Python 如何处理 Django 中的数据库异常
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How to handle database exceptions in Django
提问by Prometheus
I want to known the best way to handle database exceptions and display messages back to the user. I have been looking at messages.add_messagein my views using a try.
我想知道处理数据库异常并向用户显示消息的最佳方法。我一直在看messages.add_message我的看法，用了一个试试。
For example:
例如：
The following error (1062, "Duplicate entry '123321' for key 'PRIMARY'"). Display back to the user friendly message: "Error uploading CSV Duplicate entries"
以下错误(1062, "Duplicate entry '123321' for key 'PRIMARY'")。显示回用户友好的消息："Error uploading CSV Duplicate entries"
Is the the recommended way?
Are there any good tutorials on error handling (i.e. blog posts) that you would recommend as a good approach?
是推荐的方式吗？
是否有任何关于错误处理的好教程（即博客文章）您会推荐作为一种好方法？
采纳答案by arie
Database Exceptionsare documented,
check this answerto see an example of how to use them.
Database Exceptions已记录，请检查此答案以查看如何使用它们的示例。
If you are encountering this error while processing a formyou should probably handle the exception when validating your form. So in case an exception is raised you redisplay the formwith the appropriate error message.
如果您在处理表单时遇到此错误，您可能应该在验证表单时处理异常。因此，如果出现异常，您可以重新显示带有相应错误消息的表单。
