已解決:執行python manage.py makemigrations時提示錯誤:__init__() missing 1 required positional argument: 'on
阿新 • • 發佈:2018-12-12
報錯資訊如下:
(blog) λ python manage.py makemigrations Traceback (most recent call last): File "manage.py", line 15, in <module> execute_from_command_line(sys.argv) File "D:\python-workspace\TEST\my_env\blog\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line utility.execute() File "D:\python-workspace\TEST\my_env\blog\lib\site-packages\django\core\management\__init__.py", line 357, in execute django.setup() File "D:\python-workspace\TEST\my_env\blog\lib\site-packages\django\__init__.py", line 24, in setup apps.populate(settings.INSTALLED_APPS) File "D:\python-workspace\TEST\my_env\blog\lib\site-packages\django\apps\registry.py", line 112, in populate app_config.import_models() File "D:\python-workspace\TEST\my_env\blog\lib\site-packages\django\apps\config.py", line 198, in import_models self.models_module = import_module(models_module_name) File "D:\python-workspace\TEST\my_env\blog\lib\importlib\__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1006, in _gcd_import File "<frozen importlib._bootstrap>", line 983, in _find_and_load File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 677, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 728, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "D:\python-workspace\TEST\my_env\blog\workspace\mysite\blog\models.py", line 7, in <module> class BlogArticles(models.Model): File "D:\python-workspace\TEST\my_env\blog\workspace\mysite\blog\models.py", line 9, in BlogArticles author = models.ForeignKey(User, related_name="blog_posts") TypeError: __init__() missing 1 required positional argument: 'on_delete'
主要資訊為:
BlogArticles
author = models.ForeignKey(User, related_name="blog_posts")
TypeError: __init__() missing 1 required positional argument: 'on_delete'
解決方法:在author定義的內容中新增一行內容
on_delete=models.CASCADE
再次執行python manage.py makemigrations命令即可正常執行