如何在django中清理图像字段内容，以确保它不包含html表单？

from django.db import models

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

from django import forms
from .models import MyModel

class MyForm(forms.ModelForm):
    class Meta:
        model = MyModel
        fields = ['image']

    def clean_image(self):
        image = self.cleaned_data.get('image')
        if image:
            # 清理图像字段内容，确保不包含HTML表单
            cleaned_image = ...  # 进行清理操作
            return cleaned_image
        return image

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST, request.FILES)
        if form.is_valid():
            cleaned_image = form.cleaned_data['image']
            # 保存清理后的图像字段内容
            cleaned_image.save()
            return render(request, 'success.html')
    else:
        form = MyForm()
    return render(request, 'my_form.html', {'form': form})