Thumbnails in admin using django-thumbnails-works

**models.py**

    class Person(models.Model):
        name = models.CharField(max_length=200)
        photo = EnhancedImageField(
            upload_to="photos/%Y/%m/%d",
            process_source = dict(
                size='512x384', sharpen=True, upscale=True, format='JPEG'),
            thumbnails = {
                'avatar': dict(size='80x60'),
                'medium': dict(size='256x192', detail=True),
            }
            )

**admin.py**
  
    from django.contrib import admin
    from django.contrib.admin.widgets import AdminFileWidget
    from django import forms
    from django.utils.safestring import mark_safe

    from mysite import models
    from mysite.models import Person
    
    class AdminImageWidget(AdminFileWidget):

        def render(self, name, value, attrs=None):
            output = []
            output.append('<a target="_blank" href="%s"><img src="%s"/></a><br />' % \
                (value.avatar.url, value.avatar.url))
    
            output.append(super(AdminFileWidget, self).render(name, value, attrs))
            return mark_safe(u''.join(output))
    
    
    
    
    class PersonAdmin(admin.ModelAdmin):
        formfield_overrides = {
            models.EnhancedImageField: {'widget': AdminImageWidget},
    }
    
    admin.site.register(Person, PersonAdmin)