Tutorial by Examples

Django makes it really easy to add additional data onto requests for use within the view. For example, we can parse out the subdomain on the request's META and attach it as a separate property on the request by using middleware. class SubdomainMiddleware: def process_request(self, request): ...

First: The path structure If you don't have it you need to create the middleware folder within your app following the structure: yourproject/yourapp/middleware The folder middleware should be placed in the same folder as settings.py, urls, templates... Important: Don't forget to create the ini...

Say you have implemented some logic to detect attempts to modify an object in the database while the client that submitted changes didn't have the latest modifications. If such case happens, you raise a custom exception ConfictError(detailed_message). Now you want to return an HTTP 409 (Confict) st...

Django 1.10 introduced a new middleware style where process_request and process_response are merged together. In this new style, a middleware is a callable that returns another callable. Well, actually the former is a middleware factory and the latter is the actual middleware. The middleware facto...