change min_length in form __init__?
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galgal
Jan 11, 2012, 6:15:47 AM1/11/12
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Is there any way, to change the field's min_length argument inside form constructor? That doesn't work:
def __init__(self, *args, **kwargs):
super(CreateTeamForm, self).__init__(*args, **kwargs)
self.fields['primary_color'].min_length = 4
Wen 温业逵Yekui
Jan 13, 2012, 1:02:13 AM1/13/12
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why you use the "*" in your function argument?
2012/1/11 galgal <weglare...@gmail.com>
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bruno desthuilliers
Jan 13, 2012, 5:41:44 AM1/13/12
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On Jan 13, 7:02 am, Wen 温业逵Yekui <wenye...@yuejia.net> wrote:
> why you use the "*" in your function argument?
>
Because it's the sensible thing to do here - cf
> why you use the "*" in your function argument?
>
http://docs.python.org/release/2.6.7/tutorial/controlflow.html#more-on-defining-functions
bruno desthuilliers
Jan 13, 2012, 5:47:28 AM1/13/12
to Django users
On Jan 11, 12:15 pm, galgal <weglarek.rob...@gmail.com> wrote:
> Is there any way, to change the field's *min_length* argument inside form
JustWork AFAICT. What is the result ? ("doesn't work" is not really
descriptive...)
> Is there any way, to change the field's *min_length* argument inside form
> constructor? That doesn't work:
>
> def __init__(self, *args, **kwargs):
> super(CreateTeamForm, self).__init__(*args, **kwargs)
> self.fields['primary_color'].min_length = 4
Assuming primary_color is a CharField, this should theoretically
>
> def __init__(self, *args, **kwargs):
> super(CreateTeamForm, self).__init__(*args, **kwargs)
> self.fields['primary_color'].min_length = 4
JustWork AFAICT. What is the result ? ("doesn't work" is not really
descriptive...)
Alasdair Nicol
Jan 13, 2012, 5:59:28 AM1/13/12
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Hi Bruno,
I answered this question on Stack Overflow earlier this week [1].
When a field with min_length is initialised, a MinLengthValidator is added to the its validators. So if you set the min_length attribute after calling parent classes __init__ method, it is 'too late' for it to have any effect.
The solution is to change the field's validators in the __init__ method instead,
Cheers,
Alasdair
[1]: http://stackoverflow.com/questions/8818261/django-change-min-length-in-form-init/
I answered this question on Stack Overflow earlier this week [1].
When a field with min_length is initialised, a MinLengthValidator is added to the its validators. So if you set the min_length attribute after calling parent classes __init__ method, it is 'too late' for it to have any effect.
The solution is to change the field's validators in the __init__ method instead,
Cheers,
Alasdair
[1]: http://stackoverflow.com/questions/8818261/django-change-min-length-in-form-init/
-- Alasdair Nicol Developer, MEMSET mail: alas...@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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