How do I construct a Django reverse/url using query args?

Question

I have URLs like http://example.com/depict?smiles=CO&width=200&height=200 (and with several other optional arguments)

My urls.py contains:

ur         


        

Answer 1

The answer that used urllib is indeed good, however while it was trying to avoid strings concatenation, it used it in path + '?' + urllib.urlencode(kwargs). I believe this may create issues when the path has already some query parmas.

A modified function would look like:

def url_with_querystring(url, **kwargs):
    url_parts = list(urlparse.urlparse(url))
    query = dict(urlparse.parse_qsl(url_parts[4]))
    query.update(kwargs)
    url_parts[4] = urllib.urlencode(query)
    return urlparse.urlunparse(url_parts)