How to Retrieve String, Array, and Dictionary Data from Django GET Requests

Background

While working on a testing toolbox, a front‑back data interaction issue was encountered, prompting this整理.

Environment

OS: Mac OS X EI Caption Python: 2.7 IDE: PyCharm Django: 1.8.2

Note: The examples use the GET method, but POST works similarly.

String data

Front‑end passes a parameter (illustrated below). In Django you can retrieve it with: exporttype = request.GET.get("exporttype") Note: In Python 2.7 the data is a unicode string; you may need to convert it with str() before use.

Result example:

Array data

Using the string‑retrieval method returns None. Retrieve an array with: bugids = request.GET.getlist("bugids[]") The returned elements are unicode and may need encoding conversion.

Example request URL and result:

Dictionary data

Treat it as a string and parse with the json module. Front‑end sends JSON string, e.g.: "test": JSON.stringify({"test": "test"}) Result example:

Related source code

GET

method is defined in WSGI and returns http.QueryDict(raw_query_string, encoding=self._encoding). QueryDict inherits from MultiValueDict, so you can inspect MultiValueDict directly. getlist merges the data and returns the list.