Django 从不同型号获得特色图像

我有两个模型对象，Business和BusinessImage，与视图和index.html一起列出。我试图列出企业的特色形象，但它没有发生。我得到以下错误：

“QuerySet”对象没有属性“businessimage\u set”

如何获取列表的业务特色图像

业务

class Business(models.Model):
    name = models.CharField("Name", max_length=70, default="Business Name")
    slug = models.SlugField()
    description = models.TextField("About", max_length=400)
    category = models.ManyToManyField(Category, verbose_name="Categories", blank=True)
    order = models.IntegerField("Order", default=0)
    claimed = models.BooleanField("Claimed", default=False)
    featured = models.BooleanField("Featured", default=False)

    class Meta:
        ordering = ['order']
        verbose_name = "Business"
        verbose_name_plural = "Businesses"

    def __str__(self):
        return self.name

商业形象

class BusinessImage(models.Model):
    business = models.ForeignKey(Business)
    image = models.ImageField(upload_to="images/business")
    title = models.CharField(max_length=120)
    featured = models.BooleanField(default=False)
    timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)
    updated = models.DateTimeField(auto_now_add=False, auto_now=True)

    def __str__(self):
        return self.title

view.py

from .models import Business, BusinessImage

def index_view(request):
    latest_business_list = Business.objects.all()
    images = latest_business_list.businessimage_set.all()
    template = loader.get_template('index.html')
    context = RequestContext(request, {
        'latest_business_list': latest_business_list,
        'images': images,
    })
    return HttpResponse(template.render(context))

index.html

{% block content %}

<div class="text-center business_title">
    <h2>Featured</h2>
</div>

{% if latest_business_list %}
{% for business in latest_business_list|slice:":4" %}
{% if business.active %}
<div class="col-sm-6 col-md-3">
    <li><a href="business/{{ business.slug }}/">{{ business.name }}</a></li>
{% for image in latest_business_list.businessimage_set.all %}
        {% if image.featured %}
        <a href="{% url 'single_product' product.slug %}">
            <img src="{{MEDIA_URL}}{{image.image}}" alt="{{image}}">
        </a>
        {% endif %}
{% endfor %}
</div>
{% endif %}
{% endfor %}
{% endif %}
{% endblock %}

{%block content%}
作为特色的
{%if最新业务列表%}
{最新业务列表中的业务百分比|切片：：4“%}
{%if business.active%}

{最新\u business\u list.businessimage\u set.all%}
{%if image.featured%}
{%endif%}
{%endfor%}
{%endif%}
{%endfor%}
{%endif%}
{%endblock%}

businessimage\u set

是

业务

实例的一个属性，但您试图将其作为查询集（即业务列表）的一个属性进行访问。如果您的目标只是能够访问模板中每个业务的图像，则可以完全忽略

图像。相反，您的模板将具有：

{% for image in business.businessimage_set.all %}

（尽管查看与预取相关的
以提高效率。）