python - 我可以让 Django QueryDict 保留顺序吗？

Question

是否可以让 Django 的 QueryDict 保留原始查询字符串的顺序？

>>> from django.http import QueryDict
>>> q = QueryDict(u'x=foo³&y=bar(potato),z=hello world')
>>> q.urlencode(safe='()')
u'y=bar(potato)%2Cz%3Dhello%20world&x=foo%C2%B3'

Answer 1

QueryDict继承自 Django 的 MultiValueDict它继承自 dict 即 implemented as a hash table .因此，您不能保证它会保持有序。

我不确定这是否与您的需求相关，但是 an ordering that QueryDict does preserve is the order of "lists" (multiple values for the same key) passed in to them .使用它，您可以:

>>> from django.http import QueryDict
>>> q = QueryDict(u'x=foo³&x=bar(potato),x=hello world')
>>> q.lists()
[('x', ['foo³', 'bar(potato)', 'hello world'])]
>>> q.urlencode(safe='()')
u'x=foo%C2%B3&x=bar(potato)&x=hello%20world'