Django 实现admin后台显示图片缩略图的例子

from django.utils.safestring import mark_safe
from django.contrib import admin

@admin.register(AliOSSFile)
class AliOssUploadAdmin(admin.ModelAdmin):
  def upload_img(self, obj):
    try:
      img = mark_safe('<img src="%s" width="50px" />' % (obj.file.url,))
    except Exception as e:
      img = ''
    return img
  upload_img.short_description = 'Thumb'
  upload_img.allow_tags = True

  list_display = ['id', 'ali_id', 'file', 'upload_img', 'created_time']
  readonly_fields = ['upload_img']