我不能通过变量从Django数据库添加图片

from django.db import models

class MyModel(models.Model):
    image = models.ImageField(upload_to='images/')

def upload_image(request):
    if request.method == 'POST':
        form = MyForm(request.POST, request.FILES)
        if form.is_valid():
            my_model = form.save(commit=False)
            my_model.save()
            return redirect('success')
    else:
        form = MyForm()
    return render(request, 'upload.html', {'form': form})

<img src="{{ my_model.image.url }}" alt="My Image">