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Hello, friends, in this video, we shall discuss the different HTP matters and how they are used along

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with the flask application.

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AWB stands for hypertext transfer protocol.

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This is an application protocol and it is used for distributing Calavera to hypermedia information systems.

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HDB is the foundation of all the data communication activities in the W w w are World Wide Web hypertext

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is a structured text that uses the logical links between the nodes that are containing the text.

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This protocol is to exchange or transfer the hypertext.

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Its name itself suggests that it is used to exchange or transfer the hypertext.

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There's a difference between the text and hypertext.

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SCDP defines the methods to indicate the desired action to be performed on whatever resource is to be

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communicated, to be used for communication resource.

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Maybe this is maybe a file or a resource maybe and the output of some executable program.

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So any such resource may be exchanged between one node to the other node and that exchange or transfer

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is controlled by this EDP to begin with, HDB 1.0 was the specification that was defined and in which

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it started with two methods get and post, let alone the revision of HTP specifications.

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But it should be one point, one error, some additional methods like put, delete, trace and connect.

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So all in all, there should be 1.0 provided to the most two most popular HGP methods plus get and post.

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But then the other matters are also prevalent.

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Let us see the use and the definitions of all these methods, one by one.

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As I said, the gate and the Post are the two most commonly used CETP methods of which gate is the default

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method?

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It is, it sends the data in the plane unencrypted manner most.

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As I say, it is the most commonly used method.

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Post method is another commonly used method, which was in fact the one of the earliest methods that

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were defined.

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It is used to send the original data to the server, especially if you have a stable form and the form

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that has to be submitted to the server, then it is packaged inside a post request.

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It is used to send the e-mail form letter to the server, the data server data that is, that the server

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receives by the post method is not gatecrashed by the server.

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Unlike the gate method where the server remembers the data that was earlier received by the post, data

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is not retained by the server.

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That is another advantage of that.

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Using the post with the additional methods that were introduced in HDB.

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One point one include a header method.

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It is more or less the same as get, but it doesn't have the response body.

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So which means what if the server receives the request by the method?

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It doesn't have to send the response.

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Only the header part of the EDP is received from the client.

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But the method is again a very useful variation.

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It replaces all the current representations of the target resource.

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So which means what if the request for the particular resource is already received before and a subsequent

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put method will replace the earlier request?

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Current representation will be replaced by the request that has been set.

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So that is put.

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Delete it, remove the current representation of the target was the requested target will be deleted.

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It will be processed and deleted.

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Press equals the received request so that the client can see any changes or additions have been done

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in the request or not and cannot convert the request connection to a transparent DCP Turnell, especially

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useful for the SSL encrypted communication.

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So these are the different methods of which we shall use the get that post method.

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So here the rule of rather the rule decorator, which defines a you all can be given an additional parameter,

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the rule function of the application object can be given an additional parameter Collette's methods

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by default.

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The method is always good, but you can change the preference by giving additional methods.

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So, for example, you see here, Eppy, not root the you are and that is defined as less function it

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can have do in front of the methods attribute.

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I'm giving a list object in which these two methods first and get are used.

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So the default is good, but then it can also be a positive method.

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So insert the definition of the function.

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You are identifying whether the request has been received as or get so how that can be done by using

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the requested documents.

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So obviously your

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import statement must have, in addition to the last class, you should also import request object.

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So the request object has a method or a function method and its value will be whichever method had been

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used by the client.

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If it is equal to post, then this block will be executed.

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Right.

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And if it is not POS, then which means what?

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You are given two options.

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So if it is equal to post, then this block, otherwise this block, that means this will be executer

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when the method is get.

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So that is how you can segregate the two activities of sending a request, either get method or method

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that business logic of processing the data, processing the function of the view function.

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This to be done when the method is both the part of it and when the matter is get so such a use of get

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and post methods will.

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Now I will show you with the help of an example in which first I will show you how the postmortem is

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used and also get the method used with the help of a demonstration example in front of you in order

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to study the different HTP methods in the flask environment.

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Let us first create an HTML form.

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In which there is a input type equal to text, text, if there was name of the full list and and then

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there is a submit button.

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So if you click on the submit button, the form data is going to be sent to this wall, which is mentioned

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in the action attribute of the form.

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And it is localhost 5000 login.

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So this is the you are.

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To which the data is going to be said and to begin with, we shall put the metal attribute of the form

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equal to post.

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So this is a simple e-mail form that we have created.

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And now this is the Python script in which this log in Eurail is defined and it is bound with the view

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function called Log-in.

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By default, this route decorator method.

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You know, accepts the data from the brother in the get method, but you can alter their behavior by

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mentioning the value to these methods parameter which can be provided to the root method.

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So metallurgic, although there are two possible values are given in the list.

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Which is the value of these methods parameter.

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So we have written a stable form which sends the letter in the post midterm.

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So if it is equal to the post, the request does not matter the value of the request or method attribute

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of this request object, then what will happen with the data associated with the barometer of the form

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will be stored in the variable called user and.

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The browser will be redirected towards the associated Eurail with the function called Wellcome, which

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is already defined here.

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We have a function called as welcome, welcome, the variable part.

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So if it.

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If the farm sells, let us anvil as the name, as a value associated with the request, not form animal,

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so user will be Annville.

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So this will come rule and associated.

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View function welcome will receive Namir, the output will be welcome.

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Whatever name that he will be providing, this will happen when.

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The data is sent in the post ometer.

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If it is not, send in the post method, otherwise it should be get because there is a second option

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is get.

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So the value associated with the enum attribute of the form can be fetched by using trick with dart.

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Energy is not get.

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So the.

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Entry in the textfield will be stored in the variable called user, and the same function will be will

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again be called in, the output of the output of both cases will be the same will come will, for instance,

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if the text box in the next e-mail form is entered with Envir.

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But in the first place, what happens when?

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The farm uses.

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Post metal attribute or get better that we have to see.

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So this is the explanation to this Log-in view function.

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Now, what we will do, we will open that e-mail form as it is, we have seen that the metrological

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the post is used, so we expect this function to be executed.

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Output will be welcome, and we'll.

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And then we will change the.

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Metal attribute of the form from push to get, and we will see that this will be executed.

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So let us now open the browser first.

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Open the.

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Esteemable form and CDG, see how the redirection takes place with the help of the you are all for function.

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So this is the former chairman that we are open inside the textbooks, let me.

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Enter the data, if I press this button, the form data will now be redirected towards the localhost

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5000 log in using the post emitter.

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So therefore.

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The associated review function to the in you are in will identify that the metal is post and therefore

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the data will be redirected towards the you are associated with a welcome name is called the Envir.

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So first, we have to start the server.

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And then press the submit button.

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So the name of the script is Start with.

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I will start the server now.

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And then.

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Press on the submit button.

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It was showing you welcome the.

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That is what is to be expected.

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Now, change the method attribute to.

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Get from post.

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And open the Australian farm again.

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So the same is form is in front of you.

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Will enter the data again and the reason we're running, so I'll press on this button.

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That is the.

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Brother is redirected towards the welcome and will you all see what is being displayed, but now this

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time the get method is in use, so that is all his people can get get methods can be used to.

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Send the data to the associated you are a.