The brackets are there because it's a list of roots in your tree, if you
know for sure that you will have always one and only one root, you can do:
{{response.write(json(your_tree[0]), escape=False)}}
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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