WEBVTT

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In the previous video, I already showed you how to connect with the MongoDB, and in this video,

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let's create the some schema.

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Or we can go and create a document collection inside the MongoDB database.

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Now let's show you how we can do that.

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Firstly, we will define the folder called schema and we will create a schema like this.

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In this example you will cat.schema.

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.ts

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So I will show you how we can do similar like that in the post.

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Over here I will create a new folder called schemas.

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Sorry schemas inside schemas for I will create a post.schema.ts

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Okay that the first one

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And in order to create the schema, because we use the ORM or we can call ORD

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right

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So for that reason we will write the object object relational mapping.

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We will mapping from a class into the real database.

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And for that reason we will create a class to representation of the document.

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So firstly, we will define a class and use the @Schema.

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To make it will be the schema of the database.

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And we use the prop property right here.

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So this will be the column, right.

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And now instead of

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try to understand anything right here.

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I will copy

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paste and see what is the result.

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Okay, let me copy everything, and paste it and firstly I will replace.

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Firstly, I will

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I will change the name.

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Okay.

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From the cat schema and cat document into the post document.

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Okay, Post.

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Document.

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Post

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Here and now.

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You don't need to worry about what is inside here.

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What is HydratedDocument ?

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Okay.

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You don't need to

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You don't need to know.

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All the that, this is not important.

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The important is make the code working.

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This will be good with the post.

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I need, I need the title.

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And with the that title, we need the string.

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Right?

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And the description will be string also.

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And I will remove everything right here.

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Okay.

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That's for schema.

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And now let me open the terminal a little bit right here.

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And I will scroll down a little bit.

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We can see, with prop.

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We can mark this with data type like this.

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Or we can use the validation I will show you how to validation later.

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Don't worry that for now we can reference this with different.

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Document different collection.

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Now we scroll down a little bit.

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Right here.

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The code right here is what we use inside the Express.js framework, right?

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With the Expressjs Framework, we use something like this.

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But with NestJS, we will prefer the class approach.

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Way

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And now, let's go to the module and import the MongooseModule.forFeature and define something like

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the name of the database and the schema.

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Let me show you how we can do that. Inside the post module right here.

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I will copy okay and never remember the code over here.

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I will copy until the array right here and inside the import.

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We don't have import here, right?

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Import.

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And instead of import from the Cat I will use Post.

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Right.

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Oh, sorry.

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The Post is not from "nestjs/common"

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The Post comes from the schema.

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The schema.

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And I will import the PostSchema.

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Now.

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And make sure you a comma.

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It's a little bit.

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And the post right here.

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It will be the class, right?

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And the schema here is in the schema.

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We already export right here.

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And because this schema right here belongs to the post module.

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So we will import this inside the post module.

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And that's it, let me go to the MongoDB.

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And click inside the cluster.

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And click on the browse collection.

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Inside the collection right here.

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Now, you can see we have a database and a posts right here.

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Right.

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The database name's default will be "test" because we don't name for it.

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If I go to the app.module, I will name for it, for example like post_db

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Okay.

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And I will drop the test, type "test" to the drop all of that

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And if I close the project and run it again let's see what happened.

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Okay.

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Now we already have a post_db and the posts collection, right?

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Very cool

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And that for the video.

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And let me summarize.

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In this video, we already understand how we can create a collection and some documentation.

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We will work with documentation later.

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Okay, we use the schema and prop to define the property and schema for defined collection, and we

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will export that.

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But you don't need to worry about what is the document or the schema factory or .createForClass

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We don't need to know all that.

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Okay, this is not important.

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In later we can use the post document right here for example like the data type.

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But I will work with that later.

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Don't worry for now.

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So that's it for the video.

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I will see you in the next one.