Question

I’m trying to create a recipe/ingredient model in Django

In my models.py I got

class Ingredient(models.Model):
    name = models.CharField(max_length=20)

class Recipe(models.Model):
    name = models.CharField(max_length=50)
    ingredients = models.ManyToManyField(Ingredient, blank=True)

But when I create a Recipe or Ingredient in my admin, I get :

IntegrityError at /admin/menuview/ingredient/add/
menuview_ingredient.recipe_id may not be NULL

What am I doing wrong here?

Answer 1

I think you have to give relationship a null=True parameter too.

ingredients = models.ManyToManyField(Ingredients, blank=True, null=True,)