外鍵使遷移

Question

Django的1.10

我只是想以統一的公共領域中的一般模型，然後從它繼承。我不知道我還能如何堅持DRY原則。但我無法進行遷移。你能在這裏給我一個建議嗎？

class GeneralModel(models.Model): 
    created_by = models.ForeignKey(User, on_delete=models.CASCADE, related_name="created_by") 

    class Meta: 
     abstract = True 

class Image(GeneralModel): 
    ... 

class Masterphoto(GeneralModel): 
    ... 

回溯

python manage.py makemigrations 
SystemCheckError: System check identified some issues: 

ERRORS: 
image.Image.created_by: (fields.E304) Reverse accessor for 'Image.created_by' clashes with reverse accessor for 'Masterphoto.created_by'. 
    HINT: Add or change a related_name argument to the definition for 'Image.created_by' or 'Masterphoto.created_by'. 
image.Image.created_by: (fields.E305) Reverse query name for 'Image.created_by' clashes with reverse query name for 'Masterphoto.created_by'. 
    HINT: Add or change a related_name argument to the definition for 'Image.created_by' or 'Masterphoto.created_by'. 
masterphoto.Masterphoto.created_by: (fields.E304) Reverse accessor for 'Masterphoto.created_by' clashes with reverse accessor for 'Image.created_by'. 
    HINT: Add or change a related_name argument to the definition for 'Masterphoto.created_by' or 'Image.created_by'. 
masterphoto.Masterphoto.created_by: (fields.E305) Reverse query name for 'Masterphoto.created_by' clashes with reverse query name for 'Image.created_by'. 
    HINT: Add or change a related_name argument to the definition for 'Masterphoto.created_by' or 'Image.created_by'. 

Answer 1

這不是什麼關係遷移。

相關名稱必須是唯一的。 model inheritance docs解釋在這種情況下要做什麼;您可以使用'%(app_label)s'和'%(class)s'自動將相關名稱插入生成的值中。