issue with dittomultiplemediapickerconverter returning null

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suzyb 474 posts 932 karma points

Jul 15, 2015 @ 13:46
0

Issue with DittoMultipleMediaPickerConverter returning null
I'm trying to get a list of images from a multi media picker using the DittoMultipleMediaPickerConverter but it seems to be returning null.

This is my code
```
[TypeConverter(typeof(DittoMultipleMediaPickerConverter))]
[UmbracoProperty("solutionsNavigationImages", "solutionsNavigationImages", false, null)]
 public List<string> SolutionsNavigationImages { get; set; }
```
The property solutionsNavigationImages has images selected yet the property is null when I try to access it in my view. As I understand it the above is correct so what else could be causing the property to be null.
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Lee Kelleher 4026 posts 15836 karma points MVP 13x admin c-trib

Jul 15, 2015 @ 14:40

0

Hi Suzy,

What values are you expecting back for the property?

The property-type is List<string>, what string values are you expecting to be in the list?

Thanks,
- Lee

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suzyb 474 posts 932 karma points

Jul 15, 2015 @ 14:45

0

Given the other mentions on the forum of the MultipleMediaPickerConverter I assumed it would give a list of the image URLs.

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Lee Kelleher 4026 posts 15836 karma points MVP 13x admin c-trib

Jul 15, 2015 @ 14:54
100
The issue here is that the DittoMultipleMediaPickerConverter will return a bunch of IPublishedContent (media) objects... but trying to convert that to a string will return null.

The solution for this is to have a class/model that can represent the media item. See James South's reply on another post:

https://our.umbraco.org/projects/developer-tools/ditto/ditto-feedback/65149-TypeConverter-not-being-fired#comment-220766
```
public class YourModel
{
    /* ... other properties ... */

    [TypeConverter(typeof(DittoMultipleMediaPickerConverter))]
    public List<Image> SolutionsNavigationImages { get; set; }
}

public Image
{
    /* ... add properties (if you want) ... */

    public string Url { get; set; }
}
```
Cheers,
- Lee
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suzyb 474 posts 932 karma points

Jul 15, 2015 @ 14:56

0

ah I see.

Thanks for the help Lee.

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