Decorators-Controller-Express-Lib

Author: https://github.com/kaiquye

Npm: https://www.npmjs.com/package/decorators-controller-express

Install

npm i decorators-controller-express

Start configuration with express

import express from "express";
import { applyDecoratorsControllers } from "decorators-controller-express";
import { UserController } from "./src/modules/controller";

const server = express();
server.use(express.json())

const app = applyDecoratorsControllers(server, [UserController, ProfileController, ...others]);

app.listen(3000, console.log("Bomb Has Been Planted..."))

Example: Simple Controller

Create your Controller

your class must extend from the ControllerBase

// CONTROLLER
import UserDto from "./dto/user-dto.ts";
import { ControllerBase, Post, ValidateBody } from "decorators-controller-express";

@Controller("/v1/user")
class UserController extends ControllerBase {
    
    @Post("/login")
    login(req, res) {
        res.send(req.body);
    }
}

Add Middleware

Global Middleware

Use @GlobalMiddleware decorator to add middleware to your class

your class must extend from the ControllerBase

// CONTROLLER
import UserDto from "./dto/user-dto.ts";
import { ControllerBase, Post, ValidateBody } from "decorators-controller-express";

@Controller("/v1/user")
@GlobalMiddleware([AuthMiddlewareExample])
class UserController extends ControllerBase {
    
    @Post("/login")
    login(req, res) {
        res.send(req.body);
    }
}

Middleware for router

Use @Middleware decorator to add middleware to your route

• Your class must extend from the ControllerBase

// CONTROLLER
import UserDto from "./dto/user-dto.ts";
import { ControllerBase, Post, ValidateBody } from "decorators-controller-express";

@Controller("/v1/user")
class UserController extends ControllerBase {
    
    @Middleware(VerifyStoreMiddlewareExample)
    @Post("/login")
    login(req, res) {
        res.send(req.body);
    }
}

Validate request Body

class-validator

npm i class-validator

Create your dto

your class must extend from the base DtoBase

// DTO BODY
import { IsEmail, IsString } from "class-validator";
import { DtoBase } from "decorators-controller-express";
export class UserDto extends DtoBase {
    @IsEmail()
    email: string;
    @IsString()
    password: string;
    
    constructor({ email, password }) {
        super();
        this.email = email;
        this.password = password;
    }
}

Create your Controller

you must call the @ValidateBody() decorator and pass your DTO as a parameter

• your class must extend from the ControllerBase

// CONTROLLER
import UserDto from "./dto/user-dto.ts";
import { ControllerBase, Post, ValidateBody } from "decorators-controller-express";

@Controller("/v1/user")
class UserController extends ControllerBase {
    
    @ValidateBody(UserDto)
    @ValidateParam(searchDto)
    @Post("/login")
    login(req, res) {
        res.send(req.body);
    }
}

Validate request Params

Create your Controller

you must call the @ValidateParam() decorator and pass your DTO as a parameter

• your class must extend from the ControllerBase

// CONTROLLER
import UserDto from "./dto/user-dto.ts";
import { ControllerBase, Post, ValidateBody } from "decorators-controller-express";

@Controller("/v1/user")
class UserController extends ControllerBase {
    
    @ValidateParam(UserDto)
    @Get("/:user_id")
    login(req, res) {
        res.send(req.body);
    }
}

Validate request Query

Create your Controller

you must call the @ValidateQuery() decorator and pass your DTO as a parameter

• your class must extend from the ControllerBase

// CONTROLLER
import UserDto from "./dto/user-dto.ts";
import { ControllerBase, Post, ValidateBody } from "decorators-controller-express";

@Controller("/v1/user")
class UserController extends ControllerBase {
    
    @ValidateQuery(UserDto)
    @Get("/")
    findAll(req, res) {
        res.send(req.body);
    }
}