Django: InlineAdmin and ManyToManyField with 'through'

I'm having a simple Gallery model, that is related to an Image model via a many-to-many relationship through a table that has an ordering-attribute:

# models.py
class Image(models.Model):
    ....

class Gallery(models.Model):
    images = models.ManyToManyField(Image, through='ImageGallery')
    ....

class ImageGallery(models.Model)
    image = models.ForeignKey(Image)
    gallery = models.ForeignKey(Gallery)
    ordering = models.PositiveIntegerField(_('ordering'), default=0)

# admin.py
class ImageGalleryAdmin(admin.ModelAdmin):
    model = ImageGallery

class GalleryAdmin(admin.ModelAdmin):
    inlines = (ImageGalleryAdmin,)

I'm editing the 'through' table via an inline admin.

What I'd like to do is to be able to upload/edit the images directly in the inline admin, so I'd like to know if anybody knows an exisiting snippet, that allows me to edit the field of the 'through'-table together with the fields of the referenced mo开发者_运维问答del (the image), not needing to edit the foreign key select....

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It seems this question has already been answered here:

Django admin - inline inlines (or, three model editing at once)

You need to create a custom form and template for the inline which references the linked object.

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I might not have understood your question. Can't you just use:

class ImageAdmin (admin.ModelAdmin)

inlines = (ImageGalleryAdmin,)

admin.site.register(Image, ImageAdmin)