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  • Django2.2

    Django2.2

    报错处理

    • 与mysql不兼容

      ImproperlyConfigured: mysqlclient 1.3.13 or newer is required
      
      1. 添加新版组件:

        pip install mysqlclient
        
      2. 移除旧版组件:

        pip uninstall pymysql
        
      3. 删除app目录下pymysql调用

        import pymysql
        
        pymysql.install_as_MySQLdb()
        
    • FoginKey报错:

      TypeError: CASCADE() missing 4 required positional arguments: 'collector', 'field', 'sub_objs'
      
      author_detail = models.OneToOneField("AuthorDetails", on_delete=models.CASCADE())
      

      models.CASCADE不能加()

      author_detail = models.OneToOneField("AuthorDetails", on_delete=models.CASCADE)
      
    • ORM报错:

      解决ORM错误:django.db.utils.IntegrityError: (1452, 'Cannot add or update a child row: a foreign key constraint fails
      

      settings.py:取消外键检查

      # settings.py
      # 取消外键检查
      'OPTIONS':{
              "init_command":"SET foreign_key_checks = 0;",
      # 完整:
      DATABASES = {
          'default': {
              'ENGINE': 'django.db.backends.mysql',
              'NAME': 'test',
              'HOST':'127.0.0.1',
              'PORT':3306,
              'USER':'root',
              'PASSWORD':'123',
              'OPTIONS': {
                  "init_command": "SET foreign_key_checks = 0;",
              }
          }
      }
      
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  • 原文地址:https://www.cnblogs.com/relaxlee/p/12842917.html
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