For my django app I want to enable the user to select whether a post is public or private.

This is my best attempt so far:

views.py

def home(request):
    recipes = models.Recipe.objects.filter(recipe_private, recipes)
    context = {
        'recipes': recipes
    }
    def recipe_private():
        for recipe in recipes:
            if recipe(is_private=True) and recipe.author == self.request.user:
                True
            else:
                False
    return render(request, "recipes/home.html", context)

And here is my models.py:

class Recipe(models.Model):
    title = models.CharField(max_length=100)
    description = models.TextField()
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    serving = models.PositiveIntegerField(default=1)
    temperature = models.PositiveIntegerField(default=1)
    prep_time = models.PositiveIntegerField(default=1)
    cook_time = models.PositiveIntegerField(default=1)
    ##tags = models.ManyToManyField('Tag')
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    id = models.CharField(max_length=100, default=uuid.uuid4, unique=True, primary_key=True, editable=False)
    is_private = models.BooleanField(default=True)

    def get_absolute_url(self):
        return reverse('recipes-detail', kwargs={"pk": self.pk})

    def __str__(self):
        return str(self.title)

The logic works in my head but not in practice, how would I improve this? I want it so only the author can see their own private posts, anyone who isnt the author shouldnt be able to see a post marked as private.