django ModelForm修改显示缩略图 imagefield类型的实例

from django.forms.widgets import ClearableFileInput  class ImageWidget(ClearableFileInput):   template_with_initial = (    '%(initial_text)s: <a href="%(initial_url)s" rel="external nofollow" ><img width="100px" height="100px" src="%(initial_url)s"></a> '    '%(clear_template)s<br />%(input_text)s: %(input)s'  )   template_with_clear = ''

ClearableFileInput

class XXXForm(forms.ModelForm):   class Meta:    model = XXX    exclude = ['XXX', 'is_XXX']    widgets = {'backend_image':ImageWidget}