#models.py
class Gallery(models.Model):
    title = models.CharField(max_length=256,null=True)
    file = models.FileField(upload_to="files/%Y/%m/%d")
    publish = models.DateTimeField(default=timezone.now)
    slug = models.SlugField(unique_for_date='publish', max_length=250)

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('posts:gallery_detail', args=[
            self.publish.year,
            self.publish.strftime('%m'),
            self.publish.strftime('%d'),
            self.slug])
#views.py
def gallery_list(request):
    image = Gallery.objects.all()
    return render(request,'posts/gallery.html',{'image':image})

def gallery_detail(request,year,month,day,image):
    images = get_object_or_404(Gallery.objects.filter(),slug = image,
                               publish__year=year,
                               publish__month=month,
                             publish__day=day,)
    return render(request,'posts/gallery_detail.html',{'images': images})
  
#galery_detail
{% extends 'posts/post_base'%}
{% block image %}
    {% for image in images   %}
     <div class="col-md-8">
        <h1>{{ image.title }}</h1>
         <img src="{{ image.file.url }}" alt="">
       </div>
    {% endfor %}
{% endblock %}