the application is in an unstable state and should be restarted - Using Umbraco and getting started

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Sebastian Dammark 583 posts 1407 karma points

Feb 07, 2021 @ 22:24

The application is in an unstable state and should be restarted.

I'm trying to implement the Block List on a website but I get this error:

Cannot bind source type Umbraco.Web.PublishedModels.Frontpage to model type Umbraco.Web.PublishedModels.BlockImageGrid. Both view and content models are PureLive, with same version. The application is in an unstable state and should be restarted.

My template looks like this:

@inherits Umbraco.Web.Mvc.UmbracoViewPage<ContentModels.Frontpage>
@using ContentModels = Umbraco.Web.PublishedModels;
@using Umbraco.Core.Models.Blocks;
@{
    Layout = "Master.cshtml";
}
<body>
    @Html.Partial("HFK/navigation")
    <div class="content-wrapper">
        @{
            var blocks = Model.ContentElements;
            foreach (var block in blocks)
            {
                var content = block.Content;
                @Html.Partial("BlockList/Components/" + content.ContentType.Alias)
            }
        }
    </div>
</body>

And my partial looks like this:

@inherits Umbraco.Web.Mvc.UmbracoViewPage<ContentModels.BlockImageGrid>
@using ContentModels = Umbraco.Web.PublishedModels;

@{
    var images = Model.Images;
}

What the heck am I doing wrong ?

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Dave Woestenborghs 3504 posts 12135 karma points MVP 9x admin c-trib

Feb 08, 2021 @ 18:46
1
Hi Sebastian,

I think the error message is confusing and hides the actual issue.

In your partial view you need to do this :
```
 var images = Model.Content.Images;
```
This because a block list item can have 2 doctypes associated. A content and a settings one.

See https://our.umbraco.com/Documentation/Getting-Started/Backoffice/Property-Editors/Built-in-Property-Editors/Block-List-Editor/#1-default-rendering

Dave
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Sebastian Dammark 583 posts 1407 karma points

Feb 09, 2021 @ 18:06
100
Hi Dave

Yeah, that looks like it could lead to trouble :)

But I did find another solution. A good friend of mine pointed me in the direction of casting to the BlockImageGrid model, like this
```
@inherits UmbracoViewPage<BlockListItem>
@using Umbraco.Core.Models.Blocks
@using Umbraco.Web.Models

@{
    BlockImageGrid content = (BlockImageGrid)Model.Content;
    var images = content.Value<IEnumerable<IPublishedContent>>("images");
}
```
This solved my problems. But thanks for the input
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