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Boilerplate for Nodejs. Handling routing, Rule validation, ORM, Media library, File request handling, Jwt auth, Role & Permissions, Resources, Locale, Mail, Seeder

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Nodemi

Boilerplate backend for nodejs.

Getting Started

  • Clone this repo https or SSH

Clone and move to directory project and run npm install

   git clone [email protected]:Mamena2020/nodemi.git

  • Setup .env
   cp .env.example .env

  • Create database mysql or pgsql

After creating your database, you can fill in the .env file and start your code.

#mysql example

mysql -u root -p
# enter your password

create database mydatabase;

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#pgsql example

createdb -h localhost -p 5432 -U myPgUser mydatabase

Model

Create new model via cli.

   npx nodemi make:model Product

The model will be created in the models directory.


   import { Model, DataTypes } from "sequelize";
   import db from "../core/database/Database.js"

   class Product extends Model {}
   Product.init({
        name: {
          type: DataTypes.STRING,
          allowNull: false
        },
      }, {
        sequelize: db,
        tableName: 'products',
        modelName: 'Product',
        timestamps: true
      }
   );

   export default Product

Automatically registered in the loadModels function in the core/model/Models.js file.


   const loadModels = async () => {

      await Product.sync({
          alter: true, // not recomended on production mode
      })

       ....

Full documentation of ORM

  • Noted

All relationships between models should be defined in the loadModels function. When a model is removed from the models directory, it is important to also remove its corresponding relationship from the loadModels function in the core/model/Models.js file.

Media

Any model can own media by binding the model to the media inside the loadModels function using hasMedia(YourModel).


   const loadModels = async () => {

      await Product.sync({
          alter: true, // not recomended on production mode
      })

      await hasMedia(Product)

  • Save a file

You can save a file using instance.saveMedia(file,mediaName). If the instance already has a file with the same name, then the file will be replaced with a new file.


   const product = await Product.findOne({
       where: {
             id: 1
       }
   })

   await product.saveMedia(req.body.file,"thumbnail")

You can save files to either Local storage or Firebase storage.

To save to Local storage, just set your .env file MEDIA_STORAGE=local , and local storage directory name MEDIA_LOCAL_STORAGE_DIR_NAME=storage.

   MEDIA_STORAGE=local
   MEDIA_LOCAL_STORAGE_DIR_NAME=storage

To save to Firebase storage, first create your Service Account .json on firebase Firebase Console, and download it to your project, then setup the .env file.

   MEDIA_STORAGE=firebase
   MEDIA_FIREBASE_STORAGE_BUCKET=gs://xxxxxx.appspot.com  # your firebase storage bucket
   MEDIA_FIREBASE_SERVICE_ACCOUNT=firebaseServiceAccount.json #  your firebase service account
  • Get media

Get all media by calling instance.getMedia() or instance.getFirstMedia() or you can get media by name instance.getMediaByName(mediaName).


   const product = await Product.findOne({
       where: {
             id: 1
       }
   })

   product.getMedia()                  // return list of object
   product.getMediaByName("thumbnail") // return single object
   product.getFirstMedia()             // return single object
   product.getFirstMedia().url         // return first media url


  • Destroy media

Destroy media by calling instance.destroyMedia(mediaName).


   const product = await Product.findOne({
       where: {
             id: 1
       }
   })

   product.destroyMedia("thumbnail")

  • Noted

All media files will be automatically deleted whenever instance of your model is deleted.

Request

Handling Content-Type header for

  - application/json
  - application/form-data
  - application/x-www-form-urlencoded

Handling all upload files and nested fields.

Validation

Create Request validation via cli.

   npx nodemi make:request ProductRequest

The Request will be created in the requests directory.


   import RequestValidation from "../core/validation/RequestValidation.js"

   class ProductRequest extends RequestValidation {

       constructor(req) {
           super(req).load(this)
       }

       rules() {
           return {

           }
       }
    }

    export default ProductRequest

  • Basic usage.

   const valid = new ProductRequest(req)

   await valid.check()

   if (valid.isError)
      return valid.responseError(res) // or  return res.status(422).json(valid.errors)

  • Example html form.

   <form action="endpoint" method="post" enctype="multipart/form-data">
      <div class="row justify-content-center d-flex">

         <div class="col-md-10">
             <label>Item</label>
             <input type="text" name="name" placeholder="name" />
             <input type="text" name="discount" placeholder="discount" />
             <input type="date" name="expired_date" placeholder="expired date" />
             <input type="file" name="product_image" placeholder="file" />
         </div>
         <div class="col-md-10">
             <label>Item 1</label>
             <input type="text" name="item[0][name]" placeholder="name" />
             <input type="text" name="item[0][description]" placeholder="description" />
             <input type="text" name="price[0]" placeholder="price " />
         </div>
         <div class="col-md-10 mt-5">
             <label>Item 2</label>
             <input type="text" name="item[1][name]" placeholder="name" />
             <input type="text" name="item[1][description]" placeholder="description" />
             <input type="text" name="price[1]" placeholder="price" />
         </div>
          <div class="col-md-10 mt-5">
             <input type="text" name="comments[]" />
             <input type="text" name="comments[]" />
             <input type="text" name="comments[]" />
         </div>
          <div class="col-md-10 mt-5">
             <input type="text" name="seo[title]" value="" placeholder="seo title" />
             <input type="text" name="seo[description][long]" value="" placeholder="seo long desc" />
             <input type="text" name="seo[description][short]" value="" placeholder="seo short desc" />
         </div>


         <div class="col-md-10 my-2 ">
             <button class="float-end btn btn-primary" type="submit">Submit</button>
         </div>

      </div>
   </form>

  • Example rules.

   rules() {
     return {
         "name": {
             "rules": ["required"]
         },
         "discount": {
             "rules": ["required", "float", "min:3", "max:4"]
         },
         "expired_date": {
             "rules": ["required", "date", "date_after:now"]
         },
         "product_image": {
             "rules": ["required", "image", "max_file:1,MB"]
         },
         "item.*.name": {
             "rules": ["required"]
         },
         "item.*.description": {
             "rules": ["required"]
         },
         "price.*": {
             "rules": ["required", "float"]
         },
         "comments.*": {
             "rules": ["required"]
         },
         "seo.title": {
             "rules": ["required"]
         },
         "seo.description.long": {
             "rules": ["required"]
         },
         "seo.description.short": {
             "rules": ["required"]
         }
     }
   }

  • Example error messages

   {
     "errors": {
          "name": [
            "The Name is required"
          ],
          "discount": [
            "The Discount is required",
            "The Discount must be valid format of float",
            "The Discount should be more or equal than 3",
            "The Discount should be less or equal than 4"
          ],
          "expired_date": [
            "The Expired date is required",
            "The Expired date must be valid format of date",
            "The Expired date date must be after the now's date"
          ],
          "product_image": [
            "The Product image is required"
          ],
          "item.0.name": [
            "The Item.0.name is required"
          ],
          "item.1.name": [
            "The Item.1.name is required"
          ],
          "item.0.description": [
            "The Item.0.description is required"
          ],
          "item.1.description": [
            "The Item.1.description is required"
          ],
          "price.0": [
            "The Price.0 is required",
            "The Price.0 must be valid format of float"
          ],
          "price.1": [
            "The Price.1 is required",
            "The Price.1 must be valid format of float"
          ],
          "comments.0": [
            "The Comments.0 is required"
          ],
          "comments.1": [
            "The Comments.1 is required"
          ],
          "comments.2": [
            "The Comments.2 is required"
          ]
          "seo.title": [
            "The Seo.title is required"
          ],
          "seo.description.long": [
            "The Seo.description.long is required"
          ],
          "seo.description.short": [
            "The Seo.description.short is required"
          ]
      }
   }

  • List of rules

    required
    email
    match                 => "match:password"
    exists                => "exists:users,email"  | "exists:users,email,"+super.body.id
    unique                => "unique:users,email"  | "unique:users,email,"+super.body.id
    string
    float
    integer
    max                   => "max:4" -> if string/array its count the length.
    min                   => "min:1" -> if string/array its count the length.
    date
    array
    mimetypes             => "mimetypes:image/webp,image/x-icon,video/mp4"
    mimes                 => "mimes:jpg,png"
    max_file              => "max_file:1,GB" | "max_file:1,MB"  | "max_file:1,KB"  | "max_file:1,Byte"
    image
    date_after            => "date_after:now" | "date_after:birthdate"
    date_after_or_equal   => "date_after_or_equal:now"
    date_before           => "date_before:now"
    date_before_or_equal  => "date_before_or_equal:now"
    bolean
    in_array              => "in_array:1,3,4,1,4,5"
    not_in_array          => "not_in_array:1,3,4,1,4,5"
    ip
    url
    json
    digits                => "digits:4"
    max_digits            => "max_digits:20"
    min_digits            => "min_digits:20"
    digits_between        => "digits_between:5,10"

  • Custom

    Custom validation messages and attribute


    rules() {
     return {
          "name": {
             "rules": ["required"],
             "attribute": "Product name"
          },
          "discount": {
             "rules": ["required", "float", "min:3", "max:4"],
             "messages": {
                 "required": "Need discount",
                 "float": "The data must be numeric"
             },
             "attribute": "DISCOUNT"

         }
    }

  • Noted

Default error messages outputs are dependent on the locale. If you haven't set up the locale as a middleware, it will be set to English en by default.

Role and Permissions

A user model can have a role by binding using hasRole(YourModel) function inside loadModels in core/model/Models.js file.


   const loadModels = async () => {

      await User.sync()

      await hasRole(User)

  • Set users role

If the user instance already has a role, then the user role will be replaced with a new role. instance.setRole(params) params can be role id or name.


   let user = await User.create({
         name: name,
         email: email,
         password: hashPassword
   })

   user.setRole("customer") // role id or name

  • Get role

Get role object by calling instance.getRole(), or direcly access role name instance.getRole().name.


   user.getRole() // role object
   user.getRole().name // role name


  • Get permissions

Get permission by calling instance.getPermissions() will get array of object, or instance.getPermissionsName() will get array of permissions name.


   user.getPermissions()     //  array of permissions object
   user.getPermissionsName() //  array of permissions name [ "user-create","user-stored"]

  • Remove role

   user.removeRole()

  • Check user access

Limitation user access using GateAccess(userInstance,permissionNames), permissionNames must be an array of permission names.


    if (!GateAccess(user, ["user-create","user-stored","user-access"]))
        return res.sendStatus(403) // return forbidden status code

  • Add permissions

   const permissions = [
       "user-create",
       "user-stored",
       "user-edit",
       "user-update",
       "user-delete",
       "user-search"
   ]

    for (let permission of permissions) {
        await Permission.create({ name: permission })
    }

  • Add Role

    const roles = [ "admin","customer" ]

    for (let role of roles) {
        await Role.create({ name: role })
    }

  • Assigning Permissions to Roles

Assign permissions to a role by using roleInstance.assignPermissions(params), params can be a list of permissions name or id.


    const permissions = [
       "user-create",
       "user-stored"
    ]

    let admin = await Role.findOne({ where: { name: "admin" } })

    if (admin) {
        await admin.assignPermissions(permissions)
    }

Resource

Create new resource via cli.

   npx nodemi make:resource UserResource

The Resource will be created in resources directory.


   import Resource from "../core/resource/Resource.js"
   class UserResource extends Resource {
       constructor(req) {
           super(req).load(this)
       }

       toArray(data) {
            return {}
       }
    }

    export default UserResource

  • Basic usage

To create resources from a single object use make or collection for an array of objects.


     let userResource = new UserResource().make(user) // for single object

     let userResources = new UserResource().collection(users) // for array of object

  • Example Resource

user resource


   class UserResource extends Resource {
       constructor(req) {
           super(req).load(this)
       }

       toArray(data) {
           return {
                     "id": data.id,
                     "name": data.name,
                     "email": data.email,
                     "image": data.getMediaByName("avatar")?.url || '',
                     "role": data.getRole()?.name || '',
                     "permissions": new PermissionResource().collection(data.getPermissions() || []),
                 }
       }
    }

permissions resource


   class PermissionResource extends Resource {
       constructor() {
             super().load(this)
         }

         toArray(data) {
             return {
                 "id": data.id,
                 "name": data.name
             }
       }
   }

  • Example usage

   const user = await User.findOne({
       where: {
             id: 1
       }
   })

   let userResource = new UserResource().make(user)

   res.json(userResource)

  • Example result

   {
       "id": 1,
       "name": "Andre",
       "email": "[email protected]",
       "image": "http://localhost:5000/User-1/287d735a-2880-4d4f-9851-5055d1ba1aae.jpg",
       "role": "customer",
       "permissions": [
           {
               "id": 1,
               "name": "user-create"
           },
           {
               "id": 2,
               "name": "user-stored"
           }
       ]
   }

Auth Jwt

  • Create token

Create token by calling JwtAuth.createToken(), that will return refreshToken and accessToken.

   const payload = {
         id: user.id,
         name: user.name,
         email: user.email
     }

   const token = JwtAuth.createToken(payload)

   console.log(token.refreshToken)
   console.log(token.accessToken)


  • Regenerate access token

Regenerate access token by calling JwtAuth.regenerateAccessToken(refreshToken), that will return new access token.


   let accessToken = JwtAuth.regenerateAccessToken(refreshToken)

  • Get Auth user

Get authenticated user by calling JwtAuth.getUser(req), that will get user by refresh token on request cookies.


   const user = await JwtAuth.getUser(req)

Or you just setup the .env AUTH_GET_CURRENT_USER_ON_REQUEST=true and you can access current authenticated user by access req.user.

Before using JwtAuth.GetUser(), ensure that you have set up your User model inside the AuthConfig in the core/config/Auth.js file. It is crucial that your User model has a refresh_token column, as JwtAuth.GetUser() will retrieve the user instance based on the refresh_token by default. However, if you prefer to retrieve the current authenticated user in a different manner, you can modify the JwtAuth.GetUser() function to suit your needs.

   class AuthConfig {

       /**
       * Default user model for auth
       * @returns
       */
       static user = User
  • Middleware auth

For secure access to controller by adding JwtAuthPass to your router.


   routerAuth.use(JwtAuthPass)
   routerAuth.get("/upload", UserController.upload)

   app.use("/api",routerAuth)

Locale

  • Config

Setup locale in core/config/Locale.js. by default locale setup to english en


    defaultLocale: "en",
    useLocale: useLocale,
    locales: ["en", "id"]

You can add more locale Code to locales. By default locales are only available for English en, and for Indonesia id.

  • Default validation error Messages

After adding additional locales, it is important to update the validation error messages in the core/locale/LangValidation.js file, as the messages generated will depend on the selected locale.


   const langValidation = Object.freeze({
       required: {
           en: "The _attribute_ is required",
           id: "_attribute_ wajib di isi",
         //ja: "_attribute_ ........."  -> adding new validation messages for code ja
       },
       email: {
           en: "The _attribute_ must in E-mail format",
           id: "_attribute_ harus dalam format E-mail",
       },
       match: {
           en: "The _attribute_ must be match with _param1_",
           id: "_attribute_ harus sama dengan _param1_"
       },
       ......

  • Use Locale

Its easy to use locale, just setup .env LOCALE_USE=true, then this will effect to all routes, so that have to has a params for locale, for the API router it should be /api/:locale and for the web router it should be /:locale.


   // example for api route
   const routerAuth = express.Router()

   routerAuth.use(JwtAuthPass)
   routerAuth.get("/user", UserController.getUser)
   routerAuth.post("/upload", UserController.upload)s

   app.use("/api/:locale", routerAuth)

   // http://localhost:5000/api/en/endpoint |  http://localhost:5000/api/id/endpoint

If you don't want to set the locale for all routes, only for a particular route, then simply set up the .env as LOCALE_USE=false. Then you can use the LocalePass middleware directly to your route.


   // example for web route
   app.get("/:locale",LocalePass, (req, res) => {

   // http://localhost:5000/en | http://localhost:5000/id


   // example for api route
   app.get("/api/:locale/login",LocalePass, (req, res) => {

   // http://localhost:5000/api/en/login | http://localhost:5000/api/id/login

  • Noted

All routers that using LocalePass will have the locale Code on req, accessible via req.locale.

Mail

Create mail via cli.

   npx nodemi make:mail AccountVerify

The mail will be created in the mails directory, with examplefile.txt and template.ejs


   import Mail from "../../core/mail/Mail.js"

   class AccountVerify extends Mail {
         constructor(from = String, to = [], subject = String) {
             super().load({
                 from: from,
                 to: to,
                 subject: subject,
                 text: "Just need to verify that this is your email address.",
                 attachments: [
                     {
                         filename: "theFile.txt",
                         path: "mails/AccountVerify/examplefile.txt"
                     },
                 ],
                 html: {
                     path: "mails/AccountVerify/template.ejs",
                     data: {
                         title: "Welcome to the party!",
                         message: "Just need to verify that this is your email address."
                     }
                 },
             })
         }
   }

   export default AccountVerify

The template.ejs using express view engine ejs to render html into mail content.

   <!DOCTYPE html>
     <html lang="en">
     <head>
         <meta charset="UTF-8">
         <meta http-equiv="X-UA-Compatible" content="IE=edge">
         <meta name="viewport" content="width=device-width, initial-scale=1.0">
         <title>
             <%= title %>
         </title>
     </head>
     <body>
         <h3>Hello!</h3>
         <p>
             <%= message %>
         </p>
         <p>
             Regards.
         </p>
         <p>
             Nodemi
         </p>
     </body>
   </html>

To use this template.ejs, you need to add an html object with a path and data (if needed) into super().load() method.

   html: {
            path: "mails/AccountVerify/template.ejs", // path is required
            data: // data is optional base on your template.ejs
            {
                title: "Welcome to the party!",
                message: "Just need to verify that this is your email address."
            }
        }
  • Basic usage

To send email by calling instance.send()

   const sendMail = new AccountVerify("[email protected]",["[email protected]"],"Verify Account")

   await sendMail.send()

  • Send file

To send files, you need to add an attachments to super().load(). See full doc.

   attachments: [
                     {
                         filename: "theFile.txt",
                         path: "mails/AccountVerify/examplefile.txt"
                     }
                ]

  • Mail message options

Message options that you can add into super().load().

Name Description Type Required
from The e-mail address of the sender. All e-mail addresses can be plain '[email protected]' string Yes
to Recipients e-mail addresses that will appear on the To array Yes
subject Subject of the e-mail string No
text If you are using HTML for the body of the email, then this text will not be used again string No
html The HTML version of the message object No
attachments An array of objects is used for the purpose of sending files. See full doc array No
cc Recipients e-mail addresses that will appear on the Cc array No
bcc Recipients e-mail addresses that will appear on the Bcc array No
sender E-mail address that will appear on the Sender string No
replyTo An array of e-mail addresses that will appear on the Reply-To array No
alternatives An array of alternative text contents. See full doc array No
encoding optional transfer encoding for the textual parts. string No
  • Noted

Before using mail, make sure you already setup .env file

   MAIL_HOST= #example: smtp.gmail.com | smtp-relay.sendinblue.com
   MAIL_PORT=587
   MAIL_USERNAME=
   MAIL_PASSWORD=

Seeder

  • Running seeder

Running seeder via cli

    npx nodemi seed:run

You can put your seeder code inside seeder function in the core/seeder/Seeder.js file


   const seeder = async () => {

         // put code here..

   }

Cors

The configuration for Cross-Origin Resource Sharing (CORS) can be found in the core/config/Cors.js file.

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Boilerplate for Nodejs. Handling routing, Rule validation, ORM, Media library, File request handling, Jwt auth, Role & Permissions, Resources, Locale, Mail, Seeder

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