Django: Can I create a QueryDict from a dictionary?

Question

Imagine that I have a dictionary in my Django application:

dict = {'a': 'one', 'b': 'two', } 

Now I want to easily create an urlencoded list of GET parameters from this dictionary. Of course I could loop through the dictionary, urlencode keys and values and then concatenate the string by myself, but there must be an easier way. I would like to use a QueryDict instance. QueryDict is a subclass of dict, so it should be possible somehow.

qdict = QueryDict(dict) # this does not actually work print qdict.urlencode() 

How would I make the second to last line work?

Answer 1

How about?

from django.http import QueryDict  ordinary_dict = {'a': 'one', 'b': 'two', } query_dict = QueryDict('', mutable=True) query_dict.update(ordinary_dict) 

Answer 2

Python has a built in tool for encoding a dictionary (any mapping object) into a query string

params = {'a': 'one', 'b': 'two', }  urllib.urlencode(params)  'a=one&b=two' 

http://docs.python.org/2/library/urllib.html#urllib.urlencode

QueryDict takes a querystring as first param of its contstructor

def __init__(self, query_string, mutable=False, encoding=None):

q = QueryDict('a=1&b=2')

https://github.com/django/django/blob/master/django/http/request.py#L260

Update: in Python3, urlencode has moved to urllib.parse:

from urllib.parse import urlencode  params = {'a': 'one', 'b': 'two', } urlencode(params) 'a=one&b=two'