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I'm currently been using the angular-tree-ui component, which is a nice little component that allows nesting of hierarchical data with drag and drop support.

All has been going well until I started to pull the data from Asp.Net Web Api.

Originally the data is set as in angularjs:

var results = [{"id":1,"productName":"Test","nodes":[]}];

Which works fine.

But as soon as I use $http to connect to the Asp.Net Web Api which returns:

{"id":1,"productName":"Test","nodes":[]}

... the angular-tree-ui component complains with multiple errors.

"Cannot read property '$$hashKey' of undefined"

Why does it work with the manual creation of JSON but not with the JSON returned from the Asp.Net Web API?

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  • You realize the first result set is an array and the second is an object?
    – Malk
    Commented Sep 3, 2014 at 17:50
  • The JSON that was been returned from the Asp.Net Web Api wasn't just {"id":1,"productName":"Test","nodes":[]} but it was also returning the headers in the JSON aswell. I only noticed after using {{data|json}}
    – Steve Dickinson
    Commented Sep 3, 2014 at 18:55
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