如何在Django Admin中进行图片处理和缩略图生成

pip install Pillow
pip install django-imagekit

from django.db import models
from django.utils.html import format_html
from imagekit.models import ImageSpecField
from imagekit.processors import ResizeToFill

class MyModel(models.Model):
    name = models.CharField(max_length=50)
    image = models.ImageField(upload_to='images')
    thumbnail = ImageSpecField(source='image',
                               processors=[ResizeToFill(100, 100)],
                               format='JPEG',
                               options={'quality': 60})

    def __str__(self):
        return self.name

    def image_tag(self):
        return format_html('<img src="{}" width="150" />'.format(self.thumbnail.url))

    image_tag.short_description = 'Thumbnail'

from django.contrib import admin
from .models import MyModel

class MyModelAdmin(admin.ModelAdmin):
    list_display = ('name', 'image_tag')

admin.site.register(MyModel, MyModelAdmin)

{% if object.image %}
    <img src="{{ object.thumbnail.url }}" alt="{{ object.name }}">
{% else %}
    No image available
{% endif %}