block list loop gives unhandled error

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Martin Rud 232 posts 902 karma points c-trib

Apr 13, 2022 @ 10:24

Using Umbraco And Getting Started

Umbraco 9

Hi forum,

When trying to loop a block list property I get this error (attached image shows more):

An unhandled exception occurred while processing the request.
ModelBindingException: Cannot bind source type Umbraco.Cms.Core.Models.Blocks.BlockListItem`2[[Umbraco.Cms.Web.Common.PublishedModels.SiteBlItem_TextImage, ModelsGeneratedAssembly, Version=0.0.0.2, Culture=neutral, PublicKeyToken=null],[Umbraco.Cms.Core.Models.PublishedContent.IPublishedElement, Umbraco.Core, Version=9.4.3.0, Culture=neutral, PublicKeyToken=null]] to model type Umbraco.Cms.Core.Models.PublishedContent.IPublishedContent.
Umbraco.Cms.Web.Common.ModelBinders.ContentModelBinder.ThrowModelBindingException(bool sourceContent, bool modelContent, Type sourceType, Type modelType)

This is my partial view code:

@inherits Umbraco.Cms.Web.Common.Views.UmbracoViewPage
@using Umbraco.Cms.Core.Models.Blocks;
@{
    var blocks = Model.Value<IEnumerable<BlockListItem>>("ribbons");
    foreach (var block in blocks)
    {
        var content = block.Content;

        <h2>@content.Value("headline")</h2>
        @await Html.PartialAsync("SiteBlocklist/" + content.ContentType.Alias, block)
    }
}

The partials called above does reside in the correct folder (I believe):

enter image description here

Full error:

enter image description here

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Damian 61 posts 342 karma points

Apr 13, 2022 @ 19:40
100
Hi Martin, It's a bit difficult to get you an exact answer without seeing the view for SiteBlocklist/SiteBlItem_TextImage but on that view, i would expect to see something like the following:
```
@inherits Umbraco.Cms.Web.Common.Views.UmbracoViewPage<Umbraco.Cms.Core.Models.Blocks.BlockListItem>;
@{
    var block = (SiteBlItem_TextImage) Model.Content;
}
@*do stuff here*@
```
It seems that view is trying to bind to a different model altogether, say SiteBlItem_YouTubeVideo (for example) instead of SiteBlItem_TextImage

Hope this helps get on track. If not, please post that other view and we'll get it figured out.
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Martin Rud 232 posts 902 karma points c-trib

Apr 14, 2022 @ 09:42
0
Cool! And thanks! That was the solution. :)

In the view for SiteBlocklist/SiteBlItem_TextImage I now have:
```
@inherits Umbraco.Cms.Web.Common.Views.UmbracoViewPage<Umbraco.Cms.Core.Models.Blocks.BlockListItem>;
@{
    var content = Model.Content;
}
<p>@content.Value("headline")</p>
```
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