这是一个新手的问题，但是我如何在Django的默认管理中显示一个图片的缩略图，而不是显示该图片的路径呢？
Models.py

from django.db import models

class Project(models.Model):
    name = models.CharField(max_length=200)
    description = models.CharField(max_length=500)
    thumbnail = models.ImageField(upload_to="media")

    def __str__(self):
        return self.name

class Image(models.Model):
    project = models.ForeignKey(Project)
    title = models.CharField(max_length=200)
    image = models.ImageField(upload_to="media")
    pub_date = models.DateTimeField('date published')

    def admin_thumbnail(self):
        return u'<img src="%s" />' % (self.image.url)
    admin_thumbnail.short_description = 'Thumbnail'
    admin_thumbnail.allow_tags = True

Admin.py

from .models import Project, Image

class ImageInline(admin.TabularInline):
    model = Image
    extra = 0

class ImageAdmin(admin.ModelAdmin):
    fieldsets = [
        (None,               {'fields': ['project']}),
        (None,               {'fields': ['title']}),
        (None,               {'fields': ['image']}),
        ('Date information', {'fields': ['pub_date'], 'classes': ['collapse']}),
    ]

class ProjectAdmin(admin.ModelAdmin):
    fieldsets = [
        (None,               {'fields': ['name']}),
        (None,               {'fields': ['thumbnail']}),
    ]
    inlines = [ImageInline]
    search_fields = ["name"]

admin.site.register(Project, ProjectAdmin)
admin.site.register(Image, ImageAdmin)

我不知道是否有一个更简单的方法来做这件事或没有，但无论答案将工作。谢谢！