Django修改数据库时出错 django.db.utils.OperationalError: (1091, "Can't DROP 'content'; check that column/key exists")

报错信息：

django.db.utils.OperationalError: (1091, "Can't DROP 'content'; check that column/key exists")

可能数据库中的字段结构已经完成了此字段的修改但是在

   python manage.py makemigrations 新生成的migrations/0002_auto_20191011_2104.py文件中  可能还会有删除字段的操作

查看一下该文件：

from django.db import migrations


class Migration(migrations.Migration):

    dependencies = [
        ('autotest', '0001_initial'),
    ]

    operations = [
        migrations.RemoveField(
            model_name='configfile',
            name='content',
        ),
        migrations.RemoveField(
            model_name='flow',
            name='content',
        ),
        migrations.RemoveField(
            model_name='node',
            name='content',
        ),
    ]
果然有删除操作
问题解决：
注释该内容

from django.db import migrations


class Migration(migrations.Migration):

    dependencies = [
        ('autotest', '0001_initial'),
    ]

    operations = [
        # migrations.RemoveField(
        #     model_name='configfile',
        #     name='content',
        # ),
        # migrations.RemoveField(
        #     model_name='flow',
        #     name='content',
        # ),
        # migrations.RemoveField(
        #     model_name='node',
        #     name='content',
        # ),
    ]

重新执行python manage.py migrate 就好啦