CRUD operations in NestJS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the necessary decorator for creating a controller in NestJS.

NestJS

import { [1] } from '@nestjs/common';

@Controller('items')
export class ItemsController {}

Drag options to blanks, or click blank then click option'

AController

BInjectable

CModule

DGet

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Injectable instead of @Controller

Importing a decorator not related to controllers

The @Controller decorator is used to define a controller in NestJS.

2fill in blank

medium

Complete the code to define a GET route handler method named 'findAll' in the controller.

NestJS

@Controller('items')
export class ItemsController {
  @[1]()
  findAll() {
    return 'This action returns all items';
  }
}

Drag options to blanks, or click blank then click option'

APost

BDelete

CPut

DGet

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Post instead of @Get

Forgetting the parentheses after the decorator

The @Get() decorator defines a handler for HTTP GET requests.

3fill in blank

hard

Fix the error in the method to accept an 'id' parameter from the URL path.

NestJS

@Get(':id')
findOne(@[1]('id') id: string) {
  return `This action returns item #${id}`;
}

Drag options to blanks, or click blank then click option'

ABody

BParam

CQuery

DHeaders

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Body instead of @Param

Using @Query for path parameters

The @Param('id') decorator extracts the 'id' parameter from the URL path.

4fill in blank

hard

Fill both blanks to create a POST method that accepts a data object from the request body and returns it.

NestJS

@Post()
create(@[1]() createItemDto: any) {
  return [2];
}

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ABody

BcreateItemDto

CRequest

DResponse

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Request instead of @Body

Returning the wrong variable

The @Body() decorator extracts the request body, and returning createItemDto sends back the received data.

5fill in blank

hard

Fill all three blanks to create a DELETE method that accepts an 'id' parameter and returns a confirmation string.

NestJS

@Delete(':id')
remove(@[1]('id') id: string) {
  return `Item with id ${id} has been [2]`;
}

// Use this method in the controller to handle deletion requests.

Drag options to blanks, or click blank then click option'

AParam

Bdeleted

Cremoved

DBody

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Body instead of @Param

Using 'deleted' instead of 'removed' in the message

The @Param('id') decorator extracts the 'id' from the URL, and the string uses 'removed' to confirm deletion.