1 from django import forms

     2 

     3 from offline.event.models import Event

     4 

     5 class EventCreateForm(forms.ModelForm):

     6 

     7     class Meta:

     8         model = Event

     9         fields = ['title', 'start_date', 'stop_date']

    10 

    11     def clean_start_date(self):

    12         return self.cleaned_data['start_date']

    13 

    14     def clean_stop_date(self):

    15 

    16         stop_date = self.cleaned_data['stop_date']

    17         start_date = self.clean_start_date()

    18 

    19         if start_date > stop_date:

    20             raise forms.ValidationError("Event cannot stop before it starts")

    21 

    22         return self.cleaned_data['stop_date']