Python-сообщество

class Image(models.Model):
    name = models.CharField(u'Имя', max_length=50, unique=True)
    image = models.ImageField(u'Фото', upload_to=u'upload/images')

from project.images.models import Image
class Post(models.Model):
    images = models.ManyToManyField(Image, verbose_name=u'Изображения')
    ...

class Post(models.Model):
     image_1 = models.ImageField(u'Фото 1', upload_to=u'upload/images')
     image_2 = models.ImageField(u'Фото 2', upload_to=u'upload/images')
     image_3 = models.ImageField(u'Фото 3', upload_to=u'upload/images')