表main_about没有名为featured_image的列。

Question

我说table main_about has no column named featured_image时出错了。我尝试过运行python manage.py makemigrations和python manage.py migrate，但是它不起作用。我唯一能想到的就是删除数据库，但我希望避免这样做。我看你可以手动添加列通过shell吗？

views.py

def about_view(request):
    context = {
        "about": About.objects.first(),
    }
    return render(request, "main/about.html", context)

models.py

class About(models.Model):
    featured_image = models.ImageField(upload_to="about")
    about_text = models.TextField()

    def image_tag(self):
        return mark_safe('<img src="%s" style="height: 150; width: auto;"/>' % (self.featured_image.url))

    image_tag.short_description = 'Image'

    class Meta:
        verbose_name_plural = "About Page"

    def __str__(self):
        return "About Page"

Answer 1

添加模型后，确保执行了这些命令

python manage.py makemigrations
python manage.py migrate

如果您仍然遇到相同的问题，请尝试像这样执行它

python manage.py makemigrations <yourapp>

希望这对^_^有帮助