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Viewing changes to ivle/webapp/base/forms.py

  • Committer: Matt Giuca
  • Date: 2010-02-25 06:10:18 UTC
  • Revision ID: matt.giuca@gmail.com-20100225061018-18w07kvsh2bf6386
forms: Added DateTimeValidator, which validates datestamps in our preferred format.

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ivle/webapp/base/forms.py
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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import re
 
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import datetime
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import formencode
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import formencode.validators
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                'Must consist of a lowercase alphanumeric character followed '
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                'by any number of lowercase alphanumerics, ., +, - or _.',
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                value, state)
 
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class DateTimeValidator(formencode.validators.FancyValidator):
 
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    """Accepts a date/time in YYYY-MM-DD HH:MM:SS format. Converts to a
 
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    datetime.datetime object."""
 
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    def _to_python(self, value, state):
 
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        """Validate and convert."""
 
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        try:
 
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            return datetime.datetime.strptime(value, "%Y-%m-%d %H:%M:%S")
 
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        except ValueError, e:
 
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            raise formencode.Invalid(str(e) + " -> " + repr(value), value, state)
 
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            raise formencode.Invalid("Must be a timestamp in "
 
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                "YYYY-MM-DD HH:MM:SS format", value, state)
 
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    def _from_python(self, value, state):
 
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        try:
 
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            return value.strftime("%Y-%m-%d %H:%M:%S")
 
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        except AttributeError:
 
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            raise formencode.Invalid("Must be a datetime.datetime object")