IMHO you copy/pasted one time too much.

when you feel there's a bug, start with a smaller example and reiterate...

the links argument accepts 

"""
 a list of dict(header='name',body=lambda row: A(...))
""" 

Your code holds a couple of parenthesis more than needed, so the argument 
to the lambda is not a single element but a tuple

i.e. instead of doing 
dict(header='name',body=lambda row: A(...))
you're doing
dict(header='name',body=lambda row: *(*A(...)*)*)
notice the *()* parenthesis

That's why link['body'](record)[0] resolves the bug in your code.


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