WEBVTT

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Hi everyone.

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Let's continue with CRUD operation for post controller.

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And we already have a create post, right?

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In this video I will do the get all methods.

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So, getAll right here.

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And what is the get all.

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Firstly, I will remove un-used import statement right here because it's warning me.

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Okay.

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And inside.

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Inside the post service

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Let me create async method from getAll.

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And what's it return? I want to return for me the promise with response DTO.

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Array

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Right.

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Because this is a get all method.

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So in order to do that. Let me show you.

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Right here.

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I will go to the.

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I will getAll post using this.

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postModel

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.find()

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Okay.

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This "find()" method right here will get all of documents.

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And if I console.log.

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Or.

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Actually, I think I'll return directly

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And now you can see this return will be error because I not convert it inside the DTO.

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Right?

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We must convert the real entity into the DTO.

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So.

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Right now I will use the any

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And I will show you how we can convert it later.

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But for now, let's see, why we use that and how it works. Return this.postService

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dot

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getAll

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Okay, go to the postman and I will name to "create post".

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And I will duplicate and change method to get and post right here.

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I will change to get all posts

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Value.

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Okay, let me send, now you can see, if I get all post, we have a __v right here, right?

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I don't want it

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show that

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And for that reason I will use the DTO

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Now let's see how we can map it inside the post.

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DTO, in post right here. I will change the promise.

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ResponseDTO

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Array

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Okay.

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Inside the post I will map it and I will take the "post".

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And right now I will return.

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I will return the post dto.

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Right?

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I will return.

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The _id.

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will be

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post._id, title

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post

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dot

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And description.

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post

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dot

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Description.

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Okay, that's what we want.

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And it's also.

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An error, right?

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The reason because say the "_id" right here is not assignable to type post

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DTO because the post._id right here is not a string.

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If I convert it to string here, it will be work.

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Because this is same shape with the responseDTO here

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You can see, _id, title and description.

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So I can return this in this way okay.

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And in order to add it more explicitly, I will use as ResponsePostDTO

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To make it better, okay.

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You can see, right here.

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And that's it. If I send again, you can see it only have _id, title and description.

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Right.

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But you can see, right now it's very tricky for me to create some other method because we always convert

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it inside the DTO when we respond.

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Right.

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And in the few next video I will show you how to refactor this.

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So I will see you in the next one.