清理前将数据传入django表单 [英] Modify data incoming to django form before cleaning

问题描述

在清理之前，我需要修改数据到表单。我使它工作，但它看起来很可怕：

I need do modify data incoming to Form before cleaning. I made it work, but It looks awful:

    def __init__(self, *args, **kwargs):
        if len(args) > 0:
            data = args[0]
        elif 'data' in kwargs:
            data = kwargs['data']
        else:
            data = None
        if data is not None:
            data['content'] = ' '.join(data['content'].strip().split())
        super(TagForm, self).__init__(*args, **kwargs)

有没有一些简洁的解决方案？

Is there some laconic solution?

推荐答案

如果 / elif c> / else 容易地到一行：

You can compress the if / elif / else onto one line easily enough:

def __init__(self, *args, **kwargs):
    data = args[0] if args else kwargs.get('data', None)
    if data:
        data['content'] = ' '.join(data['content'].strip().split())
    super(TagForm, self).__init__(*args, **kwargs)

如果args 工作以及如果len（args） > 0 因为 length == 0 项目是 False 和 length > 0 项目是 True 。

if args works as well as if len(args) > 0 because length == 0 items are False and length > 0 items are True.

code>如果数据不是无，则，因为您假定数据至少有一个关键，如果它是不是无无论如何，如果它有一个键，它的 True 。

if data works as well as if data is not None because you're assuming that data has at least one key if it's not None anyway, and if it has a key it's True.

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