小编BWr*_*tes的帖子

所以我正在尝试将SearchVectorField添加到 Django 中的模型中：

class JobPosting(models.Model):
    ...
    ...
    search_vector = SearchVectorField()

我知道它应该是nullable或具有默认值才能迁移，因此我删除了表中的所有条目以防止出现此问题。

但是，运行时出现以下错误makemigrations：

You are trying to add a non-`nullable` field 'search_vector' to jobposting without a default;
we can't do that (the database needs something to populate existing rows).
Please select a fix:
   1) Provide a one-off default now
      (will be set on all existing rows with a null value for this column)
   2) Quit, and let me add a default in models.py
Select an …