django-图像剪切不起作用

Question

尝试使用django-图像剪切。我没有任何错误，我只是在Django管理中有一个类似于CharField的功能，而不是django-图像剪切功能：

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base.py (设置)：

from easy_thumbnails.conf import Settings as thumbnail_settings
THUMBNAIL_PROCESSORS = (
    'image_cropping.thumbnail_processors.crop_corners',
) + thumbnail_settings.THUMBNAIL_PROCESSORS

将easy_thumbnails和image_cropping添加到INSTALLED_APPS

models.py：

from image_cropping import ImageRatioField
# ...
class Organization(models.Model):
    image_cover = models.ImageField(upload_to='media', blank=True, help_text="blah")
    cropping = ImageRatioField('image_cover', '308x850')

admin.py：

from django.contrib import admin
from image_cropping import ImageCroppingMixin

class OrganizationAdmin(ImageCroppingMixin, admin.ModelAdmin):
    pass

class OrganizationAdmin(admin.ModelAdmin):
    filter_horizontal=['categorys']
    #...

admin.site.register(Organization, OrganizationAdmin)

Answer 1

您在OrganizationAdmin中定义了两次admin.py。一次，正确地，子类ImageCroppingMixin和一次不。因为后一种定义覆盖了前者，所以你最终没有了Mixin。它应该是这样的：

from django.contrib import admin
from image_cropping import ImageCroppingMixin

class OrganizationAdmin(ImageCroppingMixin, admin.ModelAdmin):
    filter_horizontal=['categorys']
    #...

admin.site.register(Organization, OrganizationAdmin)