如何按特定类别展示我的产品

Question

所以我正在制作一个电子商务网站，并且我正在使用 Django。我很新，我正在使用一个教程，但是因为我想在我的网站上拥有 2 个类别，甚至更多类别，所以我已经不再接触它。我希望能够按类别显示它们，并且我在我的不和谐服务器周围寻求帮助，有些人试图提供帮助，它确实通过了我的所有产品，但是我有一个 if 语句并且 if 语句被忽略

那么任何人都可以告诉我一种方法来展示其类别设置为仅特价的产品吗？还是只有帽子盒？

Store.Html

{% extends 'store/main.html' %}
{% load static %}
{% block content %}
    <title>Store</title>
    <h2>Our Stylish Hat Boxes - from the smallest to the largest.</h2>
    <div class="row" style="padding-bottom: 5%;">
        
        {% if products.category == Hatbox %}
        {% for product in products %}
        
        <div class="col-sm-4-fluid" style="margin-right: 5%;">
        <div class="card" style="width:300px;">
            <img class="card-img-top" src="{{product.imageURL}}" alt="Card image">
            <div class="card-body">
                <h5 style="display: inline-block; float:right;"><strong>
                £ {{product.price|floatformat:2}}</strong></h5>
                <h6 class="card-title">{{product.name}}</h6>
                <a href="#" class="btn btn-primary">View</a>
                </div>
            </div>
        </div>
        
        {% endfor %}
        {% endif %}
        
        </div>
    <h2>Something Special...</h2>
    <div class="row" style="padding-bottom: 5%;">
        
        {% for product in products %}
        {% if products.categorys.name == "Specials" %}

        <div class="col-sm-4-fluid" style="margin-right: 5%;">
            <div class="card" style="max-width:300px;min-width: 50px;">
                <img class="card-img-top" src="{{product.imageURL}}" alt="Card image">
                <div class="card-body">
                    <h5 style="display: inline-block; float:right;"><strong>
                    £ {{.price|floatformat:2}}</strong></h5>
                    <h6 class="card-title">{{product.name}}</h6>
                    <a href="#" class="btn btn-primary">View</a>
                    </div>
                </div>
            </div>
            
            {% endif %}
            {% endfor %}
            
            
    </div>
        
{% endblock content %}

views.py

​​>

from django.shortcuts import render
from .models import *

# Create your views here.
def store(request):
    products = Product.objects.all()
    categorys = Category.objects.all()

    size = Size.objects.all()
    context = {
        "categorys":categorys,
        'products':products,
        'size':size
    }
    return render(request, 'store/store.html', context)

def cart (request):
    context = {}
    return render(request, 'store/cart.html', context)

def checkout(request):
    context = {}
    return render(request, 'store/checkout.html', context)

def index(request):
    context = {}
    return render(request, 'store/index.html', context)

def contacts(request):
    context = {}
    return render(request, 'store/contacts.html', context)

models.py

​​>

from django.db import models
from django.contrib.auth.models import User

# Create your models here.

class Customer(models.Model):
    user = models.OneToOneField(User, null=True, blank=True, on_delete=models.CASCADE)
    name = models.CharField(max_length=200, null=True)
    email = models.CharField(max_length=200)

    def __str__(self):
        return self.name

class Category(models.Model):
    nameOfCategory = models.CharField(max_length=200)

    def __str__(self):
        return self.nameOfCategory

class Size(models.Model):
    size = models.CharField(max_length=200)

    def __str__(self):
        return self.size

class Product(models.Model):
    name = models.CharField(max_length=200, blank=True)
    size = models.ForeignKey(Size, null=True, blank=True, on_delete=models.CASCADE)
    price = models.FloatField()
    ribbon_band = models.CharField(max_length=200, null=True, blank=True)
    flowers = models.CharField(max_length=200,null=True, blank=True)
    exterior_band = models.CharField(max_length=200, null=True, blank=True)
    diamondFlowers = models.BooleanField(default=False)
    category = models.ForeignKey(Category, null=True, blank=True, on_delete=models.CASCADE)
    image = models.ImageField(null=True, blank=True)

    def __str__(self):
        return self.name

    @property
    def imageURL(self):
        try:
            url = self.image.url
        except:
            url = ''
        return url

class Order(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.SET_NULL, null=True, blank=True)
    date_ordered = models.DateTimeField(auto_now_add=True)
    complete = models.BooleanField(default=False)
    transaction_id = models.CharField(max_length=100, null=True)

    def __str__(self):
        return str(self.id)

class OrderItem(models.Model):
    product = models.ForeignKey(Product, on_delete=models.SET_NULL, null=True)
    order = models.ForeignKey(Order, on_delete=models.SET_NULL, null=True)
    quantity = models.IntegerField(default=0, null=True, blank=True)
    date_added = models.DateTimeField(auto_now_add=True)


class ShippingAddress(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.SET_NULL, null=True)
    order = models.ForeignKey(Order, on_delete=models.SET_NULL, null=True)
    address = models.CharField(max_length=200, null=False)
    city = models.CharField(max_length=200, null=False)
    state = models.CharField(max_length=200, null=False)
    zipcode = models.CharField(max_length=200, null=False)
    date_added = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.address

admin.py

​​>

from django.contrib import admin

from .models import *

admin.site.register(Customer)
admin.site.register(Product)
admin.site.register(Order)
admin.site.register(OrderItem)
admin.site.register(ShippingAddress)
admin.site.register(Category)
admin.site.register(Size)

Answer 1

代码中的 if 语句将不起作用，因为 {% if products.categories == Hatbox %} 中的 products 没有任何类别，因为它不是单个类别对象。 if 语句也缺少 Hatbox 周围的引号。在下面试试这个：

观看次数

def store(request):
    categorys = Category.objects.all()

    context = {
        'categorys': categorys,
    }
    return render(request, 'store/store.html', context)

store.html

    {% for category in categorys %}
        <h1>{{ category.nameOfCategory }}</h1>
        {% for product in category.product_set.all %}
            {{ product.name }}
            {{ product.price }}
            {{ product.size.size }}
        {% endfor %}
    {% endfor %}

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