Question

Previously I had a separate Time Field and a Date Field in my Model, which I am now trying to join into one DateTime field, due timezone issues.

class Conversation(models.Model):
    conversation_datetime = models.DateTimeField()    

In my form I created two new fields one for time and another for date in order to extract the datetime in each accordingly.

class CallsForm(ModelForm):       
    conversation_date = forms.DateField(localize=True, widget=forms.DateInput())
    conversation_time = forms.TimeField(localize=True, widget=forms.TimeInput())

    def __init__(self, *args, **kwargs):
        super(CallsForm, self).__init__(*args, **kwargs)
        self.fields['conversation_date'] = self.instance.conversation_datetime.date()
        self.fields['conversation_time'] = self.instance.conversation_datetime.time()

In my view I simply pass in the instance:

call = Conversation(conversation_datetime = datetime.datetime.utcnow().replace(tzinfo=utc))
form = CallsForm(instance=call)    

However in my template the fields don’t get rendered. If I comment out the two rows in __init__, it gets perfectly rendered. What is wrong here?

   # self.fields['conversation_date'] = self.instance.conversation_datetime.date()
   # self.fields['conversation_time'] = self.instance.conversation_datetime.time()

Answer 1

You override your form fields. Probably you want to set initial value:

self.fields['conversation_date'].initial = self.instance.conversation_datetime.date()
self.fields['conversation_time'].initial = self.instance.conversation_datetime.time()