multinode tree picker ienumerable ipublishedcontent returning null - Using Umbraco And Getting Started

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Sam 79 posts 426 karma points

Jul 02, 2021 @ 15:48
0

multinode tree picker - iEnumerable IpublishedContent returning null

Using Umbraco And Getting Started

Umbraco 8
Hello All,

I am having trouble with the Multimode Tree Picker. The value always returns null despite the value being defined in Backoffice.

Here is the code.
```
 @{var bannerLink = Model.Value<IEnumerable<IPublishedContent>>("linkToContent");}

            @if(bannerLink != null){
                foreach (var link in bannerLink){
                   <a href="@link.Url">Learn More</a>
                }
           }
```
My result is the link is not rendering because of the condition if bannerLink !=null. If I remove the condition I get an error.

it just seems like IEnumerableI PublishedContent is not returning any value.

Thanks in advance.
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Marc Goodson 2141 posts 14344 karma points MVP 8x c-trib

Jul 03, 2021 @ 15:31
0
Hi Sam

A couple of things to check.,,

Where is the LinkToContent property defined?

is it on a page? eg does your homepage doctype have a LinkToContent property of Multi Node Tree Picker type?

or

do you have a NestedContent property, that allows for multiple Banners, and on each Banner there is a LinkToContent property?

I ask only as it's really common to use model.Value within a foreach loop, accidentally referring to the page model, rather than the model being looped, eg banner.Value<IEnumerable<IPublishedContent>>("linkToContent")

Sure you've checked the alias of the property is linkToContent it is case sensitive, been caught out by LinkToContent or linktoContent in this kind of frustrating scenario!

Should the underlying property editor for linkToContent be a MultiUrlPicker?

in which case:
```
@{var bannerLink = Model.Value<IEnumerable<Link>>("linkToContent");}
```
would be the way...

also if you have multiple things picked here - won't the code result in multiple links called 'learn more' (but that's a future thing... getting it to work is first priority!)

regards

Marc
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Sam 79 posts 426 karma points

Jul 12, 2021 @ 11:05
0
Hi Marc,

Sorry for the late response... I took a Vacation.
- The linkToContent property is part of the home page node, and is not within a foreach loop where the var might be item
- I have checked the case and spelling of the property a few hundred times.
- I can try to change the property editor to use multi URL picker, but I am having this issue with another property that does need more than just the link to content.
- I have limited the Property to allow the customer to pick a maximum of 1 value to keep the user from selecting multiple.
Something else to note... when I just place the property in the template as if it were a standard text field, I get the following value.

Umbraco.Web.PublishedModels.AboutPageWithHighlights

SO I see that there is some sort of value stored. and it is listing the document type at the end of it. As soon as I plug it in to the condition and the -Ienumerable-IPublishedContent-- it acts like there is no value.

Thanks for the help.
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Marc Goodson 2141 posts 14344 karma points MVP 8x c-trib

Jul 12, 2021 @ 20:37
100
Hi Sam

hope you had a good holiday

quick thought, if you've restricted the picker to 1 item is it just an IPublishedContent item?

eg
```
 @{var bannerLink = Model.Value<IPublishedContent>("linkToContent");}
```
regards

Marc
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Sam 79 posts 426 karma points

Jul 13, 2021 @ 11:45
0
Thanks Marc. That did the trick, and it seems so obvious thinking about it. Here is what I ended up with.
```
@{var bannerLink = Model.Value<IPublishedContent>("linkToContent");}

            @if(bannerLink != null){

                   <a href="@bannerLink.Url">Learn More</a>

           }
```
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Marc Goodson 2141 posts 14344 karma points MVP 8x c-trib

Jul 13, 2021 @ 13:16

0

Looks good, sorry I didn't think it first!

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multinode tree picker - iEnumerable IpublishedContent returning null