Foreign key django - Database Relationships - sql

Question

I have a model for the Product Perfume, the product have different volume and prices.
I need to render the volume and price for each but i get "'function' object has no attribute 'prices'"
Any ideas? iam grateful for any suggestions
View:
from django.shortcuts import render
from django.views.generic import View, TemplateView
from products.models import Perfume, Pricing
def getIndex(request):
perfumes = Perfume.objects.all
thePrice= perfumes.prices.all()
return render(request, 'index.html', {'perfumes': perfumes, 'thePrice':thePrice})
Model
from django.conf import settings
from django.db import models
from django.utils import timezone
class Perfume(models.Model):
genderChoice = (
('unisex','unisex'), ('male', 'male'), ('female', 'female'))
name = models.CharField(max_length=50, default='')
brand = models.CharField(max_length=40, default='')
gender = models.CharField(max_length=7, choices=genderChoice, default='unisex')
description = models.TextField()
image = models.ImageField(upload_to='images/product_image')
created = models.DateField()
author =models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
active = models.BooleanField(default=False)
show_for_consumer = models.BooleanField(default=False)
def __str__(self):
return self.name
class Pricing(models.Model):
product =models.ForeignKey(Perfume, on_delete=models.CASCADE,related_name='prices')
price= models.DecimalField(max_digits=10, decimal_places=2)
volume= models.DecimalField(max_digits=10, decimal_places=2)
def __str__(self):
return 'Perfume {} - Price{} - Volume {}'.format(self.product.name,self.price, self.volume)

Answer 1

First, you need to correct the missing () in getting the perfumes queryset
perfumes = Perfume.objects.all()
This thePrice = perfumes.prices.all() is incorrect. You have to do this for every perfume, not for a queryset of perfumes.
Since Perfume and Pricing have a one-to-many relationship, you can directly access the prices from every perfume instance. This way you only need to pass the perfumes queryset
def getIndex(request):
perfumes = Perfume.objects.all()
return render(request, 'index.html', {'perfumes': perfumes})
Finally, in your template, you can call the prices like this
{% for product in perfumes %}
...
{% for p in product.prices.all %}
<option>{{p.volume}}ml - {{p.price}}$ </option>
...
{% endfor %}
{% endfor %}