在Django中按类别而不是按产品搜索

Question

我创建了一个搜索栏，该搜索栏根据产品名称进行搜索。我现在想将其更改为按类别搜索，但是我发现很难。这是我的网址文件：'''

from django.conf.urls import url
from . import views


urlpatterns = [
    url(r'^$', views.marketplaceHome, name='marketplace-home'),
    url(r'^search/$', views.search, name='search'),
    url(r'^contact/$', views.Contact, name='contact'),
    url(r'^(?P<category_slug>[-\w]+)/(?P<product_slug>[-\w]+)/$', views.productPage, name='product_detail'),
    url(r'^(?P<category_slug>[-\w]+)/$', views.marketplaceHome, name='products_by_category'),
    url('^cart$', views.cart_detail, name='cart_detail'),
    url(r'^cart/add/(?P<product_id>[-\w]+)/$', views.add_cart, name='add_cart'),
    url(r'^cart/remove/(?P<product_id>[-\w]+)/$', views.cart_remove, name='cart_remove'),
    url(r'^cart/remove_product/(?P<product_id>[-\w]+)/$', views.cart_remove_product, name='cart_remove_product'),
         ]

'''views.py'''

from __future__ import unicode_literals

from django.shortcuts import render, get_object_or_404, redirect
from .models import Category, Product, Cart, CartItem
from django.core.exceptions import ObjectDoesNotExist
from . import forms

# Create your views here.

def marketplaceHome(request, category_slug=None):
    category_page = None
    products = None
    if category_slug !=None:
        category_page = get_object_or_404(Category, slug=category_slug)
        products = Product.objects.filter(category=category_page, available=True)
    else:
        products = Product.objects.all().filter(available=True)
    return render(request, 'marketplacehome.html', {'category': category_page, 'products': products})


def productPage(request, category_slug, product_slug):
    try:
        product = Product.objects.get(category__slug=category_slug, slug=product_slug)
    except Exception as e:
        raise e
    return render(request, 'product.html', {'product': product})


def search(request):
    products = Product.objects.filter(name__contains=request.GET['name'])
    return render(request, 'marketplacehome.html', { 'products': products})

'''template.html'''

<ul class="navbar-nav ml-auto">
  <form class="form-inline" action="{% url 'search' %}", method="GET">
      <div class="input-group">
        <input type="text" name="name" class="form-control" placeholder="Location" aria-label="Search" name="query">
        <div class="input-group-append">
          <button type="button" class="btn btn-warning" name="button"><i class="fas fa-search"></i></button>
        </div>
      </div>

'''models.py'''

class Category(models.Model):
    name = models.CharField(max_length=250, unique=True)
    slug = models.SlugField(max_length=250, unique=True)
    description = models.TextField(blank=True)


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

    def get_url(self):
        return reverse('products_by_category', args=[self.slug])


    def __str__(self):
        return self.name


class Product(models.Model):
    name = models.CharField(max_length=250, unique=True)
    slug = models.SlugField(max_length=250, unique=True)
    description = models.TextField(blank=True)
    image = models.ImageField(upload_to="product", blank=True)
    category = models.ForeignKey(Category, on_delete=models.CASCADE)
    single_price = models.DecimalField(max_digits=10, decimal_places=2)
    twelve_lesson_price = models.DecimalField(max_digits=10, decimal_places=2)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    available = models.BooleanField(default=True)


    class Meta:
        ordering = ('name',)
        verbose_name = 'product'
        verbose_name_plural = 'products'

    def get_url(self):
        return reverse('product_detail', args=[self.category.slug, self.slug])

    def __str__ (self):
        return self.name

'''

此结构成功返回了按名称搜索的产品，但是当我将其更改为类别时，它不起作用。任何帮助将不胜感激。

Answer 1

您可以使用：

def search(request):
    products = Product.objects.filter(category__name__icontains=request.GET['name'])
    return render(request, 'marketplacehome.html', { 'products': products})

因此，您在此处搜索对象的name的category是否包含给定的request.GET['name']。

您可以使用__icontains区分大小写in，或__contains区分大小写。