[web2py] problem when upgrade to 1.99.4

[Pepe Araya]

Hi,

I have this ticket when upgrade to 1.99.4:

<type 'exceptions.AttributeError'> 'NoneType' object has no attribute 
'strftime'VERSIONweb2py™(1, 99, 4, datetime.datetime(2011, 12, 14, 14, 46, 
14), 'stable')PythonPython 2.7.1: /usr/local/bin/pythonTRACEBACK

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Traceback (most recent call last):
  File "/home/doctoradoarq/webapps/web2py_docv3/web2py/gluon/restricted.py", 
line 204, in restricted
    exec ccode in environment
  File 
"/home/doctoradoarq/webapps/web2py_docv3/web2py/applications/doctoradofadeu/controllers/administrar.py"
 
<https://v3.doctoradofadeu.cl/admin/edit/doctoradofadeu/controllers/administrar.py>,
 line 244, in <module>
  File "/home/doctoradoarq/webapps/web2py_docv3/web2py/gluon/globals.py", line 
172, in <lambda>
    self._caller = lambda f: f()
  File 
"/home/doctoradoarq/webapps/web2py_docv3/web2py/applications/doctoradofadeu/controllers/administrar.py"
 
<https://v3.doctoradofadeu.cl/admin/edit/doctoradofadeu/controllers/administrar.py>,
 line 92, in agenda
    return index()
  File 
"/home/doctoradoarq/webapps/web2py_docv3/web2py/applications/doctoradofadeu/controllers/administrar.py"
 
<https://v3.doctoradofadeu.cl/admin/edit/doctoradofadeu/controllers/administrar.py>,
 line 88, in index
    grid = SQLFORM.smartgrid(db.actividades)
  File "/home/doctoradoarq/webapps/web2py_docv3/web2py/gluon/sqlhtml.py", line 
1962, in smartgrid
    user_signature=user_signature,**kwargs)
  File "/home/doctoradoarq/webapps/web2py_docv3/web2py/gluon/sqlhtml.py", line 
1781, in grid
    value=field.represent(value,row)
  File 
"/home/doctoradoarq/webapps/web2py_docv3/web2py/applications/doctoradofadeu/models/ac_a_actividades.py"
 
<https://v3.doctoradofadeu.cl/admin/edit/doctoradofadeu/models/ac_a_actividades.py>,
 line 33, in <lambda>
    db.actividades.fecha.represent = lambda v, r: v.strftime('%d-%m-%Y')
AttributeError: 'NoneType' object has no attribute 'strftime'


related to:
db.actividades.fecha.represent = lambda v, r: r.strftime('%d-%m-%Y')

what is a 'date' field

in version 1.99.2 it works ok, and reformat the date.

Thanks!!