django 带外键模型 create 问题 - V2EX
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lixuda
V2EX    Django

django 带外键模型 create 问题

  •  
  •   lixuda 2021-02-02 11:06:57 +08:00 2576 次点击

    from django.db import models

    class Blog(models.Model): # ... pass

    class Entry(models.Model): blog = models.ForeignKey(Blog, on_delete=models.CASCADE,db_cOnstraint=False)

    当 db_cOnstraint=False 时, 保存也必须要调用 Model 吗? Entry.objects.create(Blog(id=1)) 有没有能直接值传入吗? Entry.objects.create(blog=1)

    7 条回复    2021-02-02 18:52:08 +08:00
    johnsona
        1
    johnsona  
       2021-02-02 11:18:02 +08:00 via iPhone
    大厂都是不允许应用框架代码直接线上 ddl,也就是 django 的 migrage,出问题这锅是你开发背还是人运维背
    都是开发把 sql 给到 dba 去执行
    如果小厂,管他外键呢,说得有多大流量似的
    pepesii
        2
    pepesii  
       2021-02-02 12:40:06 +08:00   1
    @johnsona #1 人家就问个问题,很明显人家是初学者,你非要答非所问
    pepesii
        3
    pepesii  
       2021-02-02 12:41:05 +08:00   2
    Entry.objects.create(blog_id=1, **kwargs)
    johnsona
        4
    johnsona  
       2021-02-02 12:44:01 +08:00 via iPhone
    @pepesii 酱紫的吗 我的意思是不要用那个 db_condtraint 该怎么来怎么来 不用他迁移就好了
    lixuda
        5
    lixuda  
    OP
       2021-02-02 12:46:12 +08:00
    @johnsona 不用 db_condtraint,join 好像无法操作?手写 sql ?
    lixuda
        6
    lixuda  
    OP
       2021-02-02 12:51:13 +08:00
    @pepesii 感谢,已解决
    zoharSoul
        7
    zoharSoul  
       2021-02-02 18:52:08 +08:00
    @lixuda 他的意思是手动建表
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