django MultiValueDictKeyError错误，我该如何处理它 [英] django MultiValueDictKeyError error, how do i deal with it

问题描述

干草，我试图保存一个对象到我的数据库，但它抛出一个MultiValueDictKeyError错误。

问题在于形式，is_private被表示通过一个复选框。如果未选中该复选框，则无效通过。这是错误的地方。

我如何正确处理这个异常，并抓住它？

行是

  is_private = request.POST ['is_private '] 
  

感谢

解决方案

使用MultiValueDict的 get 方法。这也适用于标准类别，如果不存在，则提供默认值的方法。

  is_private = request.POST.get（'is_private'，False）
  

通常，

  my_var = dict.get（< key>，< default>）
  

Hay, I'm trying to save a object to my database, but it's throwing a MultiValueDictKeyError error.

The problems lies within the form, the is_private is represented by a checkbox. If the check box is NOT selected, obvously nothing is passed. This is where the error gets chucked.

How do i properly deal with this exception, and catch it?

The line is

is_private = request.POST['is_private']

Thank

解决方案

Use the MultiValueDict's get method. This is also present on standard dicts and is a way to fetch a value while providing a default if it does not exist.

is_private = request.POST.get('is_private', False)

Generally,

my_var = dict.get(<key>, <default>)

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