Hi,
Any idea if newforms simplifies this?
Regards,
Andres
On 9/29/06, DavidA <[EMAIL PROTECTED]> wrote:
> I also ran into this problem so I did it that hard way: I created a
> custom model DateField and a custom form DateField. (I call them
> RelaxedModelDateField and RelaxedFormDateField meaning they are relaxed
> about what format you put the date in). Every time I look at this code
> I think "this is way too complicated to simply allow different date
> formats on input/output" which is probably one of the reasons the
> forms/manipulators/validators are all getting revisited right now.
>
> To use this, just use RelaxedModelDateField in place of
> models.DateField in your model. This works in the admin.
>
> class RelaxedModelDateField(models.DateField):
> """A DateField that supports various date formats
> rather than just yyyy-mm-dd. The following formats
> are allowed:
> m/-d/-yyyy 6-23-2006
> m/-d/-yy 6/23/06
> m/-d 6/23
> yyyy-mm-dd 2006-6-23
> yyyymmdd 20060623
>
> In the UI, the date will be displayed as mm/dd/yyyy"""
> def __init__(self, verbose_name=None, name=None,
> auto_now=False, auto_now_add=False, **kwargs):
> models.DateField.__init__(self, verbose_name, name,
> auto_now, auto_now_add, **kwargs)
>
> def get_internal_type(self):
> return "DateField"
>
> def to_python(self, value):
> if isinstance(value, datetime.datetime):
> return value.date()
> if isinstance(value, datetime.date):
> return value
> try:
> return toDateRelaxed(value)
> except ValueError:
> raise validators.ValidationError, gettext('Enter a valid
> date.')
>
> def get_manipulator_field_objs(self):
> return [RelaxedFormDateField]
>
> def flatten_data(self, follow, obj = None):
> val = self._get_val_from_obj(obj)
> return {self.attname:
> (val is not None and val.strftime("%m/%d/%Y") or '')}
>
> class RelaxedFormDateField(forms.DateField):
> """A version of forms.DateField that automatically
> supports various formats of dates."""
> def __init__(self, field_name, is_required=False,
> validator_list=None):
> forms.DateField.__init__(self, field_name, is_required,
> validator_list)
>
> def isValidDate(self, field_data, all_data):
> try:
> toDateRelaxed(field_data)
> except ValueError:
> raise validators.CriticalValidationError, 'Enter a valid
> date.'
>
> def html2python(data):
> "Converts the field into a datetime.date object"
> try:
> return toDateRelaxed(data)
> except ValueError:
> return None
> html2python = staticmethod(html2python)
>
>
> And here is the routine that actually does the "relaxed" parsing:
>
> # handle many formats:
> # m/-d/-yyyy 6-23-2006
> # m/-d/-yy 6/23/06
> # m/-d 6/23
> # yyyy-mm-dd 2006-6-23
> # yyyymmdd 20060623
> def toDateRelaxed(s):
> exps = (r'^(?P<m>\d{1,2})[/-](?P<d>\d{1,2})[/-](?P<y>\d{4})$',
> r'^(?P<m>\d{1,2})[/-](?P<d>\d{1,2})[/-](?P<y>\d{2})$',
> r'^(?P<m>\d{1,2})[/-](?P<d>\d{1,2})$',
> r'^(?P<y>\d{4})-(?P<m>\d{1,2})-(?P<d>\d{1,2})$',
> r'^(?P<y>\d{4})(?P<m>\d{2})(?P<d>\d{2})$')
> for exp in exps:
> m = re.match(exp, s)
> if m:
> mm = int(m.group('m'))
> dd = int(m.group('d'))
> try:
> yy = int(m.group('y'))
> if yy < 100:
> yy += 2000
> except IndexError:
> yy = datetime.date.today().year
> return datetime.date(yy, mm, dd)
> raise ValueError, s
>
> Hope this helps...
> -Dave
>
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