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Python

Posted by Andrew Voitsekhovskyy
Andrew Voitsekhovskyy
3,523 Points

Django models !!! Many foreignKeys

Hi everybody, i made two models, "Salad" and "Ingredients"....also i want to add ingredientslist parameter that contains different ingredients from "Ingredients" model depending on Salad like a list of ForeignKeys .... and i don't know what to write after ingredientlist = models.

models.py

from django.db import models

class Salad(models,Model):
    name = models.CharField(max_length = 255)
    ingredientlists = models.

class Ingredients(models):
    name = models.Charfield(max_length = 255)

    def __str__(self):
        return self.name

salad.html

{% block content %}
{{salad.name}}
{% for ingredient in ingredientslist %}
{{ingredient}}
{% endfor %}
{% endblock %}

1 Answer

James J. McCombie
.a{fill-rule:evenodd;}techdegree seal-36
James J. McCombie
Python Web Development Techdegree Graduate 21,199 Points

Hello,

you need a ManyToManyField.

James J. McCombie
.a{fill-rule:evenodd;}techdegree seal-36
James J. McCombie
Python Web Development Techdegree Graduate 21,199 Points 
ingredients = models.ManyToManyField(Ingredient)

if salad is a Salad object, you can get to its ingredients with

salad.ingredients.all()

also if ingredient is an Ingredient object you can get to all the salads it is used in with

ingredient.salad_set.all()

Here is a link to the relevant page in the documentation

https://docs.djangoproject.com/en/1.10/topics/db/examples/many_to_many/

Andrew Voitsekhovskyy
Andrew Voitsekhovskyy
3,523 Points

it works, thanks