Django checkbox field

Question

I am trying to add a checkbox that if ticked will make a attribute in my model false.

My model is:

 class Topic(models.Model):
        """A topic the user is learning about"""
        text = models.CharField(max_length=200)
        date_added = models.DateTimeField(auto_now_add=True)
        owner = models.ForeignKey(User)
        public = False

My forms.py (where the checkbox should go) is:

class TopicForm(forms.ModelForm):
    class Meta:
        model = Topic
        fields = ['text']
        labels = {'text': ''}

And my function:

def topics(request):
    """Show all topics."""
    topics = Topic.objects.filter(owner=request.user).order_by('date_added')
    context = {'topics': topics}
    return render(request, 'learning_logs/topics.html', context)

Could you please tell me what I need to change in order that when a checkbox in forms is checked, the public variable becomes True, and then the function Topics displays public topics as well as just the owners.

Thanks

Milo

Answer 1

The models.BooleanField renders itself as a checkbox. Is either True or False. So:

# models.py

class Topic(models.Model):
    # ...
    public = models.BooleanField(default=True)


# forms.py

class TopicForm(forms.ModelForm):
    class Meta:
        model = Topic
        fields = ["text", "public"]
        labels = {"text": "", "public": "label for public"}

If you want to also accept null values, then you should use models.NullBooleanField.