> I'm working on an app for planning balanced daily diets. And I'm > having trouble figuring out how to set up my models. I have: > > Ingredient(models.Model): > ingredient_name = CharField(max_length=50) > unit = CharField(max_length=15) > calories = DecimalField(max_digits=6, decimal_places=2) > > Recipe(models.Model): > recipe_name = CharField(max_length=50) > ingredients = ManyToMany(Ingredient) > amount = DecimalField(max_digits=6, decimal_places=2) > > An ingredient can be in many recipes and a recipe has many > ingredients. The thing is, in a Recipe I want to have an arbitrary > number of ingredients, and I need for each ingredient to be associated > with an amount. I could use multiple ForeignKey fields from in Recipe > to Ingredient, and multiple amount fields in Recipe, but that seems > klunky. Is there a "right" way to do this?
You can use the "through" attribute on your M2M definition. See: http://docs.djangoproject.com/en/dev//topics/db/models/#extra-fields-on-many-to-many-relationships That will allow you to add fields like amount to each M2M relation. -RD --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
