Build Modern API Using Nest JS, MongoDB with Unit & E2E Test

Learn to scaffold a NestJS module with a controller and service using the Nest CLI, import it into the app module, and understand module, controller, and provider relationships.

Learn how a NestJS controller handles http requests, implements get, post, put, patch, and delete endpoints, and passes data via url params and query strings using param and query decorators.

Learn to implement post requests with the body decorator in Nestjs, send JSON data, and complete CRUD operations for a restaurant API, including create, get all, and update.

Explore how NestJS controllers delegate work to services via dependency injection, handling post requests with request body and retrieving all restaurants from a service.

Connect a NestJS app to MongoDB using Mongoose, define a restaurant schema, inject the model into the service, and create a record with a database-backed API, returning 201.

Identify what a dto is and how to create a restaurant dto as a class in NestJS, using type-safe fields and preparing for validation with class-validator.

Learn to validate a restaurant DTO in Nestjs using class-validator and class-transformer, decorating fields with isString, isArray, isInt, isEmail, and applying ValidateNested with Type for nested properties.

Learn to use global validation pipes in NestJS, with class-validator and class-transformer, to validate and transform requests and provide clear user friendly messages.

Fetch all restaurant records from MongoDB and return them to the controller. Fetch a single restaurant by ID, validate existence, and throw not found if missing.

Implement delete and update endpoints in NestJS by validating a restaurant id before deleting or updating via the controller and service.

Organize your NestJS api endpoints in Postman collections, create folders, save requests with meaningful names, and share collections with teammates for clear documentation.

Set up swagger UI in nestjs to generate interactive OpenAPI documentation for REST endpoints and expose docs at the docs path.

Extend NestJS Swagger docs with decorators to add endpoint descriptions, custom responses, and example dto schemas, then view and test endpoints directly in the documentation.

Explore how to document NestJS restaurant APIs with Swagger, covering get all restaurants, get by id, delete by id, and update with optional update dto and API param usage.