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Nest.js: A Progressive Node.js Framework

You're reading from   Nest.js: A Progressive Node.js Framework Hit the ground running with Nest.js

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Product type Paperback
Published in Nov 2019
Publisher Packt
ISBN-13 9781800204737
Length 317 pages
Edition 1st Edition
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Authors (6):
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Greg Magolan Greg Magolan
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Greg Magolan
Patrick Housley Patrick Housley
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Patrick Housley
Backstop Media LLC Backstop Media LLC
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Backstop Media LLC
Adrien de Peretti Adrien de Peretti
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Adrien de Peretti
Jay Bell Jay Bell
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Jay Bell
David Guijarro David Guijarro
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David Guijarro
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Toc

Table of Contents (16) Chapters Close

Preface
1. Introduction FREE CHAPTER 2. Overview 3. Nest.js authentication 4. Dependency Injection system of Nest.js 5. TypeORM 6. Sequelize 7. Mongoose 8. Web sockets 9. Microservices 10. Routing and request handling in Nest.js 11. OpenAPI (Swagger) Specification 12. Command Query Responsibility Separation (CQRS) 13. Architecture 14. Testing 15. Server-side Rendering with Angular Universal

Request handlers

A basic GET request handler for the /entries route registered in the EntryController could look like this:

import { Controller, Get } from '@nestjs/common';

@Controller('entries')
export class EntryController {
    @Get()
    index(): Entry[] {
        const entries: Entry[] = this.entriesService.findAll();
        return entries;
    }

The @Controller('entries') decorator tells Nest.js to add an entries prefix to all routes registered in the class. This prefix is optional. An equivalent way to setup this route would be as follows:

import { Controller, Get } from '@nestjs/common';

@Controller()
export class EntryController {
    @Get('entries')
    index(): Entry[] {
        const entries: Entry[] = this.entriesService.findAll();
        return entries;
    }

Here, we don’t specify a prefix in the @Controller() decorator, but instead use the full route path in the @Get('entries') decorator.

In both...

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