On May 25, 1:27 pm, Simon Davies <simon...@gmail.com> wrote:
> I have a choices field called status in my model form which can be set
> to a number of values, however the options available will be based on
> its current state something like this, so it needs to refer to itself:
>
> class ContractForm(ModelForm):
>
> def getStatusChoices()
> if status == 'r':
> return (('C', 'Confirmed'), ('N', 'Cancelled))
> elif status == 'C':
> return (('M', 'Completed'), ('P', 'Paid'))
> ....
>
> status = fields.ChoiceField(choices=getStatusChoices())
>
> I read in another thread that you can do this by accessing and setting
> the self.fields['status'] which contains the status state of the
> current object and is created by the meta form class. How do I access
> self in the model function. If i pass it in as a parameter to the
> method as shown below what should the function call look like in the
> status field, i.e. how do I refer to the current object to be passed.
>
> def getStatusChoices(self):
> if not self.key:
> self.fields['STATUS'] = (('R', 'Requested'),
> ('C', 'Confirmed'))
> elif self.fields['STATUS'] == 'R':
> self.fields['STATUS'] = (('N', 'Cancelled'),
> ('C', 'Confirmed'))
> return self
>
> Thanks
>
> Simon
Hi,
it might help if you post a bit more from your form definition, but
I'll try to answer. Take the following example:
class MyForm(forms.Form):
status_choices = forms.ChoiceField(choices=(('0', 'False'),))
def __init__(self, *args, **kwargs):
super(MyForm, self).__init__(*args, **kwargs)
if kwargs.has_key('initial') and kwargs['initial'].has_key
('status'):
self.fields['status_choices'].choices = getStatusChoices(kwargs
['initial']['status']
that is you would like to set the available choices for the
status_choices field. You do this in the form's __init__ method. First
you initialise the form as usual (see the super line), then you adjust
the choices value of the status_choices field. Clearly, in my setting
the getStatusChoices function should return a valid choices tuple.
have a nice day
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