue("Products") as IList<Dynamicweb.Ecommerce.Frontend.ProductViewModel>;

Here is a more complete example:

<h2>Products</h2>
@{
	var products = Model.Item.GetValue("Products") as IList<Dynamicweb.Ecommerce.Frontend.ProductViewModel>;
	if (products.Any())
	{
		<ul>
			@foreach (var product in products)
			{
				<li>@product.Name (@product.Number)</li>
			}
		</ul>
	}
}

Best regards,
Morten

Votes for this answer: 1

Ivan Marijanović

Posted on 18/09/2018 18:04:05

Thank you for your response.

I still cannot get what I want since I get this error when I try to use product.ShortDescription:

Line 193: 'Dynamicweb.Ecommerce.Frontend.ProductViewModel' does not contain a definition for 'ShortDescription' and no extension method 'ShortDescription' accepting a first argument of type 'Dynamicweb.Ecommerce.Frontend.ProductViewModel' could be found (are you missing a using directive or an assembly reference?)

When I look at documentation (https://doc.dynamicweb.com/api/html/cebf3de7-0a41-d50e-b4c7-04c78b73f8d6.htm ) this field is defined in ProductViewModel.

Also if I select groups instead of products which view could I use to get access to Group Name, Description, Link and Image like when using Item Publisher app.

Ivan

Ivan Marijanović

Posted on 21/12/2018 15:10:59

Hi Morten

any follow up on this. It seems I can access only Name, and id number but cannot create link to this product page!

Ivan

Nicolai Pedersen

Posted on 02/01/2019 09:40:21

Hi Ivan

You might have an earlier version of Dynamicweb that does not have all the properties. So maybe you need to update?

BR Nicolai

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