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  • Ian Smedley 97 posts 192 karma points
    Jun 06, 2013 @ 11:20
    Ian Smedley
    1

    BUG: NullException using TypedCrops with DAMP.PropertyEditorValueConverter.Model

    Hello,

    I've just had 'one of those' bugs which took a seemingly long time to track down exactly what was causing it - but now it's all clear - so I thought I'd post up the details so that a fix could maybe be added to the source.

    If you have a media item - with the Image cropper - and you have, for instance two properties on this media item:

    • Image   - (File Upload)
    • Crop     - (Image Cropper)
    In Razor when you use the DAMP_Item model - and you try to access TypedCrops (TypedCrops.Count) for instance - you will get a null reference exception!
    I evenutally took a look at the source and found my property name of "crop" to be at fault - this line of code in TypedCrops will pickup the empty '<crop>' tag - which doesn't contain any attributes - and so the unhandled exception occurs:
    _typedCrops.Add(item.Attributes["name"].Value.ToLower(), item.Attributes["url"].Value);
    My solution was to change the Umbraco property name to something other than crop - in essence it's a reserved word -  a better solution would be handle gracefuly the occurance of <crop> tags which don't contain actual crop attributes..
    Here's a snippet of the original xml that caused the troubles:
      <image>/media/3084/img_8149.jpg</image>
  <crop>
    <crops date="2013-06-06T09:24:21">
      <crop name="Big" x="103" y="0" x2="4273" y2="2848" url="/media/3084/img_8149_Big.jpg" />
      <crop name="Normal" x="3" y="349" x2="4273" y2="2202" url="/media/3084/img_8149_Normal.jpg" />
    </crops>
  </crop>
    Hope this helps someone out!
    Kind Regards,
    Ian

     

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  • Jeroen Breuer 4909 posts 12266 karma points MVP 5x admin c-trib
    Jun 18, 2013 @ 12:12
    Jeroen Breuer
    0

    I'll see if I can fix this for the next version. For now just don't name the ImageCropper on your Media Type 'crop'.

    Jeroen

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