我一直在到处寻找类似的案例,但没有找到任何可以解决我问题的方法。我想在for循环中显示来自html中模型的图像,该循环具有if条件。这是my models.py:
from django.db import models
# Create your models here.
class CarouselItem(models.Model):
carousel_picture = models.ImageField(upload_to='carousel_images/', null=True, blank=True)
views.py:
from django.shortcuts import render
from .models import CarouselItem
# Create your views here.
def index(request):
carousel_items = CarouselItem.objects.all()
context = {
'carousel_items': carousel_items
}
return render(request, "home/index.html", context=context)
和我的html:
{% if carousel_items %}
<div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
<div class="carousel-inner">
{% for item in carousel_items %}
{% if forloop.first %}
<div class="carousel-item active">
<img src="{% item.carousel_picture.url %}" class="d-block w-100" alt="...">
</div>
{% else %}
<div class="carousel-item">
<img src="{% item.carousel_picture.url %}" class="d-block w-100" alt="...">
</div>
{% endif %}
{% endfor %}
<a class="carousel-control-prev" href="#carouselExampleControls" role="button" data-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="carousel-control-next" href="#carouselExampleControls" role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
{% else %}
<h3>We are sorry, there are currently no Images to display</h3>
{% endif %}
当我想要访问与html关联的页面时,我会收到以下错误消息:
Invalid block tag on line 86: 'item.carousel_picture.url', expected 'elif', 'else' or 'endif'. Did you forget to register or load this tag?
我觉得我在别的地方犯了一个错误,但我不知道那是什么。我使用的是Bootstrap4.5.3和Django3.1.5
此项目中的所有其他html文件都没有使用for循环显示图像的问题
而不是使用:
{% item.carousel_picture.url %}
对于模板逻辑,请使用:
{{ item.carousel_picture.url }}
它使用该值
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