Django - how to create proper categories and subcategories

Question

I am currently working on a store made in Django and I have a problem because I have a model for Category as well as Subcategory. The problem is that I don't really know what I did wrong, because in the html file I try to call both categories and subcategories, but in each category all subcategories are displayed, instead of belonging to a specific category. I would like to ask for your help, and check, if files below are correctly written. Thanks in advance

models.py

from django.db import models
from django.urls import reverse


# Class model for category
class Category(models.Model):
    name = models.CharField(max_length=200,
                            db_index=True)
    slug = models.SlugField(max_length=200,
                            db_index=True)

    class Meta:
        ordering = ('name',)
        verbose_name = 'category'
        verbose_name_plural = 'categories'

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse('selcorshop:product_list_by_category',
                       args=[self.slug])


# Class model for subcategory
class Subcategory(models.Model):
    category = models.ForeignKey(Category,
                                 related_name='category',
                                 on_delete=models.CASCADE)
    name = models.CharField(max_length=200,
                            db_index=True)
    slug = models.SlugField(max_length=200,
                            db_index=True)

    class Meta:
        ordering = ('name',)
        verbose_name = 'subcategory'
        verbose_name_plural = 'subcategories'

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse('selcorshop:product_list_by_subcategory',
                       args=[self.slug])


# Class model for product
class Product(models.Model):
    subcategory = models.ForeignKey(Subcategory,
                                 related_name='products',
                                 on_delete=models.CASCADE)
    name = models.CharField(max_length=200, db_index=True)
    slug = models.SlugField(max_length=200, db_index=True)
    image = models.ImageField(upload_to='products/%Y/%m/%d',
                              blank=True)
    description = models.TextField(blank=True)
    price = models.DecimalField(max_digits=10, decimal_places=2)
    available = models.BooleanField(default=True)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)

    class Meta:
        ordering = ('name',)
        index_together = (('id', 'slug'),)

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse('selcorshop:product_detail',
                       args=[self.id, self.slug])

views.py

from django.shortcuts import render, get_object_or_404
from .models import Category, Subcategory, Product
from cart.forms import CartAddProductForm


# View for product list in site
def product_list(request, category_slug=None, subcategory_slug=None):
    category = None
    categories = Category.objects.all()
    subcategory = None
    subcategories = Subcategory.objects.all()
    products = Product.objects.filter(available=True)
    if category_slug:
        category = get_object_or_404(Category, slug=category_slug)
        subcategory = get_object_or_404(Subcategory, slug=subcategory_slug)
        products = products.filter(category=category)
    return render(request,
                  'selcorshop/product/list.html',
                  {'category': category,
                   'categories': categories,
                   'subcategory': subcategory,
                   'subcategories': subcategories,
                   'products': products})


# View for single product
def product_detail(request, id, slug):
    product = get_object_or_404(Product,
                                id = id,
                                slug = slug,
                                available = True)
    # Add to cart button
    cart_product_form = CartAddProductForm()
    return render(request,
                  'selcorshop/product/detail.html',
                  {'product': product,
                   'cart_product_form': cart_product_form})

urls.py

from django.urls import path
from . import views
from django.conf import settings
from django.conf.urls.static import static


app_name = 'selcorshop'
urlpatterns =[
    path('', views.product_list, name='product_list'),
    path('/', views.product_list, name='product_list_by_category'),
    path('/', views.product_list, name='product_list_by_subcategory'),
    path('//', views.product_detail, name='product_detail'),
]
if settings.DEBUG:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

list.html

{% extends "selcorshop/base.html" %}
{% load static %}

{% block title %}
    {% if category %}{{ category.name }}{% else %}Produkty{% endif %}
{% endblock %}

{% block content %}



    
    
        
      Kategorie
    
    
        
            
                Wszystkie
            
            
            **{% for c in categories %}
            
                
                    {% for s in subcategories %}
                    
                        
                            {{ s.name }}
                        
                    
                    {% endfor %}
                
            {% endfor %}**
            
        










    



    {% if category %}{{ category.name }}{% else %}Produkty{% endif %}
    {% for product in products %}
        
            
                
            
            {{ product.name }}

            {{ product.price }} zł.
        
    {% endfor %}






{% endblock %}

Django - how to create proper categories and subcategories

Answers (1)

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