Я могу перебирать различные продукты, используя
<li
{ % if not category % }class = "selected" {% endif % }>
<a href="{% url "shop:product_list" %}">All</a>
</li>
{% for c in categories %}
<li {% if category.slug == c.slug %}class="selected"{% endif %}>
<a href="{{ c.get_absolute_url }}">{{ c.name }}</a>
</li>
{% endfor %}
это мой код для выпадающего списка, но он ничего не показывает после книг.
<li class="nav-item dropdown ">
<a class="nav-link dropdown-toggle" href="#" id="navbardrop" data-toggle="dropdown">
Categories
</a>
<p class=" dropdown-menu ">
<a class="dropdown-item" href="{% url 'shop:product_list' %}">All</a>
<a class="dropdown-item" href="#">Electronics</a>
<a class="dropdown-item" href="#">Books</a>
<ul>
<li {% if not category %}class="selected"{% endif %}>
<a href="{% url "shop:product_list" %}">All</a>
</li>
{% for c in categories %}
<li {% if category.slug == c.slug %}class="selected"{% endif %}>
<a class="dropdown-item" href="{{ c.get_absolute_url }}">{{ c.name }}</a>
</li>
{% endfor %}
</ul>
</p>
</li>
Я хочу добавить этот код в раскрывающийся список
<li {% if not category %}class="selected"{% endif %}>
<a href="{% url "shop:product_list" %}">All</a>
</li>
{% for c in categories %}
<li {% if category.slug == c.slug %}class="selected"{% endif %}>
<a class="dropdown-item" href="{{ c.get_absolute_url }}">{{ c.name }}</a>
</li>
{% endfor %}
но этот код ничего не показывает в выпадающем списке
мой файл views.py:
from django.shortcuts import render, get_object_or_404
from .models import Category, Product
def product_list(request, category_slug=None):
category = None
categories = Category.objects.all()
products = Product.objects.filter(available=True)
if category_slug:
category = get_object_or_404(Category, slug=category_slug)
products = products.filter(category=category)
return render(request, 'shop/products/list.html', {
'category': category,
'categories': categories,
'products': products
})
my models.py:
from django.db import models
from django.urls import reverse
class Category(models.Model):
name = models.CharField(max_length=200, db_index=True)
slug = models.SlugField(max_length=200, db_index=True, unique=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('shop:product_list_by_category', args=[self.slug])
class Product(models.Model):
category = models.ForeignKey(Category, related_name='products', on_delete=True)
name = models.CharField(max_length=200, db_index=True)
slug = models.SlugField(max_length=200, db_index=True, unique=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)
stock = models.PositiveIntegerField()
available = models.BooleanField(default=True)
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now_add=True)
class Meta:
ordering = ('-created',)
index_together = (('id', 'slug'),)
def __str__(self):
return self.name
----------------------------------------------- ---------------------------------