Flask HTTP Methods

In a Client-Server architecture, there is a set of rules, called a protocol, using which, we can allow the clients, to communicate with the server, and, vice-versa. Here, the Hyper Text Transfer Protocol is used, through which, communication is possible. For example, Our browser, passes our query, to the Google server, receiving which, the Google server, returns relevant suggestions. The commonly used HTTP methods, for this interconnection, are – GET and POST.4

Flask – HTTP Method

In this article, we will learn how to handle HTTP methods, such as GET and POST in Flask using Python. Here, we will understand the concept of HTTP, GET, and HTTP POST, and then we will the example and implement each in Flask. Before starting let’s understand the basic terminology:

  • GET: to request data from the server.
  • POST: to submit data to be processed to the server.
  • PUT: A PUT request is used to modify the data on the server. It replaces the entire content at a particular location with data that is passed in the body payload. If there are no resources that match the request, it will generate one.
  • PATCH: PATCH is similar to a PUT request, but the only difference is, it modifies a part of the data. It will only replace the content that you want to update.
  • DELETE: A DELETE request is used to delete the data on the server at a specified location.

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Flask HTTP Methods

In a Client-Server architecture, there is a set of rules, called a protocol, using which, we can allow the clients, to communicate with the server, and, vice-versa. Here, the Hyper Text Transfer Protocol is used, through which, communication is possible. For example, Our browser, passes our query, to the Google server, receiving which, the Google server, returns relevant suggestions. The commonly used HTTP methods, for this interconnection, are – GET and POST.4...

GET Method in Flask

The request we type, in the browser address bar, say: ‘http://google.com’ is called the Uniform Resource Locator.  It mentions the address we are looking for, in this case, the Google landing(starting) page.  The browser, sends a GET request, to the Google server, which returns the starting webpage, in response. The GET request is simply used, to fetch data from the server. It should not be used, to apply changes, to the server data....

POST Method in Flask

Suppose, we need to register our details, to a website, OR, upload our files, we will send data, from our browser(the client) to the desired server. The HTTP method, preferred here, is POST. The data sent, from HTML, is then saved, on the server side, post validation. The POST method should be used, when we need to change/add data,  on the server side....

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