Webauto\u now 进行修改： from django.utils import timezone class User(models.Model): created = models.DateTimeField(default=timezone.now()) modified = models.DateTimeField(auto_now=True) 如果您使用的是自定义主键而不是默认的 自动增量int ， auto\u now\u add 将导致错误. 这是Django的默认代码，带有 auto\u now 和

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WebMay 26, 2024 · You are trying to add the field 'created_at' with 'auto_now_add=True' to user wi thout a default; the database needs something to populate existing rows. 1) Provide a … Webscore:1. You can use timezone.now () for created and auto_now for modified: from django.utils import timezone class User (models.Model): created = … darren bucknall rawcliffe

DateField - Django Forms - GeeksforGeeks

Webauto_now 和 auto_now_add 选项将始终使用创建或更新时 默认时区 的日期。 如果你需要一些不同的东西，你可能需要考虑使用你自己的可调用的默认值，或者覆盖 save() 而不 … WebThere is a little issue with using "auto_now" and "auto_now_add" together in one model. Because the time is set by calling datetime.now () in the pre_save method of the field, … WebThere is a little issue with using "auto_now" and "auto_now_add" together in one model. Because the time is set by calling datetime.now () in the pre_save method of the field, using together more than one such field would lead to different values for every field. This is bad, as one expects that the time is the time of the creation or change of ... bison polymax high tack