Django Admin 实现外键过滤的方法

说明和 Model 环境: ➜ python Python 3.6.3 |Anaconda custom (x86_64)| (default, Oct 6 2017, 12:04:38) [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin Type help, copyright, credits or license for more information. >>> import django >>> print(django.get_version()) 2.0.1 >>> 20