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In this video.

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Let's go ahead and finish up the MVC design pattern to have clean folder structure.

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So looking at the route here at this point, I think everything is okay because we have what is called

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separation of concern.

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But to be able to finish up with the MVC design part in the purpose for the routing is to take a function

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and then just render that.

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So we need to catch the logic inside this route.

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So for this route, where is our business logic?

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This is the entire route.

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The business logic lies inside the callback, which is this one.

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So we need to catch this one and put it on a separate file called controller.

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The responsibility of a controller is where we implement the business logic.

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So let's go ahead and then refactor the code inside the root so inside the controllers.

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And let's start with the users and let me create one file and our code is one as users dot JS And let's

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come back to the root.

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So let me get back to the users root here and this is a callback function, so I'm going to cut the

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callback function inside here as that and come back to the controller and I'll paste it as that.

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This is a valid function and this is what we call anonymous function, meaning a function without a

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name.

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So what we need to do is to assign a variable to this, or we can make use of normal function creation.

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But I would like to use a function.

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So this one going to be as a registered user controller or registered controller equal to that, and

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that is it.

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The next step is that I need to require that one inside the root.

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So I need to export down here as module dot exports is equal to remember this file is going to contain

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all the logic about the users, meaning we are going to export multiple functions from this file.

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So we need to export them as an object as register controller.

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So in here I need to require the registered user controller and our pass to this one as a second element

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and that is it.

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So when I go ahead and then make a request to register, you can see that it worked fine.

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So let's finish up the refactoring.

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So back here I'm going to cut all the callback function and inside here I'm going to paste it here.

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So it's not going to be as log in.

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And this one is registered.

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It's supposed to be here before the export.

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So I need to assign to a variable called log in const log in controller is equal to that.

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All right, so let me collapse the finished one and let me export us log in controller.

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And here, let's require it as log in.

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Sorry as log in and here as log in.

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The next one is for the getting details about the user.

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So here I'm going to be as details so PC eight.

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And I signed to a variable called user details.

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Controller is equal to that.

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So let's export it as that and here require it as that.

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And for details, I'll start next one going to be the profile.

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So let me select and cut and here, let me collapse this one also.

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And this one is going to be the profile piece, its end cost profile controller.

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Is equal to that exports.

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Required.

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And use it.

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Next is.

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Upload profile photo.

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So select and cut.

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Going to be upload profile photo.

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Pace eight.

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In concert upload profile.

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Photo controller.

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Wow.

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It's too long, but it's okay.

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So down here.

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Less exports and less required.

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And here, let's use it.

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The next age upload cover, photo it from here and let me collapse here as upload cover image and then

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cost.

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Upload cover image.

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Controller is equal to the function code.

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And exports.

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And here.

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Let's use it.

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The next one is I need to use it here.

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And the next one is update password.

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So here is going to be update password and const.

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Our date password.

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Controller is equal to that.

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And let's use it here as update.

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Next one is going to be the update the user.

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So let's come back here and want to be an update user and I'm going to be const update user is equal

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to the function.

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Going to be controller.

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So let's export it here and let's use it here.

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And let's use it also here.

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The last one is going to be look out.

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Cost.

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Look out.

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Controller is equal to that.

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Let me collapse.

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It's.

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Look out.

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And here I look out and let's use it here.

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All right, So let's try it out and make the request to make sure that it works fine.

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All right.

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So let's work with the post controller also.

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So let me collapse this one.

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And inside the post I'm going to create one file and call it as post.

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Jeez.

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Let's get back to the post route.

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Which is this?

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And as we did.

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Cut it from here and post const create post controller is equal to the function call.

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So here are going to be as great.

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And down here exports module dot exports is equal to create post controller collapse AIDS.

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And next step is.

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Fetching all posts.

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So here is going to be all and cost.

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Fetch post.

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Post prowler.

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Is equal to the function call and let's export us an object to here.

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Can it be as fetch post?

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And for single.

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Cut it from here.

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And details the contest fetch posts.

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Single post controller is equal to that.

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Let me add controller for the function on.

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All right.

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The next A's delete.

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Delete content.

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Delete posts.

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Controller

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is equal to that.

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And lastly is about the update.

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And let's export it here.

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As update.

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So let's require out the controllers create.

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So here are going to be as great.

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Delete.

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Fetch.

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Single update.

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So this one is for fetch.

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Post and fetch single post.

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And delete posts and update posts.

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So let's test it out and see if it works.

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So great is fine or also fine details is also fine.

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Have to rename this one to details.

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Well, spelling mistake and delete is fine.

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Updates is also fine.

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The last step is for the comment.

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So let me collapse all and insert here.

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I'm going to create a file called Comments dot touches and inside the root of comment.

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Let's start with that.

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So let me cut this one from here.

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And inside here is going to be a great comment.

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Second, great

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comment.

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Controller is equal to that.

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And then.

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Fine single comment.

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Cost comment details controller is equal to that.

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And next is the lead.

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Konst deletes comments.

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Controller.

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Is equal to that.

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And lastly is for update.

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Costs.

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Update.

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Comments.

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Controller is equal to that.

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So let's export the module.

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You're going to be as great.

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Comment details.

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Delete.

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Update.

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And that is it for now.

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So let's come here and then require great comment.

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Comment, details, delete and update.

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So here is going to be great comment and this is comment details and this is the lead comment and this

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one is update comment.

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So now we have complete MVC design pattern.

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What has left is to fill up the actual logic for our application.

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Then this video, let's start with user registration.