Client Request Form: Fill & Download for Free

When I was beginning as a Django developer, I ran into the same issue. I could program the same basic functionality over and over, and in my case, since I had memorized the steps, I had deluded myself into thinking I was a pretty good programmer. It wasn't until I went to my first interview and struggled to answer a really basic question that the illusion of my understanding broke.The interviewer asked: "How does Django work?" I knew how to edit the URL configuration, I knew how to create views. I could create models and forms and manipulate data returned by each, but I didn't really know how everything worked.Here's how you get better:Understand the basic flow of the web. There is a client and a server. For simplicity, your web browser is the client and your Django app is the server. Your client (browser) sends a request to your server (Django app) and then your server sends a response back to your client. A request always generates a response.Understand the basics of the HTTP protocol. When your client sends a request, it can send some important information with it. It can send a verb such as GET or POST, which tells your server what kind of action you expect it to do. A GET request tells the server "get some information and give it to me". A POST request tells the server "here's some information I'm giving you, please do something with it". The server responds to your client's requests with an HTTP status. It can tell your client "OK, here's the information you requested" (HTTP status 200 OK). It can also respond in other ways: "sorry, I couldn't find what you asked for" (HTTP status 404 NOT FOUND) or "hey, you didn't ask in the right way" (HTTP status 400 BAD REQUEST).Understand the transfer of data via requests and responses. The client can send data in a request and the server can send data in a response. Depending on the HTTP verb (GET or POST), the data is typically sent in different ways. A GET request usually sends data in a query string as part of the URL (e.g. /?search=something). A POST request usually sends data in the body of the request (via a form or an AJAX call). Remember, a GET request is merely asking for information, while a POST request is asking the server to do something with the data. The data needed in a POST request is usually a lot more complicated than the data in a GET request, and therefore it cannot easily fit in a URL.Understand how Django processes the client request. When Django receives a request from the client, it matches the URL to a string in your URL configuration, and then it chooses the correct view to process the request. It also parses the request into a special request object. Django places any data you passed in as part of the request in a special dictionary, depending on what kind of request verb you used. If you used GET, it takes query string parameters and turns them into a dictionary. If you used POST, it processes the data from the request body and turns it into a dictionary. For example, /?search=kittens yields {'search': 'kittens'} and you access that via the request.GET dictionary.Understand how Django processes server responses. Remember, the server returns a response for every request it receives from the client. At the very least, the response will contain an HTTP status. The most basic Django response is the HttpResponse class. Returning HttpResponse() automatically passes an HTTP status 200 OK. Remember, this means "everything went smoothly". You can also pass data in the response, and it must be in string form. If you've seen the render() function, you should understand that behind the scenes it is processing a template into a string and then passing that string into an HttpResponse().What to Do NextPractice generating different types of client requests and server responses. Send AJAX requests using JavaScript. Try different types of form inputs. If you really want to get advanced, try file uploads! Use the built-in HttpRequest classes (e.g. HttpResponseBadRequest, HttpResponseNotFound, etc.) and also try doing things like raising HTTP errors (i.e. raise Http404).Practice sending different types of data in your responses. Remember, everything eventually needs to be a string. Practice using JSON or XML. You'll have to serialize Python data types into strings with special Python modules (e.g. json).After you have mastered the request/response flow, focus your attention on data modeling and what actually happens behind the scenes of the Django models/ORM.Hope this helps!

Well, when you go to a website, you (the client) requests the website from some other computer that stores the website (the server).The server sends a bunch of files to you (maybe HTML files and CSS files)*, including probably some JavaScript files.Then you and the server stop communicating**.So how do you "interact" with the website? Well, for the most part, HTML and CSS provide the layout and design of the website. You can submit forms, click links, etc. But JavaScript lets the website do things like validate forms, create visual effects, etc.Your browser is what interprets all the files that the server sends you, and in large part, JavaScript helps you interact with the website without necessarily needing to communicate with the server***. This is why JavaScript is a client-side scripting language.As far as properties of the language, we call it dynamic and weakly-typed. We don't have to declare what types of variables we create, and the structure of the language lets you manipulate it to act like a procedural or class-based language. Unfortunately, this can make it hard to debug since it doesn't hold your hand.So, that is what JavaScript usually is. But recently people have started using it for the server, just like you'd use PHP, Python, Ruby, etc. JavaScript can program a server in the form of Node.js.This lets you use JavaScript on the client and the server, which helps you streamline things.But wait, there's more.MongoDB is a database system, like MySQL, etc., but you interact with it through the command line using... you guessed it, JavaScript.So, JavaScript is a very dynamic programming language.*This depends on the overall framework of the website**Unless you and the server keep open a persistent connection***Except in the case of AJAX calls, etc.

A2AAny image of a W-9 suffices, so long as the recipient is willing and able to accept it.Back in 2012, I completed a W-9, then signed it and scanned it (slightly askew) to a PDF file. That is the file that I send whenever a client requests a W-9.