Thanks, Larry for replying. I want to say I am new in Django and I 
don't know how to use in class-based view, Can you help me to 
integrate with CBV?

On Tuesday, September 18, 2018 at 5:57:28 PM UTC+5:30, [email protected] 
wrote:
>
> On Tue, Sep 18, 2018 at 8:13 AM, Django Lover <[email protected] 
> <javascript:>> wrote: 
> > How i can update model when Key exist else create a new one?? 
> > 
> > 
> > My code is- 
> > 
> > **Form.py** 
> > 
> > class UserSettingForm(forms.ModelForm): 
> >      class Meta: 
> >            model = StUserSetting 
> >            fields = ( 'default_language', 'prim_currency', 
> 'number_format', 
> > 'decimal_format', 
> >             'date_format', 'time_format', 'currency_format', 
> > 'currency_position', 'financial_year_start', 
> >              'week_start', 'estimate_default_tab', 
> 'invoice_default_tab',) 
> > 
> > **View.py** 
> > 
> > 
> > class CreateUpadateUserSetting(LoginRequiredMixin, FormView): 
> >      template_name = 'settings/user_settings.html' 
> >      form_class = UserSettingForm 
> >      success_url = '/user/setting/preference/' 
>
>
> https://docs.djangoproject.com/en/2.1/ref/models/querysets/#update-or-create 
>

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