{"id":1399,"date":"2022-04-18T18:09:02","date_gmt":"2022-04-18T18:09:02","guid":{"rendered":"https:\/\/zerotobyte.com\/?p=1399"},"modified":"2022-04-18T18:09:03","modified_gmt":"2022-04-18T18:09:03","slug":"http-response-django-explained-with-examples","status":"publish","type":"post","link":"https:\/\/zerotobyte.com\/http-response-django-explained-with-examples\/","title":{"rendered":"HttpResponse Django – HTTP Response Explained with Examples"},"content":{"rendered":"\n

Django is a web application framework which means it is heavily used in scenarios that include receiving and sending HTTP requests. That is one of the main functionalities Django gives us. We\u2019ll see how to define and return the HTTP response using the HttpResponse Django class<\/strong> in this post. You can also find a few helpful examples at the end of this post.<\/p>\n\n\n\n

For those who only want the syntax of returning the HttpResponse<\/code>, you can use the following snippet.<\/p>\n\n\n\n

from django.http import HttpResponse\n\ndef http_response_view(request):\n    content = '<p>dummy content<\/p>'\n    return HttpResponse(content)<\/pre>\n\n\n\n
Django Request-Response Cycle<\/h2>\n\n\n\n
Before explaining what is and how to return a HTTP response in Django, let\u2019s first recall how the request-response cycle looks like in Django. The standard request-response cycle involves the following steps:<\/p>\n\n\n\n
  1. A client sends the HTTP request.<\/li>
  2. Request is processed by request middlewares.<\/li>
  3. Request is passed to the URL Router.<\/li>
  4. View function accepts the request.<\/li>
  5. View function forwards the request data to the business layer.<\/li>
  6. View function defines the HTTP response and sends it back.<\/strong><\/li>
  7. Response is processed by context processors and template renderers.<\/li>
  8. The response is processed by response middlewares.<\/li>
  9. Client gets the HTTP response.<\/li><\/ol>\n\n\n\n
    The simplified Django request-response cycle is also shown in the image below.<\/p>\n\n\n\n
    \"Http<\/figure>\n\n\n\n
    In the example above, we are particularly interested in step 6, in which we define and return an HTTP response. For this, we will want to use Django\u2019s HttpResponse<\/code> class.<\/p>\n\n\n\n
    How to send the HTTP response? – Django HttpResponse Explained<\/h2>\n\n\n\n
    As we mentioned earlier, a Django view takes a web request and returns a web response. After the request is captured, Django creates an HttpRequest<\/code> object with associated metadata that is then processed by middlewares and backend logic.<\/strong> After processing the request, the server needs to return a response to the client. The response can be anything: HTML, JSON, binary data, error, etc.<\/p>\n\n\n\n
    Django\u2019s HttpResponse<\/code> class is used to define an HTTP response. It comes from the django.http<\/code> module, and it contains a set of predefined <\/strong>attributes<\/strong><\/a> and <\/strong>methods<\/strong><\/a> you can use to return the appropriate response to the client.<\/strong> You will usually use this class inside a view function, for example, in views.py<\/code>. <\/p>\n\n\n\n
    To successfully send the HttpResponse<\/code> object to the client, you must import it from the django.http<\/code> module and return it from the view function. Below you can see how the HttpResponse<\/code> constructor looks like:<\/p>\n\n\n\n
    HttpResponse(content=b'', content_type=None, status=200, reason=None, charset=None, headers=None)<\/pre>\n\n\n\n