On 16/11/11 14:32, Jaroslav Dobrek wrote:
Hello,
I have got a class Person:
class Person(models.Model):
given_names = models.CharField(max_length=200)
family_names = models.CharField(max_length=200)
date_of_birth = models.DateField(blank=True)
and a class PersonForm:
class PersonForm(forms.ModelForm):
def clean_date_of_birth(self):
try:
date_of_birth = self.cleaned_data['date_of_birth']
if date_of_birth.year< 1890:
raise forms.ValidationError(u"It is very improbable
for a person to be this old.")
return date_of_birth
except KeyError:
pass
The code works as expected if I leave out "blank=True" in the field
date_of_birth of the class Person. But it doesn't work with
blank=True.
How does clean_date_of_birth have to look like, if date_of_birth is
optional?
Jaroslav
Hi Jaroslav,
When blank=True, you need to check that the user has entered a
date_of_birth before you try to access its year.
def clean_date_of_birth(self):
date_of_birth = self.cleaned_data.get('date_of_birth')
if date_of_birth:
if date_of_birth.year < 1890:
raise forms.ValidationError(u"It is very improbable...")
return date_of_birth
Regards,
Alasdair
--
Alasdair Nicol
Developer, MEMSET
mail: alasd...@memset.com
web: http://www.memset.com/
Memset Ltd., registration number 4504980. 25 Frederick Sanger Road, Guildford,
Surrey, GU2 7YD, UK.
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