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Django admin form dynamically changes fields based on checkbox

I am implementing a calendar in Django and want to expand my functionality and add support for recurring events. My problem is that I would like to have a BooleanField that toggles between one-time / multi-day events and repeating events. Thus, the field will be marked as something like: Is this a recurring event? and if the user checks the checkbox, he changes the start and end fields to display another field.

Here is a short version of my model.py

class Event(models.Model):

    title = models.CharField(max_length=40)

    description = models.TextField(blank=True)

    is_recurring = models.BooleanField(blank=True, default=False, verbose_name='Event is recurring?')

    start = models.DateTimeField()

    end = models.DateTimeField()    

    def __str__(self):
        return self.title

And if the user checks the is_recurring field, then dynamically delete these 2 fields and change the form. Here is my admin.py:

class EventAdmin(admin.ModelAdmin):
    form = EventForm
    fieldsets = [
        (None,  {'fields': [
                                'title',
                                'description'
                            ]
                }
        ),
        (None,  {'fields':  [
                                'is_recurring',
                                'start',
                                'end',
                            ]
                }
        ),
    ]   # END fieldset

    def get_fieldsets(self, *args, **kwargs):
        return(
                (None, {
                        'fields' : ('my_extra_field',),
                    }),
            )

admin.site.register(Event , EventAdmin)

and here are my forms.py

class EventForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(EventForm, self).__init__(*args, **kwargs)
        self.fields['my_extra_field'] = forms.CharField()

    class Meta:
        model = Event

So, here I tried to add my_extra_fieldto the form to try, but I keep getting

(my_extra_field), . // EventAdmin.

. , , fieldsets, , , , , , , fieldsets.

, , , ? , 2 ?

+4
1

, :

class EventForm(forms.ModelForm):
    my_extra_field = forms.CharField()   

    class Meta:
        model = Event
        exclude = tuple()  # Required in recent Django versions.
                           # Be careful not to include fields by accident.

, , save() , ModelForm , .

class EventForm(forms.ModelForm):
    my_extra_field = forms.CharField()

    def save(self, *args, **kwargs):
        if self.cleaned_data['is_recurring']:
            # do something with your extra fields,
            # remove values from other fields, etc.
        super(EventForm, self).save(*args, **kwargs)

, Javascript.

+3

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