format=None 在 Django rest full API 中做什么

Question

Recently when I read Django rest full API document I faced this code:

    def get(self, request, format=None):
    """Return a list of APIView features."""

    an_apiview = [
        'Uses HTTP methods as function (get, post, patch, put, delete).',
        'It is similar to a traditional Django view.',
        'Gives you most control over you logic.',
        'Its mapped manually to URLs.'
    ]

    return Response({'message': 'Hello!', 'an_apiview': an_apiview})

this code is work fine but I look for format=None and I cant find out what does it do. is any body know what is it and why its important to be?

Answer 1

The django rest framework (drf) documentation explains it here .

The gist of it is that when you want to support multiple file types in your response, drf provides a shortcut to support this, but requires you to include 'format' as a keyword argument.

Answer 2

format() is a built-in function in Python that converts a value into the required format. Here format is none indicate so specified format is required allow all.