{{"""Usage:

  def controller():
      return {"": db().select(db.thing.ALL)}

And then visit that controller with a .csv extention name
"""
}}{{if len(response._vars)==1:}}{{
# Not yet find a Python 2/3 compatible StringIO pattern,
# we avoid this solution http://web2py.com/books/default/chapter/29/10/services#CSV
# Here we buffer the entire csv file instead (it is your controller's job to limit the volume anyway),
# based on: http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#CSV-one-Table-at-a-time-

content = response._vars[next(iter(response._vars))]
response.headers['Content-Type'] = 'application/vnd.ms-excel'
response.write(str(content), escape=False)
}}{{pass}}